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Nelson J, Goldman AM. Thin film cryogenic thermometers defined with optical lithography for thermomagnetic measurements on films. Rev Sci Instrum 2015; 86:053902. [PMID: 26026531 DOI: 10.1063/1.4919734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Resistance thermometers are common secondary thermometers in cryogenic applications. Bulk RuO2 thermometers are used in dilution refrigerators because of their low magnetoresistances in addition to their temperature sensitivity. Thermoelectric and thermomagnetic measurements require multiple thermometers to measure temperature differences. Here, we present a method to fabricate thin film RuO2 thermometers directly onto an experimental substrate. This enhances thermal contact between thermometers and films whose thermoelectric or thermomagnetic properties may be measured. Commercial thermometers have higher temperature sensitivities than the thermometers presented in this study, but commercial thermometers must be carefully heat sunk to the cryostat or sample to be useful. Thin film thermometers can be patterned with ultraviolet (UV) lithography. This allows both the size of the thermometer and its distance from the sample, when also patterned with UV lithography, to be on the order of micrometers. A universal calibration curve for these thin film thermometers has not been produced. The efficacy of these thermometers has been demonstrated through measurements of the Nernst effect in Nb. In this study, the thin film thermometers were calibrated using the cryostat thermometers.
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Affiliation(s)
- J Nelson
- School of Physics and Astronomy, University of Minnesota, 116 Church Street SE, Minneapolis, Minnesota 55455, USA
| | - A M Goldman
- School of Physics and Astronomy, University of Minnesota, 116 Church Street SE, Minneapolis, Minnesota 55455, USA
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Klassen TL, Bomben VC, Patel A, Drabek J, Chen TT, Gu W, Zhang F, Chapman K, Lupski JR, Noebels JL, Goldman AM. High-resolution molecular genomic autopsy reveals complex sudden unexpected death in epilepsy risk profile. Epilepsia 2013; 55:e6-12. [PMID: 24372310 DOI: 10.1111/epi.12489] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/22/2013] [Indexed: 12/29/2022]
Abstract
Advanced variant detection in genes underlying risk of sudden unexpected death in epilepsy (SUDEP) can uncover extensive epistatic complexity and improve diagnostic accuracy of epilepsy-related mortality. However, the sensitivity and clinical utility of diagnostic panels based solely on established cardiac arrhythmia genes in the molecular autopsy of SUDEP is unknown. We applied the established clinical diagnostic panels, followed by sequencing and a high density copy number variant (CNV) detection array of an additional 253 related ion channel subunit genes to analyze the overall genomic variation in a SUDEP of the 3-year-old proband with severe myoclonic epilepsy of infancy (SMEI). We uncovered complex combinations of single nucleotide polymorphisms and CNVs in genes expressed in both neurocardiac and respiratory control pathways, including SCN1A, KCNA1, RYR3, and HTR2C. Our findings demonstrate the importance of comprehensive high-resolution variant analysis in the assessment of personally relevant SUDEP risk. In this case, the combination of de novo single nucleotide polymorphisms (SNPs) and CNVs in the SCN1A and KCNA1 genes, respectively, is suspected to be the principal risk factor for both epilepsy and premature death. However, consideration of the overall biologically relevant variant complexity with its extensive functional epistatic interactions reveals potential personal risk more accurately.
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Affiliation(s)
- Tara L Klassen
- Faculty of Pharmaceutical Sciences, The University of British Columbia, Vancouver, British Columbia, Canada
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Lin YH, Nelson J, Goldman AM. Suppression of the Berezinskii-Kosterlitz-Thouless transition in 2D superconductors by macroscopic quantum tunneling. Phys Rev Lett 2012; 109:017002. [PMID: 23031125 DOI: 10.1103/physrevlett.109.017002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2011] [Indexed: 06/01/2023]
Abstract
The evolution with thickness of the properties of quench-deposited homogeneous amorphous bismuth (a-Bi) thin films with a 14.67 Å amorphous antimony (a-Sb) underlayer has been studied. In contrast with the results of previous investigations on similar systems the transition between the insulating and superconducting regimes is not direct, but involves an intervening metallic regime over a range of thicknesses. For these metallic films the temperature dependencies of the resistances at temperatures above the metallic regime can be described by the Halperin-Nelson form suggesting the occurrence of a Berezinskii-Kosterlitz-Thouless (BKT) transition at lower temperatures. However, this transition never occurs as curves of R(T) flatten out as temperature is reduced. We suggest that this phenomenon is evidence of a crossover between a classical regime of thermal vortex unbinding at high temperatures and a regime of macroscopic quantum tunneling at low temperatures. The latter prevents the BKT transition from occurring.
