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Nobukane H, Yanagihara K, Kunisada Y, Ogasawara Y, Isono K, Nomura K, Tanahashi K, Nomura T, Akiyama T, Tanda S. Co-appearance of superconductivity and ferromagnetism in a Ca 2RuO 4 nanofilm crystal. Sci Rep 2020; 10:3462. [PMID: 32103095 PMCID: PMC7044234 DOI: 10.1038/s41598-020-60313-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 02/10/2020] [Indexed: 12/03/2022] Open
Abstract
By tuning the physical and chemical pressures of layered perovskite materials we can realize the quantum states of both superconductors and insulators. By reducing the thickness of a layered crystal to a nanometer level, a nanofilm crystal can provide novel quantum states that have not previously been found in bulk crystals. Here we report the realization of high-temperature superconductivity in Ca2RuO4 nanofilm single crystals. Ca2RuO4 thin film with the highest transition temperature Tc (midpoint) of 64 K exhibits zero resistance in electric transport measurements. The superconducting critical current exhibited a logarithmic dependence on temperature and was enhanced by an external magnetic field. Magnetic measurements revealed a ferromagnetic transition at 180 K and diamagnetic magnetization due to superconductivity. Our results suggest the co-appearance of superconductivity and ferromagnetism in Ca2RuO4 nanofilm crystals. We also found that the induced bias current and the tuned film thickness caused a superconductor-insulator transition. The fabrication of micro-nanocrystals made of layered material enables us to discuss rich superconducting phenomena in ruthenates.
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Affiliation(s)
- Hiroyoshi Nobukane
- Department of Physics, Hokkaido University, Sapporo, 060-0810, Japan. .,Center of Education and Research for Topological Science and Technology, Hokkaido University, Sapporo, 060-8628, Japan.
| | - Kosei Yanagihara
- Department of Physics, Hokkaido University, Sapporo, 060-0810, Japan
| | - Yuji Kunisada
- Center for Advanced Research of Energy and Materials, Faculty of Engineering, Hokkaido University, Sapporo, 060-0828, Japan
| | - Yunito Ogasawara
- Department of Physics, Hokkaido University, Sapporo, 060-0810, Japan
| | - Kakeru Isono
- Department of Physics, Hokkaido University, Sapporo, 060-0810, Japan
| | - Kazushige Nomura
- Department of Physics, Hokkaido University, Sapporo, 060-0810, Japan
| | - Keita Tanahashi
- Center for Advanced Research of Energy and Materials, Faculty of Engineering, Hokkaido University, Sapporo, 060-0828, Japan
| | - Takahiro Nomura
- Center for Advanced Research of Energy and Materials, Faculty of Engineering, Hokkaido University, Sapporo, 060-0828, Japan
| | - Tomohiro Akiyama
- Center of Education and Research for Topological Science and Technology, Hokkaido University, Sapporo, 060-8628, Japan.,Center for Advanced Research of Energy and Materials, Faculty of Engineering, Hokkaido University, Sapporo, 060-0828, Japan
| | - Satoshi Tanda
- Center of Education and Research for Topological Science and Technology, Hokkaido University, Sapporo, 060-8628, Japan.,Department of Applied Physics, Hokkaido University, Sapporo, 060-8628, Japan
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2
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Hao L, Wang Z, Yang J, Meyers D, Sanchez J, Fabbris G, Choi Y, Kim JW, Haskel D, Ryan PJ, Barros K, Chu JH, Dean MPM, Batista CD, Liu J. Anomalous magnetoresistance due to longitudinal spin fluctuations in a J eff = 1/2 Mott semiconductor. Nat Commun 2019; 10:5301. [PMID: 31757946 PMCID: PMC6874576 DOI: 10.1038/s41467-019-13271-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 10/24/2019] [Indexed: 11/09/2022] Open
Abstract
As a hallmark of electronic correlation, spin-charge interplay underlies many emergent phenomena in doped Mott insulators, such as high-temperature superconductivity, whereas the half-filled parent state is usually electronically frozen with an antiferromagnetic order that resists external control. We report on the observation of a positive magnetoresistance that probes the staggered susceptibility of a pseudospin-half square-lattice Mott insulator built as an artificial SrIrO3/SrTiO3 superlattice. Its size is particularly large in the high-temperature insulating paramagnetic phase near the Néel transition. This magnetoresistance originates from a collective charge response to the large longitudinal spin fluctuations under a linear coupling between the external magnetic field and the staggered magnetization enabled by strong spin-orbit interaction. Our results demonstrate a magnetic control of the binding energy of the fluctuating particle-hole pairs in the Slater-Mott crossover regime analogous to the Bardeen-Cooper-Schrieffer-to-Bose-Einstein condensation crossover of ultracold-superfluids. Spin-charge interactions are at the core of electronic correlation phenomena in Mott insulators. Here, the authors observe a positive anomalous magnetoresistance in a SrIrO3/SrTiO3 superlattice, indicative of strong spin-charge fluctuations in this pseudospin-half square-lattice Mott insulator.
