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Zhou JS, Xu RZ, Yu XQ, Cheng FJ, Zhao WX, Du X, Wang SZ, Zhang QQ, Gu X, He SM, Li YD, Ren MQ, Ma XC, Xue QK, Chen YL, Song CL, Yang LX. Evidence for Band Renormalizations in Strong-Coupling Superconducting Alkali-Fulleride Films. PHYSICAL REVIEW LETTERS 2023; 130:216004. [PMID: 37295091 DOI: 10.1103/physrevlett.130.216004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 02/06/2023] [Accepted: 04/17/2023] [Indexed: 06/12/2023]
Abstract
There has been a long-standing debate about the mechanism of the unusual superconductivity in alkali-intercalated fullerides. In this Letter, using high-resolution angle-resolved photoemission spectroscopy, we systematically investigate the electronic structures of superconducting K_{3}C_{60} thin films. We observe a dispersive energy band crossing the Fermi level with the occupied bandwidth of about 130 meV. The measured band structure shows prominent quasiparticle kinks and a replica band involving the Jahn-Teller active phonon modes, which reflects strong electron-phonon coupling in the system. The electron-phonon coupling constant is estimated to be about 1.2, which dominates the quasiparticle mass renormalization. Moreover, we observe an isotropic nodeless superconducting gap beyond the mean-field estimation (2Δ/k_{B}T_{c}≈5). Both the large electron-phonon coupling constant and large reduced superconducting gap suggest a strong-coupling superconductivity in K_{3}C_{60}, while the electronic correlation effect is suggested by the observation of a waterfall-like band dispersion and the small bandwidth compared with the effective Coulomb interaction. Our results not only directly visualize the crucial band structure but also provide important insights into the mechanism of the unusual superconductivity of fulleride compounds.
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Affiliation(s)
- J S Zhou
- State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China
- Frontier Science Center for Quantum Information, Beijing 100084, China
| | - R Z Xu
- State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China
- Frontier Science Center for Quantum Information, Beijing 100084, China
| | - X Q Yu
- State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China
- Frontier Science Center for Quantum Information, Beijing 100084, China
| | - F J Cheng
- State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China
- Frontier Science Center for Quantum Information, Beijing 100084, China
| | - W X Zhao
- State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China
- Frontier Science Center for Quantum Information, Beijing 100084, China
| | - X Du
- State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China
- Frontier Science Center for Quantum Information, Beijing 100084, China
| | - S Z Wang
- State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China
- Frontier Science Center for Quantum Information, Beijing 100084, China
| | - Q Q Zhang
- State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China
- Frontier Science Center for Quantum Information, Beijing 100084, China
| | - X Gu
- State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China
- Frontier Science Center for Quantum Information, Beijing 100084, China
| | - S M He
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - Y D Li
- State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China
- Frontier Science Center for Quantum Information, Beijing 100084, China
| | - M Q Ren
- State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China
- Frontier Science Center for Quantum Information, Beijing 100084, China
| | - X C Ma
- State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China
- Frontier Science Center for Quantum Information, Beijing 100084, China
- Collaborative Innovation Center of Quantum Matter, Beijing 100084, China
| | - Q K Xue
- State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China
- Frontier Science Center for Quantum Information, Beijing 100084, China
| | - Y L Chen
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
- School of Physical Science and Technology, ShanghaiTech University and CAS-Shanghai Science Research Center, Shanghai 201210, China
- ShanghaiTech Laboratory for Topological Physics, Shanghai 200031, China
| | - C L Song
- State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China
- Frontier Science Center for Quantum Information, Beijing 100084, China
- Collaborative Innovation Center of Quantum Matter, Beijing 100084, China
| | - L X Yang
- State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China
- Frontier Science Center for Quantum Information, Beijing 100084, China
- Collaborative Innovation Center of Quantum Matter, Beijing 100084, China
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Probing Phase Separation and Local Lattice Distortions in Cuprates by Raman Spectroscopy. CONDENSED MATTER 2019. [DOI: 10.3390/condmat4040087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
It is generally accepted that high temperature superconductors emerge when extra carriers are introduced in the parent state, which looks like a Mott insulator. Competition of the order parameters drives the system into a poorly defined pseudogap state before acquiring the normal Fermi liquid behavior with further doping. Within the low doping level, the system has the tendency for mesoscopic phase separation, which seems to be a general characteristic in all high Tc compounds, but also in the materials of colossal magnetoresistance or the relaxor ferroelectrics. In all these systems, metastable phases can be created by tuning physical variables, such as doping or pressure, and the competing order parameters can drive the compound to various states. Structural instabilities are expected at critical points and Raman spectroscopy is ideal for detecting them, since it is a very sensitive technique for detecting small lattice modifications and instabilities. In this article, phase separation and lattice distortions are examined on the most characteristic family of high temperature superconductors, the cuprates. The effect of doping or atomic substitutions on cuprates is examined concerning the induced phase separation and hydrostatic pressure for activating small local lattice distortions at the edge of lattice instability.