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Affiliation(s)
- Yen-Hsiang Lin
- School of Physics and Astronomy, University of Minnesota, 116 Church Street SE, Minneapolis, Minnesota 55455, USA
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4
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Leng X, Garcia-Barriocanal J, Yang B, Lee Y, Kinney J, Goldman AM. Indications of an electronic phase transition in two-dimensional superconducting YBa2Cu3O(7-x) thin films induced by electrostatic doping. Phys Rev Lett 2012; 108:067004. [PMID: 22401113 DOI: 10.1103/physrevlett.108.067004] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2011] [Indexed: 05/31/2023]
Abstract
We successfully tuned an underdoped ultrathin YBa2Cu3O(7-x) film into the overdoped regime by means of electrostatic doping using an ionic liquid as a dielectric material. This process proved to be reversible. Transport measurements showed a series of anomalous features compared to chemically doped bulk samples and a different two-step doping mechanism for electrostatic doping was revealed. The normal resistance increased with carrier concentration on the overdoped side and the high temperature (180 K) Hall number peaked at a doping level of p∼0.15. These anomalous behaviors suggest that there is an electronic phase transition in the Fermi surface around the optimal doping level.
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Affiliation(s)
- Xiang Leng
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
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5
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Leng X, Garcia-Barriocanal J, Bose S, Lee Y, Goldman AM. Electrostatic control of the evolution from a superconducting phase to an insulating phase in ultrathin YBa₂Cu₃O(7-x) films. Phys Rev Lett 2011; 107:027001. [PMID: 21797633 DOI: 10.1103/physrevlett.107.027001] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2011] [Indexed: 05/31/2023]
Abstract
The electrical transport properties of ultrathin YBa₂Cu₃O(7-x) films have been modified using an electric double layer transistor configuration employing an ionic liquid. A clear evolution from superconductor to insulator was observed in nominally 7 unit-cell-thick films. Using a finite size scaling analysis, curves of resistance versus temperature, R(T), over the temperature range from 6 to 22 K were found to collapse onto a single scaling function, which suggests the presence of a quantum critical point. However, the scaling fails at the lowest temperatures indicating the possible presence of an additional phase between the superconducting and insulating regimes.
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Affiliation(s)
- Xiang Leng
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
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Lee Y, Clement C, Hellerstedt J, Kinney J, Kinnischtzke L, Leng X, Snyder SD, Goldman AM. Phase diagram of electrostatically doped SrTiO3. Phys Rev Lett 2011; 106:136809. [PMID: 21517412 DOI: 10.1103/physrevlett.106.136809] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2010] [Indexed: 05/30/2023]
Abstract
Electric double layer transistor configurations have been employed to electrostatically dope single crystals of insulating SrTiO(3). Here we report on the results of such doping over broad ranges of temperature and carrier concentration employing an ionic liquid as the gate dielectric. The surprising results are, with increasing carrier concentration, an apparent carrier-density dependent conductor-insulator transition, a regime of the anomalous Hall effect, suggesting magnetic ordering, and finally the appearance of superconductivity. The possible appearance of magnetic order near the boundary between the insulating and superconducting regimes is reminiscent of effects associated with quantum critical behavior in some complex compounds.