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Affiliation(s)
- Lin Hao
- Department of Physics and Astronomy, University of Tennessee, Knoxville, TN, 37996, USA
| | - Zhentao Wang
- Department of Physics and Astronomy, University of Tennessee, Knoxville, TN, 37996, USA
| | - Junyi Yang
- Department of Physics and Astronomy, University of Tennessee, Knoxville, TN, 37996, USA
| | - D Meyers
- Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Joshua Sanchez
- Department of Physics, University of Washington, Seattle, WA, 98105, USA
| | - Gilberto Fabbris
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Yongseong Choi
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Jong-Woo Kim
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Daniel Haskel
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Philip J Ryan
- Advanced Photon Source, Argonne National Laboratory, Argonne, IL, 60439, USA.,School of Physical Sciences, Dublin City University, Dublin 9, Ireland
| | - Kipton Barros
- Theoretical Division and CNLS, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA
| | - Jiun-Haw Chu
- Department of Physics, University of Washington, Seattle, WA, 98105, USA
| | - M P M Dean
- Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Cristian D Batista
- Department of Physics and Astronomy, University of Tennessee, Knoxville, TN, 37996, USA.,Quantum Condensed Matter Division and Shull-Wollan Center, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Jian Liu
- Department of Physics and Astronomy, University of Tennessee, Knoxville, TN, 37996, USA.
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3
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Viskadourakis Z, Sunku SS, Mukherjee S, Andersen BM, Ito T, Sasagawa T, Panagopoulos C. Ferroelectricity in underdoped La-based cuprates. Sci Rep 2015; 5:15268. [PMID: 26486276 PMCID: PMC4614081 DOI: 10.1038/srep15268] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 09/03/2015] [Indexed: 12/02/2022] Open
Abstract
Doping a “parent” antiferromagnetic Mott insulator in cuprates leads to short-range electronic correlations and eventually to high-Tc superconductivity. However, the nature of charge correlations in the lightly doped cuprates remains unclear. Understanding the intermediate electronic phase in the phase diagram (between the parent insulator and the high-Tc superconductor) is expected to elucidate the complexity both inside and outside the superconducting dome, and in particular in the underdoped region. One such phase is ferroelectricity whose origin and relation to the properties of high-Tc superconductors is subject of current research. Here we demonstrate that ferroelectricity and the associated magnetoelectric coupling are in fact common in La-214 cuprates namely, La2-xSrxCuO4, La2LixCu1-xO4 and La2CuO4+x. It is proposed that ferroelectricity may result from local CuO6 octahedral distortions, associated with the dopant atoms and clustering of the doped charge carriers, which break spatial inversion symmetry at the local scale whereas magnetoelectric coupling can be tuned through Dzyaloshinskii-Moriya interaction.
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Affiliation(s)
- Z Viskadourakis
- Crete Center for Quantum Complexity and Nanotechnology, University of Crete, Heraklion 71003, Greece.,IESL-FORTH, Vassilika Vouton, Heraklion 71110, Greece
| | - S S Sunku
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371 Singapore
| | - S Mukherjee
- Niels Bohr Institute, University of Copenhagen, Copenhagen DK-2100, Denmark
| | - B M Andersen
- Niels Bohr Institute, University of Copenhagen, Copenhagen DK-2100, Denmark
| | - T Ito
- National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8562, Japan
| | - T Sasagawa
- Materials and Structures Laboratory, Tokyo Institute of Technology, Kanagawa 226-8503, Japan
| | - C Panagopoulos
- Crete Center for Quantum Complexity and Nanotechnology, University of Crete, Heraklion 71003, Greece.,Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371 Singapore.,Department of Physics, University of Crete, Heraklion 71003, Greece
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4
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Raičević I, Popović D, Panagopoulos C, Benfatto L, Silva Neto MB, Choi ES, Sasagawa T. Skyrmions in a doped antiferromagnet. PHYSICAL REVIEW LETTERS 2011; 106:227206. [PMID: 21702631 DOI: 10.1103/physrevlett.106.227206] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2010] [Indexed: 05/31/2023]
Abstract
Magnetization and magnetoresistance have been measured in insulating antiferromagnetic La2Cu0.97Li0.03O4 over a wide range of temperatures, magnetic fields, and field orientations. The magnetoresistance step associated with a weak ferromagnetic transition exhibits a striking nonmonotonic temperature dependence, consistent with the presence of Skyrmions.