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Cantaluppi A, Buzzi M, Jotzu G, Nicoletti D, Mitrano M, Pontiroli D, Riccò M, Perucchi A, Di Pietro P, Cavalleri A. Pressure tuning of light-induced superconductivity in K 3C 60. NATURE PHYSICS 2018; 14:837-841. [PMID: 30079096 PMCID: PMC6071848 DOI: 10.1038/s41567-018-0134-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Optical excitation at terahertz frequencies has emerged as an effective means to dynamically manipulate complex materials. In the molecular solid K3C60, short mid-infrared pulses transform the high-temperature metal into a non-equilibrium state with the optical properties of a superconductor. Here we tune this effect with hydrostatic pressure and find that the superconducting-like features gradually disappear at around 0.3 GPa. Reduction with pressure underscores the similarity with the equilibrium superconducting phase of K3C60, in which a larger electronic bandwidth induced by pressure is also detrimental for pairing. Crucially, our observation excludes alternative interpretations based on a high-mobility metallic phase. The pressure dependence also suggests that transient, incipient superconductivity occurs far above the 150 K hypothesised previously, and rather extends all the way to room temperature.
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Affiliation(s)
- A. Cantaluppi
- Max Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
| | - M. Buzzi
- Max Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany
| | - G. Jotzu
- Max Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany
| | - D. Nicoletti
- Max Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
| | - M. Mitrano
- Max Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany
| | - D. Pontiroli
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università degli Studi di Parma, Parma, Italy
| | - M. Riccò
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università degli Studi di Parma, Parma, Italy
| | - A. Perucchi
- INSTM UdR Trieste-ST and Elettra–Sincrotrone Trieste, Trieste, Italy
| | - P. Di Pietro
- INSTM UdR Trieste-ST and Elettra–Sincrotrone Trieste, Trieste, Italy
| | - A. Cavalleri
- Max Planck Institute for the Structure and Dynamics of Matter, Hamburg, Germany
- The Hamburg Centre for Ultrafast Imaging, Hamburg, Germany
- Department of Physics, Oxford University, Clarendon Laboratory, Oxford UK
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Kholiya K, Chandra J. Equation of state model for studying high-pressure compression behaviour of nanomaterials. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE 2018. [DOI: 10.1016/j.jtusci.2013.09.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Kuldeep Kholiya
- Department of Applied Science, B.T. Kumaon Institute of Technology, Dwarahat 263653, India
| | - Jeewan Chandra
- Department of Applied Science, G.B. Pant Engineering College Ghurdauri, Pauri Garhwal 246194, India
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Nomura Y, Sakai S, Capone M, Arita R. Exotic s-wave superconductivity in alkali-doped fullerides. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2016; 28:153001. [PMID: 26974650 DOI: 10.1088/0953-8984/28/15/153001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Alkali-doped fullerides (A3C60 with A = K, Rb, Cs) show a surprising phase diagram, in which a high transition-temperature (Tc) s-wave superconducting state emerges next to a Mott insulating phase as a function of the lattice spacing. This is in contrast with the common belief that Mott physics and phonon-driven s-wave superconductivity are incompatible, raising a fundamental question on the mechanism of the high-Tc superconductivity. This article reviews recent ab initio calculations, which have succeeded in reproducing comprehensively the experimental phase diagram with high accuracy and elucidated an unusual cooperation between the electron-phonon coupling and the electron-electron interactions leading to Mott localization to realize an unconventional s-wave superconductivity in the alkali-doped fullerides. A driving force behind the exotic physics is unusual intramolecular interactions, characterized by the coexistence of a strongly repulsive Coulomb interaction and a small effectively