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Affiliation(s)
- Yeonbae Lee
- School of Physics and Astronomy, University of Minnesota, 116 Church St. SE, Minneapolis, Minnesota 55455, USA
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7
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Lin YH, Goldman AM. Magnetic-field-tuned quantum phase transition in the insulating regime of ultrathin amorphous Bi films. Phys Rev Lett 2011; 106:127003. [PMID: 21517344 DOI: 10.1103/physrevlett.106.127003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2010] [Revised: 01/28/2011] [Indexed: 05/30/2023]
Abstract
A surprisingly strong variation of resistance with a perpendicular magnetic field, and a peak in the resistance versus field, R(B) has been found in insulating films of a sequence of homogeneous, quench-condensed films of amorphous Bi undergoing a thickness-tuned superconductor-insulator transition. Isotherms of magnetoresistance, rather than resistance, versus field were found to cross at a well-defined magnetic field higher than the field corresponding to the peak in R(B). For all values of B, R(T) was found to obey an Arrhenius form. At the crossover magnetic field the prefactor became equal to the quantum resistance of electron pairs h/4e², and the activation energy returned to its zero-field value. These observations suggest that the crossover is the signature of a quantum phase transition between two distinct insulating ground states, tuned by magnetic field.
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Affiliation(s)
- Yen-Hsiang Lin
- School of Physics and Astronomy, University of Minnesota, 116 Church Street SE, Minneapolis, Minnesota 55455, USA
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Abstract
Sudden unexplained death is a catastrophic complication of human idiopathic epilepsy, causing up to 18% of patient deaths. A molecular mechanism and an identified therapy have remained elusive. Here, we find that epilepsy occurs in mouse lines bearing dominant human LQT1 mutations for the most common form of cardiac long QT syndrome, which causes syncopy and sudden death. KCNQ1 encodes the cardiac KvLQT1 delayed rectifier channel, which has not been previously found in the brain. We have shown that, in these mice, this channel is found in forebrain neuronal networks and brainstem nuclei, regions in which a defect in the ability of neurons to repolarize after an action potential, as would be caused by this mutation, can produce seizures and dysregulate autonomic control of the heart. That long QT syndrome mutations in KCNQ1 cause epilepsy reveals the dual arrhythmogenic potential of an ion channelopathy coexpressed in heart and brain and motivates a search for genetic diagnostic strategies to improve risk prediction and prevention of early mortality in persons with seizure disorders of unknown origin.
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Affiliation(s)
- A M Goldman
- Department of Neurology, Baylor College of Medicine, Houston, TX 77030, USA
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Chen Y, Snyder SD, Goldman AM. Magnetic-field-induced superconducting state in Zn nanowires driven in the normal state by an electric current. Phys Rev Lett 2009; 103:127002. [PMID: 19792453 DOI: 10.1103/physrevlett.103.127002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2009] [Revised: 07/02/2009] [Indexed: 05/28/2023]
Abstract
Four-terminal resistance measurements have been carried out on Zn nanowires formed using electron-beam lithography. When driven resistive by current, these wires reenter the superconducting state upon application of small magnetic fields. The data are qualitatively different from those of previous experiments on superconducting nanowires, which revealed either negative magnetoresistance near T_{c} or high-magnetic-field-enhanced critical currents.
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Affiliation(s)
- Yu Chen
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
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Parendo KA, Sarwa KH, Tan B, Bhattacharya A, Eblen-Zayas M, Staley N, Goldman AM. Tuning the 2D Superconductor-Insulator Transition by Use of the Electric Field Effect. ACTA ACUST UNITED AC 2006. [DOI: 10.1063/1.2355018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Abstract
Low temperature scanning tunneling microscope images and spectroscopic data have been obtained on subnanometer size Pb clusters fabricated using the technique of buffer layer assisted growth. Discrete energy levels were resolved in current-voltage characteristics as current peaks rather than current steps. Distributions of peak voltage spacings and peak current heights were consistent with Wigner-Dyson and Porter-Thomas distributions, respectively, suggesting the relevance of random matrix theory to the description of the electronic eigenstates of the clusters. The observation of peaks rather than steps in the current-voltage characteristics is attributed to a resonant tunneling process involving the discrete energy levels of the cluster, the tip, and the states at the interface between the cluster and the substrate surface.