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Affiliation(s)
- I Raičević
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
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5
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Ding JF, Yin YW, Xie L, Yu QX, Li XG. Spin structure transition in La(1.6-x)Nd(0.4)Sr(x)CuO(4) superconductors. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2010; 22:275701. [PMID: 21399264 DOI: 10.1088/0953-8984/22/27/275701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The field and temperature dependencies of the spin structures in the normal states of La(1.6-x)Nd(0.4)Sr(x)CuO(4) (x = 0.10, 0.12, and 0.15) single crystals have been studied by measuring the magnetoresistance and susceptibility. A negative magnetoresistance appears just below the spin-ordering temperature for the magnetic fields parallel to the CuO(2) plane, which can be attributed to the spin-flop transition of the special spin structure in the normal state of the system. The anisotropic variations of susceptibilities with temperature for all the three specimens can be described in the framework of the crystal-field theory. The well fitted broad peaks of the in-plane susceptibilities χ(ab) for the specimens suggest that the susceptibilities are dominated by Nd(3+), and thus the spin reorientation of Cu(2+) in the CuO(2) plane can not be observed from the study of the susceptibility.
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Affiliation(s)
- J F Ding
- Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026, People's Republic of China
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6
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Raicević I, Jaroszyński J, Popović D, Panagopoulos C, Sasagawa T. Evidence for charge glasslike behavior in lightly doped La2-xSrxCuO4 at low temperatures. PHYSICAL REVIEW LETTERS 2008; 101:177004. [PMID: 18999777 DOI: 10.1103/physrevlett.101.177004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2008] [Indexed: 05/27/2023]
Abstract
A c-axis magnetotransport and resistance noise study in La_(1.97)Sr_(0.03)CuO_(4) reveals clear signatures of glassiness, such as hysteresis, memory, and slow, correlated dynamics, but only at temperatures (T) well below the spin glass transition temperature T_(sg). The results strongly suggest the emergence of charge glassiness, or dynamic charge ordering, as a result of Coulomb interactions.
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Affiliation(s)
- I Raicević
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310, USA.
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7
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Wu T, Wang CH, Wu G, Fang DF, Luo JL, Liu GT, Chen XH. Giant anisotropy of the magnetoresistance and the 'spin valve' effect in antiferromagnetic Nd(2-x)Ce(x)CuO(4). JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2008; 20:275226. [PMID: 21694387 DOI: 10.1088/0953-8984/20/27/275226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We have studied anisotropic magnetoresistance (MR) and magnetization with a rotating magnetic field (B) within the CuO(2) plane in lightly doped AF Nd(2-x)Ce(x)CuO(4). A giant anisotropy in the MR is observed at low temperature, below 5 K. The c-axis resistivity can be tuned over about one order of magnitude just by changing the B direction within the CuO(2) plane, and a scaling behavior for the out-of-plane and in-plane MR is found. A 'spin valve' effect is proposed for explaining the giant anisotropy of the out-of-plane MR and the evolution of the scaling parameters with the external field. It is found that the field-induced spin-flop transition of the Nd(3+) layer under high magnetic field is the key to understanding the giant anisotropy. These results suggest that a novel entanglement of charge and spin dominates the underlying physics.