negative exchange interaction. This is realized by a subtle energy balance between the coupling with the Jahn-Teller phonons and Hund's coupling within the C60 molecule. The unusual form of the interaction leads to a formation of pairs of up- and down-spin electrons on the molecules, which enables the s-wave pairing. The emergent superconductivity crucially relies on the presence of the Jahn-Teller phonons, but surprisingly benefits from the strong correlations because the correlations suppress the kinetic energy of the electrons and help the formation of the electron pairs, in agreement with previous model calculations. This confirms that the alkali-doped fullerides are a new type of unconventional superconductors, where the unusual synergy between the phonons and Coulomb interactions drives the high-Tc superconductivity.
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Affiliation(s)
- Yusuke Nomura
- Department of Applied Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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Ganin AY, Takabayashi Y, Khimyak YZ, Margadonna S, Tamai A, Rosseinsky MJ, Prassides K. Bulk superconductivity at 38 K in a molecular system. NATURE MATERIALS 2008; 7:367-371. [PMID: 18425134 DOI: 10.1038/nmat2179] [Citation(s) in RCA: 109] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2007] [Accepted: 03/19/2008] [Indexed: 05/26/2023]
Abstract
C(60)-based solids are archetypal molecular superconductors with transition temperatures (Tc) as high as 33 K (refs 2-4). Tc of face-centred-cubic (f.c.c.) A(3)C(60) (A=alkali metal) increases monotonically with inter C(60) separation, which is controlled by the A(+) cation size. As Cs(+) is the largest such ion, Cs(3)C(60) is a key material in this family. Previous studies revealing trace superconductivity in Cs(x)C(60) materials have not identified the structure or composition of the superconducting phase owing to extremely small shielding fractions and low crystallinity. Here, we show that superconducting Cs(3)C(60) can be reproducibly isolated by solvent-controlled synthesis and has the highest Tc of any molecular material at 38 K. In contrast to other A(3)C(60) materials, two distinct cubic Cs(3)C(60) structures are accessible. Although f.c.c. Cs(3)C(60) can be synthesized, the superconducting phase has the A15 structure based uniquely among fullerides on body-centred-cubic packing. Application of hydrostatic pressure controllably tunes A15 Cs(3)C(60) from insulating at ambient pressure to superconducting without crystal structure change and reveals a broad maximum in Tc at approximately 7 kbar. We attribute the observed Tc maximum as a function of inter C(60)separation--unprecedented in fullerides but reminiscent of the atom-based cuprate superconductors--to the role of strong electronic correlations near the metal-insulator transition onset.
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Affiliation(s)
- Alexey Y Ganin
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, UK
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Liu G, Zhao Y, Deng K, Liu Z, Chu W, Chen J, Yang Y, Zheng K, Huang H, Ma W, Song L, Yang H, Gu C, Rao G, Wang C, Xie S, Sun L. Highly dense and perfectly aligned single-walled carbon nanotubes fabricated by diamond wire drawing dies. NANO LETTERS 2008; 8:1071-1075. [PMID: 18338871 DOI: 10.1021/nl073007o] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We have developed a low-cost and effective method to align single-walled carbon nanotubes (SWNTs) using a series of diamond wire drawing dies. The obtained SWNTs are highly dense and perfectly aligned. X-ray diffraction (XRD) indicates that the highly dense and perfectly aligned SWNTs (HDPA-SWNTs) form a two-dimensional triangular lattice with a lattice constant of 19.62 A. We observe a sharp (002) reflection in the XRD pattern, which should be ascribed to an intertube spacing 3.39 A of adjacent SWNTs. Raman spectra reveal that the radical breath mode (RBM) of SWNTs with larger diameter in the HDPA-SWNTs is suppressed compared with that of as-grown SWNTs. The HDPA-SWNTs have a large density, approximately 1.09 g/cm 3, and a low resistivity, approximately 2 m Omega cm, at room temperature, as well as a large response to light illumination.