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Affiliation(s)
- L L A Adams
- School of Physics and Astronomy, University of Minnesota, 116 Church Street SE, Minneapolis, Minnesota 55455, USA
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12
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Parendo KA, Tan KHSB, Bhattacharya A, Eblen-Zayas M, Staley NE, Goldman AM. Electrostatic tuning of the superconductor-insulator transition in two dimensions. Phys Rev Lett 2005; 94:197004. [PMID: 16090201 DOI: 10.1103/physrevlett.94.197004] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2005] [Indexed: 05/03/2023]
Abstract
Superconductivity has been induced in insulating ultrathin films of amorphous bismuth using the electric field effect. The screening of the electron-electron interaction was found to increase with electron concentration in a manner correlated with the tendency towards superconductivity. This does not preclude an increase in the density of states being important in the development of superconductivity. The superconductor-insulator transition appears to belong to the universality class of the three dimensional XY model.
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Affiliation(s)
- Kevin A Parendo
- School of Physics and Astronomy, University of Minnesota, Minneapolis, 55455, USA
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13
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Eblen-Zayas M, Bhattacharya A, Staley NE, Kobrinskii AL, Goldman AM. Ambipolar gate effect and low temperature magnetoresistance of ultrathin La0.8Ca0.2MnO3 films. Phys Rev Lett 2005; 94:037204. [PMID: 15698317 DOI: 10.1103/physrevlett.94.037204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2004] [Indexed: 05/24/2023]
Abstract
Ultrathin La(0.8)Ca(0.2)MnO(3) films have been measured in a field-effect geometry. The gate electric field produces a significant ambipolar decrease in resistance at low temperatures. This is attributed to the development of a pseudogap in the density of states and the coupling of localized charge to strain. Within a mixed phase scenario, the gate effect and magnetoresistance are interpreted in the framework of a "general susceptibility," which describes how phase boundaries move through a hierarchical pinning landscape.
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Affiliation(s)
- M Eblen-Zayas
- School of Physics and Astronomy, University of Minnesota, 116 Church St. SE, Minneapolis, Minnesota 55455, USA
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14
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Hernandez LM, Bhattacharya A, Parendo KA, Goldman AM. Electrical transport of spin-polarized carriers in disordered ultrathin films. Phys Rev Lett 2003; 91:126801. [PMID: 14525384 DOI: 10.1103/physrevlett.91.126801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2003] [Indexed: 05/24/2023]
Abstract
Slow, nonexponential relaxation of electrical transport accompanied by memory effects has been induced in quench-condensed ultrathin amorphous Bi films by the application of a parallel magnetic field. This behavior, which is very similar to space-charge limited current flow, is found in extremely thin films well on the insulating side of the thickness-tuned superconductor-insulator transition. It may be the signature of a collective state that forms when the carriers are spin polarized at low temperatures and in high magnetic fields.
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Affiliation(s)
- L M Hernandez
- School of Physics and Astronomy, University of Minnesota, 116 Church Street SE, Minneapolis, Minnesota 55455, USA
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15
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Abstract
Bell's palsy (BP) is a peripheral facial nerve paralysis of unknown etiology. It is not a life-threatening condition; however, incomplete recovery may leave an individual stigmatized functionally, occupationally as well as socially. Recurrent paralyses are seldom, noted in 7-8% of all BP cases. More than two BP relapses are even less frequent. Adour et al. (1977) reported only two patients with four BP episodes from 1700 patients. Only one patient with more than four BP recurrences in the group containing 2414 BP cases were reported by Yanagihara et al. (1984). The highest reported number of BP recurrences in the accessible literature has been nine. We are presenting an unusual patient who suffered a total of eleven relapses of an idiopathic facial nerve palsy. Description of the case along with review of the relevant literature are discussed.
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Affiliation(s)
- E Kurca
- Neurologic Clinic, Jesenius Faculty of Medicine, Comenius University, Kollarova 1, Martin 03601, Slovak Republic
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Christiansen C, Hernandez LM, Goldman AM. Evidence of collective charge behavior in the insulating state of ultrathin films of superconducting metals. Phys Rev Lett 2002; 88:037004. [PMID: 11801084 DOI: 10.1103/physrevlett.88.037004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2001] [Indexed: 05/23/2023]
Abstract
Nonlinear I-V characteristics have been observed in insulating quench-condensed films which are locally superconducting. We suggest an interpretation in terms of the enhancement of conduction by the depinning of a Cooper pair charge density wave, Cooper pair crystal, or Cooper pair glass that may characterize this insulating regime. We propose that this is a more likely description than the Coulomb blockade or charge-anticharge unbinding phenomena.