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Affiliation(s)
- T Wu
- Hefei National Laboratory for Physical Science at Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
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8
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Lake B, Lefmann K, Christensen NB, Aeppli G, McMorrow DF, Ronnow HM, Vorderwisch P, Smeibidl P, Mangkorntong N, Sasagawa T, Nohara M, Takagi H. Three-dimensionality of field-induced magnetism in a high-temperature superconductor. NATURE MATERIALS 2005; 4:658-62. [PMID: 16100515 DOI: 10.1038/nmat1452] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2005] [Accepted: 06/30/2005] [Indexed: 05/04/2023]
Abstract
Many physical properties of high-temperature superconductors are two-dimensional phenomena derived from their square-planar CuO2 building blocks. This is especially true of the magnetism from the copper ions. As mobile charge carriers enter the CuO2 layers, the antiferromagnetism of the parent insulators, where each copper spin is antiparallel to its nearest neighbours, evolves into a fluctuating state where the spins show tendencies towards magnetic order of a longer periodicity. For certain charge-carrier densities, quantum fluctuations are sufficiently suppressed to yield static long-period order, and external magnetic fields also induce such order. Here we show that, in contrast to the chemically controlled order in superconducting samples, the field-induced order in these same samples is actually three-dimensional, implying significant magnetic linkage between the CuO2 planes. The results are important because they show that there are three-dimensional magnetic couplings that survive into the superconducting state, and coexist with the crucial inter-layer couplings responsible for three-dimensional superconductivity. Both types of coupling will straighten the vortex lines, implying that we have finally established a direct link between technical superconductivity, which requires zero electrical resistance in an applied magnetic field and depends on vortex dynamics, and the underlying antiferromagnetism of the cuprates.
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Affiliation(s)
- B Lake
- Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, UK.
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9
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Luo JL, Wang NL, Liu GT, Wu D, Jing XN, Hu F, Xiang T. Metamagnetic transition in Na 0.85 CoO2 single crystals. PHYSICAL REVIEW LETTERS 2004; 93:187203. [PMID: 15525203 DOI: 10.1103/physrevlett.93.187203] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2004] [Indexed: 05/24/2023]
Abstract
We report the magnetization, specific heat, and transport measurements of a high quality Na(0.85)CoO2 single crystal in applied magnetic fields up to 14 T. At high temperatures, the system is in a paramagnetic phase. It undergoes a magnetic phase transition below approximately 20 K. For the field H||c, the measurement data of magnetization, specific heat, and magnetoresistance reveal a metamagnetic transition from an antiferromagnetic state to a quasiferromagnetic state at about 8 T at low temperatures. However, no transition is observed in the magnetization measurements up to 14 T for H perpendicular c. The low temperature magnetic phase diagram of Na(0.85)CoO2 is determined.
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Affiliation(s)
- J L Luo
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
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10
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Smith DF, Slichter CP, Schlueter JA, Kini AM, Daugherty RG. Precise determination of the orientation of the Dzialoshinskii-Moriya vector in kappa-(BEDT-TTF)2Cu[N(CN)(2)]Cl. PHYSICAL REVIEW LETTERS 2004; 93:167002. [PMID: 15525021 DOI: 10.1103/physrevlett.93.167002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2004] [Indexed: 05/24/2023]
Abstract
A novel electron spin-reorientation transition is discovered by 13C NMR in the quasi-two-dimensional organic antiferromagnet kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Cl. The spin reorientation occurs as an external field is swept through the orientation of the characteristic vector of the Dzialoshinskii-Moriya (DM) interaction, thus providing a precise determination of the orientation of the DM vector. Such a spin reorientation could help to characterize the DM interaction in other antiferromagnetic systems.
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Affiliation(s)
- Dylan F Smith
- Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
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11
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Gozar A, Dennis BS, Blumberg G, Komiya S, Ando Y. Magnetic order in lightly doped La2-xSrxCuO4. PHYSICAL REVIEW LETTERS 2004; 93:027001. [PMID: 15323941 DOI: 10.1103/physrevlett.93.027001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2003] [Indexed: 05/24/2023]
Abstract
We study long wavelength magnetic excitations in lightly doped La2-xSrxCuO4 (x</=0.03) detwinned crystals. The lowest energy magnetic anisotropy induced gap can be understood in terms of the antisymmetric spin interaction inside the antiferromagnetic (AF) phase. The second magnetic resonance, analyzed in terms of in-plane spin anisotropy, shows unconventional behavior within the AF state; it led to the discovery of collective spin excitations pertaining to a field induced magnetically ordered state. This state persists in a 9 T field to more than 100 K above the Néel temperature in x=0.01.
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Affiliation(s)
- A Gozar
- Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey 07974, USA.
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12
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Ando Y, Lavrov AN, Komiya S. Anisotropic magnetoresistance in lightly doped La(2)-(x)Sr(x)CuO(4): impact of antiphase domain boundaries on the electron transport. PHYSICAL REVIEW LETTERS 2003; 90:247003. [PMID: 12857217 DOI: 10.1103/physrevlett.90.247003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2002] [Indexed: 05/24/2023]
Abstract
Detailed behavior of the magnetoresistance (MR) is studied in lightly doped antiferromagnetic La(1.99)Sr(0.01)CuO(4), where, thanks to the weak-ferromagnetic moment due to spin canting, the antiferromagnetic (AF) domain structure can be manipulated by the magnetic field. The MR behavior demonstrates that CuO(2) planes indeed contain antiphase AF-domain boundaries in which charges are confined, forming antiphase stripes. The data suggest that a high magnetic field turns the antiphase stripes into in-phase stripes, and the latter appear to give better conduction than the former, which challenges the notion that the antiphase character of stripes facilitates charge motion.