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Affiliation(s)
- Guangtong Liu
- National Center for Nanoscience and Technology, Beijing 100080, China
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Claves D. A Prospective Overview of the Potential of Fluorofullerenes as Host Materials for Intercalation Chemistry. J Phys Chem B 2005; 109:12399-405. [PMID: 16852534 DOI: 10.1021/jp051273p] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A theoretical survey of the ability of fluorofullerene crystals to act as host lattices for intercalation chemistry is proposed on a thermochemical basis and from the assumption that complete charge transfer between the fluorocarbon network and an electropositive intercalant species should occur upon insertion. A nearly exhaustive examination is performed throughout the fluoro[60]fullerene family, describing the influence of the intercalated element considered, stoichiometry, structural type, and fluorine content on the potential stability of an intercalated phase. Decomposition of the latter into a metal fluoride is then discussed. When extended to a general scheme, emphasizing the role played by the number of carbon atoms in the initial cluster, the present model shows that stable fluorofulleride salts may be expected to form in some cases. A final insight into the solid state properties of this class of materials, combined with a widespread range of potential applications, is provided.
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Affiliation(s)
- Daniel Claves
- Laboratoire des Matériaux Inorganiques, UMR CNRS 6002 - Université Blaise Pascal, 24 Av. des Landais, 63177 Aubière Cedex, France.
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9
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Dahlke P, Denning MS, Henry PF, Rosseinsky MJ. Superconductivity in Expanded fcc C603- Fullerides. J Am Chem Soc 2000. [DOI: 10.1021/ja002861d] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Patrik Dahlke
- Contribution from the Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K
| | - Mark S. Denning
- Contribution from the Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K
| | - Paul F. Henry
- Contribution from the Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K
| | - Matthew J. Rosseinsky
- Contribution from the Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K
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Margadonna S, Brown CM, Prassides K, Fitch AN, Knudsen KD, Bihan TL, Mézouar M, Hirosawa I, Tanigaki K. Temperature and pressure dependence of orientational disorder and bonding in Li2CsC60. ACTA ACUST UNITED AC 1999. [DOI: 10.1016/s1466-6049(99)00024-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Pressure and Temperature Evolution of the Structure of the Superconducting Na2CsC60 Fulleride. J SOLID STATE CHEM 1999. [DOI: 10.1006/jssc.1998.8159] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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12
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Iwasa Y, Shimoda H, Takenobu T, Honjo S, Mitani T, Tou H, Maniwa Y, Brown CM, Prassides K. Current Issues of Intercalation and Superconductivity in Solid State Fullerenes. ACTA ACUST UNITED AC 1999. [DOI: 10.1080/10641229909351363] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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Yoshida Y, Kubozono Y, Kashino S, Murakami Y. Structure and electronic properties of Cs3C60 under ambient pressure revealed by X-ray diffraction and ESR. Chem Phys Lett 1998. [DOI: 10.1016/s0009-2614(98)00598-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Shimoda H, Iwasa Y, Miyamoto Y, Maniwa Y, Mitani T. Superconductivity of fcc fullerides containing off-centered octahedral cations. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:R15653-R15656. [PMID: 9985725 DOI: 10.1103/physrevb.54.r15653] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Yildirim T, Barbedette L, Fischer JE, Bendele GM, Stephens PW, Lin CL, Goze C, Rachdi F, Robert J, Petit P, Palstra TT. Synthesis and properties of mixed alkali-metal-alkaline-earth fullerides. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:11981-11984. [PMID: 9985047 DOI: 10.1103/physrevb.54.11981] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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16