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Affiliation(s)
- C Christiansen
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
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17
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Krivorotov IN, Nikolaev KR, Dobin AY, Goldman AM, Dahlberg ED. Exchange field induced magnetoresistance in colossal magnetoresistance manganites. Phys Rev Lett 2001; 86:5779-5782. [PMID: 11415356 DOI: 10.1103/physrevlett.86.5779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2000] [Indexed: 05/23/2023]
Abstract
The effect of an exchange field on the electrical transport in thin films of metallic ferromagnetic manganites has been investigated. The exchange field was induced both by direct exchange coupling in a ferromagnet/antiferromagnet multilayer and by indirect exchange interaction in a ferromagnet/paramagnet metallic superlattice. The electrical resistance of the metallic manganite layers was found to be determined by the magnitude of the vector sum of the effective exchange field and the external magnetic field.
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Affiliation(s)
- I N Krivorotov
- School of Physics and Astronomy, University of Minnesota, 116 Church St. SE, Minneapolis, Minnesota 55455, USA
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18
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deSantos LA, Lindell MM, Goldman AM, Luna MA, Murray JA. Calcification within metastatic pulmonary nodules from synovial sarcoma. Orthopedics 2001; 1:141-4. [PMID: 214733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A case of calcified metastatic lung deposits from synovial sarcoma of the leg is reported. Calcification within metastatic lung nodules from synovial sarcoma has not been previously reported. The differential diagnoses of calcified lung metastases are presented.
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Nikolaev KR, Dobin AY, Krivorotov IN, Cooley WK, Bhattacharya A, Kobrinskii AL, Glazman LI, Wentzovitch RM, Dahlberg ED, Goldman AM. Oscillatory exchange coupling and positive magnetoresistance in epitaxial oxide heterostructures. Phys Rev Lett 2000; 85:3728-3731. [PMID: 11030992 DOI: 10.1103/physrevlett.85.3728] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2000] [Indexed: 05/23/2023]
Abstract
Oscillation in the exchange coupling between ferromagnetic La(2/3)Ba(1/3)MnO3 layers with paramagnetic LaNiO3 spacer layer thickness has been observed in epitaxial heterostructures of the two oxides. This behavior is explained within the RKKY model employing an ab initio calculated band structure of LaNiO3, taking into account strong electron scattering in the spacer. Antiferromagnetically coupled superlattices exhibit a positive current-in-plane magnetoresistance.
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Affiliation(s)
- KR Nikolaev
- School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
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Abstract
Piezoelectric materials have many applications at cryogenic temperatures. However, the piezoelectric response below 10 kelvin is diminished, making the use of these materials somewhat marginal. Results are presented on strontium titanate (SrTiO3), which exhibits a rapidly increasing piezoelectric response with decreasing temperature below 50 kelvin; the magnitude of its response around 1 kelvin is comparable to that of the best materials at room temperature. This "giant" piezoelectric response may open the way for a broad class of applications including use in ultralow-temperature scanning microscopies and in a magnetic field-insensitive thermometer. These observations, and the possible divergence of the mechanical response to electric fields at even lower temperatures, may arise from an apparent quantum critical point at absolute zero.