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Affiliation(s)
- Yoichi Ando
- Central Research Institute of Electric Power Industry, Komae, Tokyo 201-8511, Japan
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Tsukada I, Takeya J, Masuda T, Uchinokura K. Two-stage spin-flop transitions in the S = 1/2 antiferromagnetic spin chain BaCu(2)Si(2)O(7). PHYSICAL REVIEW LETTERS 2001; 87:127203. [PMID: 11580548 DOI: 10.1103/physrevlett.87.127203] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2001] [Indexed: 05/23/2023]
Abstract
Two-stage spin-flop transitions are observed in the quasi-one-dimensional antiferromagnet BaCu(2)Si(2)O(7). A magnetic field applied along the easy axis induces a spin-flop transition at 2.0 T followed by a second transition at 4.9 T. The magnetic susceptibility indicates the presence of Dzyaloshinskii-Moriya (DM) antisymmetric interactions between the intrachain neighboring spins. We discuss a possible mechanism whereby the geometrical competition between DM and interchain interactions, as discussed for the two-dimensional antiferromagnet La(2)CuO(4), causes the two-stage spin-flop transitions.
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Affiliation(s)
- I Tsukada
- Central Research Institute of Electric Power Industry, 2-11-1 Iwadokita, Komae-shi, Tokyo 201-8511, Japan
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14
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Inaguma Y, Itoh M, Oguni M, Kyômen T. Effect of oxygen content on the anomalies at successive phase transitions of La2CuO4+ delta single crystal below 320 K. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:7455-7461. [PMID: 9984372 DOI: 10.1103/physrevb.54.7455] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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15
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Neutron scattering study of the two-dimensional spinS=1/2 square-lattice Heisenberg antiferromagnet Sr2CuO2Cl2. ACTA ACUST UNITED AC 1995. [DOI: 10.1007/bf01313844] [Citation(s) in RCA: 123] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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16
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Sumarlin IW, Lynn JW, Chattopadhyay T, Barilo SN, Zhigunov DI, Peng JL. Magnetic structure and spin dynamics of the Pr and Cu in Pr2CuO4. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:5824-5839. [PMID: 9979494 DOI: 10.1103/physrevb.51.5824] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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17
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Fainstein A, Butera A, Tovar M. Magnetic-resonance modes for Eu2-xGdxCuO4, a compound with coupled paramagnetic-weak-ferromagnetic excitations. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:16708-16717. [PMID: 9976058 DOI: 10.1103/physrevb.50.16708] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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18
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Büchner B, Breuer M, Freimuth A, Kampf AP. Critical buckling for the disappearance of superconductivity in rare-earth-doped La2-xSrxCuO4. PHYSICAL REVIEW LETTERS 1994; 73:1841-1844. [PMID: 10056900 DOI: 10.1103/physrevlett.73.1841] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Thio T, Aharony A. Weak ferromagnetism and tricriticality in pure La2CuO4. PHYSICAL REVIEW LETTERS 1994; 73:894-897. [PMID: 10057566 DOI: 10.1103/physrevlett.73.894] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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20
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Koshibae W, Ohta Y, Maekawa S. Theory of Dzyaloshinski-Moriya antiferromagnetism in distorted CuO2 and NiO2 planes. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:3767-3778. [PMID: 9976655 DOI: 10.1103/physrevb.50.3767] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Shekhtman L, Korenblit IY, Aharony A. Explanation of the giant magnetoconductivity in La2CuO4. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:7080-7083. [PMID: 10009444 DOI: 10.1103/physrevb.49.7080] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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22
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Fainstein A, Butera A, Zysler RD, Tovar M, Rettori C, Rao D, Oseroff SB, Fisk Z, Cheong SW, Vier DC, Schultz S. Field-induced spin reorientation in Eu2CuO4:Gd studied by magnetic resonance. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:16775-16784. [PMID: 10008262 DOI: 10.1103/physrevb.48.16775] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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23