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Diederichs J, Gangopadhyay AK, Schilling JS. Pressure dependence of the electronic density of states and Tc in superconducting Rb3C60. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:R9662-R9665. [PMID: 9984786 DOI: 10.1103/physrevb.54.r9662] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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17
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Maniwa Y, Sugiura D, Kume K, Kikuchi K, Suzuki S, Achiba Y, Hirosawa I, Tanigaki K, Shimoda H, Iwasa Y. Determination of 13C NMR isotropic Knight shift and deviation from BCS relation in A3C60 superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:R6861-R6864. [PMID: 9984399 DOI: 10.1103/physrevb.54.r6861] [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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18
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Alexandrov AS, Kabanov VV. Theory of superconducting Tc of doped fullerenes. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:3655-3661. [PMID: 9986274 DOI: 10.1103/physrevb.54.3655] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Iwasa Y, Shimoda H, Palstra TT, Maniwa Y, Zhou O, Mitani T. Metal-insulator transition in ammoniated K3C60. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 53:R8836-R8839. [PMID: 9982464 DOI: 10.1103/physrevb.53.r8836] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Grigoryan LS, Tokumoto M. Evolution of Superconducting and Normal-State Properties in C60“Polymer” Doped with K. ACTA ACUST UNITED AC 1996. [DOI: 10.1080/10641229608001541] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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22
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Hone J, Fuhrer MS, Khazeni K, Zettl A. Electrical-transport measurements of KC60. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:R8700-R8702. [PMID: 9979930 DOI: 10.1103/physrevb.52.r8700] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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23
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Zhou O, Palstra TT, Iwasa Y, Fleming RM, Hebard AF, Sulewski PE, Murphy DW, Zegarski BR. Structural and electronic properties of (NH3)xK3C60. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 52:483-489. [PMID: 9979625 DOI: 10.1103/physrevb.52.483] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Lu L, Crespi VH, Fuhrer MS, Zettl A, Cohen ML. Universal form of Hall coefficient in K and Rb doped single crystal C60. PHYSICAL REVIEW LETTERS 1995; 74:1637-1640. [PMID: 10059079 DOI: 10.1103/physrevlett.74.1637] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Hirosawa I, Kimura H, Mizuki J, Tanigaki K. Locations of Rb ions in A2RbC60 (A=Na,K) superconductors. PHYSICAL REVIEW. B, CONDENSED MATTER 1995; 51:3038-3041. [PMID: 9979085 DOI: 10.1103/physrevb.51.3038] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Mizuki J, Takai M, Takahashi H, Môri N, Tanigaki K, Hirosawa I, Prassides K. Pressure dependence of superconductivity in simple-cubic Na2CsC60. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 50:3466-3469. [PMID: 9976613 DOI: 10.1103/physrevb.50.3466] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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28
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Tersoff J, Ruoff RS. Structural properties of a carbon-nanotube crystal. PHYSICAL REVIEW LETTERS 1994; 73:676-679. [PMID: 10057509 DOI: 10.1103/physrevlett.73.676] [Citation(s) in RCA: 77] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Vareka WA, Zettl A. Linear temperature dependent resistivity at constant volume in Rb3C60. PHYSICAL REVIEW LETTERS 1994; 72:4121-4124. [PMID: 10056387 DOI: 10.1103/physrevlett.72.4121] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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30
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Burk B, Crespi VH, Zettl A, Cohen ML. Rubidium isotope effect in superconducting Rb3C60. PHYSICAL REVIEW LETTERS 1994; 72:3706-3709. [PMID: 10056269 DOI: 10.1103/physrevlett.72.3706] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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31
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Movshovich R, Thompson JD, Chen CC, Lieber CM. Pressure dependence of the superconducting transition temperature in nominal Rb0.5Cs2.5C60. PHYSICAL REVIEW. B, CONDENSED MATTER 1994; 49:3619-3621. [PMID: 10011239 DOI: 10.1103/physrevb.49.3619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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32