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Affiliation(s)
- DE Grupp
- School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455, USA
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Chandrasekhar N, Valls OT, Goldman AM. Comment on "Mechanism of the electric-field effect in the high-Tc cuprates". Phys Rev B Condens Matter 1996; 54:10218-10220. [PMID: 9984763 DOI: 10.1103/physrevb.54.10218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Nordman CA, Achutharaman VS, Vas'ko VA, Kraus PA, Ruosi AR, Kadin AM, Goldman AM. Magnetic and electrical properties of the ferrimagnet Dy0.67Ca0.30MnO3+/-d. Phys Rev B Condens Matter 1996; 54:9023-9026. [PMID: 9984623 DOI: 10.1103/physrevb.54.9023] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Klemm RA, Goldman AM, Bhattacharya A, Buan J, Israeloff NE, Huang CC, Valls OT, Liu JZ, Shelton RN, Welp U. Comment on "Tensor Magnetothermal Resistance in YBa2Cu3O7-x via Andreev Scattering of Quasiparticles". Phys Rev Lett 1996; 77:3058. [PMID: 10062122 DOI: 10.1103/physrevlett.77.3058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Buan J, Stojkovic BP, Israeloff N, Goldman AM, Huang CC, Valls OT, Jacobs T, Sridhar S, Shih CR, Yang HD, Liu JZ, Shelton R. Experimental investigation of the pairing state of high-temperature superconductors. Phys Rev B Condens Matter 1996; 54:7462-7469. [PMID: 9984373 DOI: 10.1103/physrevb.54.7462] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Beauchamp KM, Spalding GC, Huber WH, Goldman AM. Pair breaking by spin-disorder scattering at the antiferromagnetic transition of the Dy3+ sublattice of DyBa2Cu3O7- delta films. Phys Rev Lett 1994; 73:2752-2755. [PMID: 10057183 DOI: 10.1103/physrevlett.73.2752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Achutharaman VS, Chandrasekhar N, Valls OT, Goldman AM. Origin of RHEED intensity oscillations during the growth of (Y,Dy)Ba2Cu3O7-x thin films. Phys Rev B Condens Matter 1994; 50:8122-8125. [PMID: 9974826 DOI: 10.1103/physrevb.50.8122] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Buan J, Stojkovic BP, Israeloff NE, Goldman AM, Huang CC, Valls OT, Liu JZ, Shelton R. Transverse magnetization study of the pairing state of the high-Tc superconductor LuBa2Cu3O7- delta. Phys Rev Lett 1994; 72:2632-2635. [PMID: 10055933 DOI: 10.1103/physrevlett.72.2632] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Nowak ER, Israeloff NE, Goldman AM. Magnetofingerprints of superconducting films: Vortex dynamics and mesoscopic-scale disorder. Phys Rev B Condens Matter 1994; 49:10047-10050. [PMID: 10009822 DOI: 10.1103/physrevb.49.10047] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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30
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Chandrasekhar N, Valls OT, Goldman AM. Charging effects observed in YBa2Cu3O7-x films: Influence of oxygen ordering. Phys Rev B Condens Matter 1994; 49:6220-6227. [PMID: 10011606 DOI: 10.1103/physrevb.49.6220] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Chandrasekhar N, Valls OT, Goldman AM. Mechanism for electric field effects observed in YBa2Cu3O7-x films. Phys Rev Lett 1993; 71:1079-1082. [PMID: 10055443 DOI: 10.1103/physrevlett.71.1079] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Schmidt MF, Israeloff NE, Goldman AM. Applicability of high-Tc paradigms to magnetic relaxation and irreversibility in superconducting Nb. Phys Rev B Condens Matter 1993; 48:3404-3416. [PMID: 10008770 DOI: 10.1103/physrevb.48.3404] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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34
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Wang T, Beauchamp KM, Mack AM, Israeloff NE, Spalding GC, Goldman AM. Anomalous magnetoresistance of ultrathin films of DyBa2Cu3O7-x near the superconductor-insulator transition. Phys Rev B Condens Matter 1993; 47:11619-11622. [PMID: 10005325 DOI: 10.1103/physrevb.47.11619] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Liu Y, Haviland DB, Nease B, Goldman AM. Insulator-to-superconductor transition in ultrathin films. Phys Rev B Condens Matter 1993; 47:5931-5946. [PMID: 10004542 DOI: 10.1103/physrevb.47.5931] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Liu Y, Haviland DB, Glazman LI, Goldman AM. Liu et al. reply. Phys Rev Lett 1992; 69:2998. [PMID: 10046697 DOI: 10.1103/physrevlett.69.2998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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38
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Chandrasekhar N, Achutharaman VS, Agrawal V, Goldman AM. Reflection high-energy electron-diffraction studies of the growth of YBa2Cu3O7-x and DyBa2Cu3O7-x superconducting thin films. Phys Rev B Condens Matter 1992; 46:8565-8572. [PMID: 10002622 DOI: 10.1103/physrevb.46.8565] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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39