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Keimer B, Birgeneau RJ, Cassanho A, Endoh Y, Greven M, Kastner MA, Shirane G. Soft phonon behavior and magnetism at the low temperature structural phase transition of La1.65Nd0.35CuO4. ACTA ACUST UNITED AC 1993. [DOI: 10.1007/bf01344067] [Citation(s) in RCA: 59] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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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. PHYSICAL REVIEW. B, CONDENSED 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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Fernández-Díaz MT, Martínez JL, Rodríguez-Carvajal J, Beille J, Martínez B, Obradors X, Odier P. Metamagnetism in single-crystal Pr2NiO4. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:5834-5840. [PMID: 10004531 DOI: 10.1103/physrevb.47.5834] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Koshibae W, Ohta Y, Maekawa S. Electronic and magnetic structures of cuprates with spin-orbit interaction. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:3391-3400. [PMID: 10006426 DOI: 10.1103/physrevb.47.3391] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Berger J, Aharony A. Temperature dependence of the field-induced magnetic phases in La2CuO4. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:1016-1023. [PMID: 10005580 DOI: 10.1103/physrevb.47.1016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Keimer B, Belk N, Birgeneau RJ, Cassanho A, Chen CY, Greven M, Kastner MA, Aharony A, Endoh Y, Erwin RW, Shirane G. Magnetic excitations in pure, lightly doped, and weakly metallic La2CuO4. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:14034-14053. [PMID: 10003473 DOI: 10.1103/physrevb.46.14034] [Citation(s) in RCA: 269] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Berger J, Aharony A. Field-dependent magnetic phases in La2CuO4 at zero temperature. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:6477-6487. [PMID: 10002337 DOI: 10.1103/physrevb.46.6477] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Bonesteel NE, Rice TM, Zhang FC. Spin-orbit coupling and spirals in doped La2CuO4. PHYSICAL REVIEW LETTERS 1992; 68:2684-2687. [PMID: 10045461 DOI: 10.1103/physrevlett.68.2684] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Ioffe LB, Wiegmann P. Negative magnetoresistance of the normal state of the doped Mott insulator. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 45:519-522. [PMID: 10000219 DOI: 10.1103/physrevb.45.519] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Coffey D, Rice TM, Zhang FC. Dzyaloshinskii-Moriya interaction in the cuprates. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:10112-10116. [PMID: 9999014 DOI: 10.1103/physrevb.44.10112] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Singh A, Teanovic Z. Magnetic dynamics in La2CuO4 with interlayer coupling and anisotropy gaps. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:11445-11447. [PMID: 9996895 DOI: 10.1103/physrevb.43.11445] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Brill TM, Hampel G, Mertens F, Schürmann R, Assmus W, Lüthi B. Magnetic and elastic properties of La2NiO4+x. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:10548-10554. [PMID: 9996781 DOI: 10.1103/physrevb.43.10548] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Chakravarty S, Gelfand MP, Kopietz P, Orbach R, Wollensak M. Theory of nuclear relaxation in La2CuO4. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:2796-2808. [PMID: 9997578 DOI: 10.1103/physrevb.43.2796] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Sun K, Cho JH, Chou FC, Lee WC, Miller LL, Johnston DC, Hidaka Y, Murakami T. Heat capacity of single-crystal La2CuO4 and polycrystalline La2-xSrxCuO4 (0 <= x <= 0.20) from 110 to 600 K. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:239-246. [PMID: 9996208 DOI: 10.1103/physrevb.43.239] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Chen CY, Birgeneau RJ, Kastner MA, Preyer NW, Thio T. Frequency and magnetic-field dependence of the dielectric constant and conductivity of La2CuO4+y. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 43:392-401. [PMID: 9996223 DOI: 10.1103/physrevb.43.392] [Citation(s) in RCA: 124] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Matsuda M, Yamada K, Kakurai K, Kadowaki H, Thurston TR, Endoh Y, Hidaka Y, Birgeneau RJ, Kastner MA, Gehring PM, Moudden AH, Shirane G. Three-dimensional magnetic structures and rare-earth magnetic ordering in Nd2CuO4 and Pr2CuO4. PHYSICAL REVIEW. B, CONDENSED MATTER 1990; 42:10098-10107. [PMID: 9995265 DOI: 10.1103/physrevb.42.10098] [Citation(s) in RCA: 90] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Coffey D, Bedell KS, Trugman SA. Effective spin Hamiltonian for the CuO planes in La2CuO4 and metamagnetism. PHYSICAL REVIEW. B, CONDENSED MATTER 1990; 42:6509-6514. [PMID: 9994736 DOI: 10.1103/physrevb.42.6509] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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