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Mitch MG, Lannin JS. Intermolecular Raman scattering in A3C60. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:16192-16195. [PMID: 10008201 DOI: 10.1103/physrevb.48.16192] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Chen G, Guo Y, Karasawa N, Goddard WA. Electron-phonon interactions and superconductivity in K3C60. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:13959-13970. [PMID: 10007797 DOI: 10.1103/physrevb.48.13959] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Jansen L, Chandran L, Block R. Exchange mediated pairing as a source of superconductivity in alkali-doped C60. Chem Phys 1993. [DOI: 10.1016/0301-0104(93)85003-q] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Antropov VP, Gunnarsson O, Liechtenstein AI. Phonons, electron-phonon, and electron-plasmon coupling in C60 compounds. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:7651-7664. [PMID: 10006935 DOI: 10.1103/physrevb.48.7651] [Citation(s) in RCA: 81] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Scherrer H, Stollhoff G. Effects of the electron interaction on the electron-lattice coupling in C60. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:16570-16575. [PMID: 10006094 DOI: 10.1103/physrevb.47.16570] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Poirier DM, Ohno TR, Kroll GH, Benning PJ, Stepniak F, Weaver JH, Chibante LP, Smalley RE. X-ray photoemission investigations of binary and ternary C60 fullerides of Na, K, Rb, and Cs. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:9870-9877. [PMID: 10005060 DOI: 10.1103/physrevb.47.9870] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Huang MZ, Xu YN, Ching WY. Pressure dependence of the band structure, density of states, Fermi surfaces, and optical properties of superconducting K3C60. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:8249-8259. [PMID: 10004837 DOI: 10.1103/physrevb.47.8249] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Wang Y, Tománek D, Bertsch GF, Ruoff RS. Stability of C60 fullerite intercalation compounds. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:6711-6720. [PMID: 10004643 DOI: 10.1103/physrevb.47.6711] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Abstract
Using electronic states and phonon states from the first-principles calculations and including both conventional electron-phonon charge coupling and Jahn-Teller coupling, we predict Tc and other superconducting properties. The only adjustable parameter in the theory is the screening length, Rsc. Using Rsc = 0.8-1.0 A, we find excellent agreement with experiment for Tc (16-18 K), pressure dependence of Tc (Delta Tc = -6 to -10 K for 1 GPa), and 12 C to 13 C isotope shift (alphaC = 0.2); experimental values: 19 K, -7 K, and 0.3, respectively.
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Affiliation(s)
- G Chen
- Materials and Molecular Simulation Center, California Institute of Technology, Pasadena, CA 91125, USA
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Erwin SC, Pickett WE. Theoretical normal-state transport properties of K3C60. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:14257-14260. [PMID: 10003511 DOI: 10.1103/physrevb.46.14257] [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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Yildirim T, Zhou O, Fischer JE, Bykovetz N, Strongin RA, Cichy MA, Smith III AB, Lin CL, Jelinek R. Intercalation of sodium heteroclusters into the C60 lattice. Nature 1992. [DOI: 10.1038/360568a0] [Citation(s) in RCA: 154] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Zheng H, Bennemann K. Calculation of the superconducting critical temperature in doped fullerenes. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:11993-12000. [PMID: 10003097 DOI: 10.1103/physrevb.46.11993] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Huang MZ, Xu YN, Ching WY. Electronic structures of K3C60, RbK2C60, Rb2KC60, Rb3C60, Rb2CsC60, and Cs3C60 crystals. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:6572-6577. [PMID: 10002346 DOI: 10.1103/physrevb.46.6572] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Diederich F, Rubin Y. Synthetic Approaches toward Molecular and Polymeric Carbon Allotropes. ACTA ACUST UNITED AC 1992. [DOI: 10.1002/anie.199211013] [Citation(s) in RCA: 498] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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