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Liu Y, Nease B, Goldman AM. Superconducting fluctuation effects at a silver-germanium interface. Phys Rev B Condens Matter 1992; 45:10143-10146. [PMID: 10000913 DOI: 10.1103/physrevb.45.10143] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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40
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Yu F, Israeloff NE, Goldman AM, Bojko R. Scaling of I-V characteristics of Superconducting wire networks at irrational uniform frustration. Phys Rev Lett 1992; 68:2535-2538. [PMID: 10045422 DOI: 10.1103/physrevlett.68.2535] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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41
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Liu Y, Haviland DB, Glazman LI, Goldman AM. Resistive transitions in ultrathin superconducting films: Possible evidence for quantum tunneling of vortices. Phys Rev Lett 1992; 68:2224-2227. [PMID: 10045338 DOI: 10.1103/physrevlett.68.2224] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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42
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Yu G, Lee CH, Heeger AJ, Herron N, McCarron EM, Cong L, Spalding GC, Nordman CA, Goldman AM. Phase separation of photogenerated carriers and photoinduced superconductivity in high-Tc materials. Phys Rev B Condens Matter 1992; 45:4964-4977. [PMID: 10002139 DOI: 10.1103/physrevb.45.4964] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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43
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Liu JX, Wan JC, Goldman AM, Chang YC, Jiang PZ. Features of the density of states of high-Tc superconductors probed by vacuum tunneling. Phys Rev Lett 1991; 67:2195-2198. [PMID: 10044363 DOI: 10.1103/physrevlett.67.2195] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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44
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Liu Y, McGreer KA, Nease B, Haviland DB, Martinez G, Halley JW, Goldman AM. Scaling of the insulator-to-superconductor transition in ultrathin amorphous Bi films. Phys Rev Lett 1991; 67:2068-2071. [PMID: 10044327 DOI: 10.1103/physrevlett.67.2068] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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45
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Wan JC, McGreer KA, Glazman LI, Goldman AM, Shekhter RI. Two-state approximation in the Coulomb-blockade theory: Simple analytical results for a double-tunnel junction. Phys Rev B Condens Matter 1991; 43:9381-9384. [PMID: 9996633 DOI: 10.1103/physrevb.43.9381] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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46
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Wang T, Beauchamp KM, Berkley DD, Johnson BR, Liu J, Zhang J, Goldman AM. Onset of high-temperature superconductivity in the two-dimensional limit. Phys Rev B Condens Matter 1991; 43:8623-8626. [PMID: 9996500 DOI: 10.1103/physrevb.43.8623] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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47
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Yu F, Goldman AM, Bojko R, Soukoulis CM, Li Q, Grest GS. Localization of the mean-field superconducting order parameter on random wire networks. Phys Rev B Condens Matter 1990; 42:10536-10539. [PMID: 9995312 DOI: 10.1103/physrevb.42.10536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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48
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Tuominen M, Goldman AM, Chang YC, Jiang PZ. Anomalous behavior of the angular-dependent magnetic relaxation in single-crystal Bi2Sr2CaCu2Oy. Phys Rev B Condens Matter 1990; 42:8740-8743. [PMID: 9995078 DOI: 10.1103/physrevb.42.8740] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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49
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Wan JC, McGreer KA, Anand N, Nowak E, Goldman AM. Coulomb blockade on imaged mesoscopic lead grains. Phys Rev B Condens Matter 1990; 42:5604-5609. [PMID: 9996144 DOI: 10.1103/physrevb.42.5604] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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50
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Tuominen M, Goldman AM, Chang YZ, Jiang PZ. Magnetic anisotropy of high-Tc superconductors. Phys Rev B Condens Matter 1990; 42:412-419. [PMID: 9994555 DOI: 10.1103/physrevb.42.412] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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