Interface Superconductivity in Cuprates Defies Fermi-Liquid Description
Abstract
La2-xSrxCuO4/La2CuO4 bilayers show interface superconductivity that originates from accumulation and depletion of mobile charge carriers across the interface. Surprisingly, the doping level can be varied broadly (within the interval 0.15 < x < 0.47) without affecting the transition temperature, which stays essentially constant and equal to that in optimally doped material, Tc ≈ 40 K. Here we argue that this finding implies that doping up to the optimum level does not shift the chemical potential, unlike in ordinary Fermi liquids. Lastly, we discuss possible physical scenarios that can give doping-independent chemical potential in the pseudogap regime: electronic phase separation, formation of charge-density waves, strong Coulomb interactions, or self-trapping of mobile charge carriers.
- Authors:
-
- Univ. of Belgrade, Belgrade (Serbia). Dept. of Physics
- Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Division
- Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Division; Yale Univ., New Haven, CT (United States). Applied Physics Dept.
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1303001
- Report Number(s):
- BNL-112451-2016-JA
Journal ID: ISSN 1557-1939; R&D Project: MA509MACA; KC0203020
- Grant/Contract Number:
- SC00112704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Superconductivity and Novel Magnetism
- Additional Journal Information:
- Journal Name: Journal of Superconductivity and Novel Magnetism; Journal ID: ISSN 1557-1939
- Publisher:
- Springer
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; High-temperature superconductors; Interface superconductivity; Chemical potential; Fermi liquid
Citation Formats
Radović, Zoran, Vanević, Mihajlo, Wu, Jie, Bollinger, Anthony T., and Božović, Ivan. Interface Superconductivity in Cuprates Defies Fermi-Liquid Description. United States: N. p., 2016.
Web. doi:10.1007/s10948-016-3636-6.
Radović, Zoran, Vanević, Mihajlo, Wu, Jie, Bollinger, Anthony T., & Božović, Ivan. Interface Superconductivity in Cuprates Defies Fermi-Liquid Description. United States. https://doi.org/10.1007/s10948-016-3636-6
Radović, Zoran, Vanević, Mihajlo, Wu, Jie, Bollinger, Anthony T., and Božović, Ivan. Tue .
"Interface Superconductivity in Cuprates Defies Fermi-Liquid Description". United States. https://doi.org/10.1007/s10948-016-3636-6. https://www.osti.gov/servlets/purl/1303001.
@article{osti_1303001,
title = {Interface Superconductivity in Cuprates Defies Fermi-Liquid Description},
author = {Radović, Zoran and Vanević, Mihajlo and Wu, Jie and Bollinger, Anthony T. and Božović, Ivan},
abstractNote = {La2-xSrxCuO4/La2CuO4 bilayers show interface superconductivity that originates from accumulation and depletion of mobile charge carriers across the interface. Surprisingly, the doping level can be varied broadly (within the interval 0.15 < x < 0.47) without affecting the transition temperature, which stays essentially constant and equal to that in optimally doped material, Tc ≈ 40 K. Here we argue that this finding implies that doping up to the optimum level does not shift the chemical potential, unlike in ordinary Fermi liquids. Lastly, we discuss possible physical scenarios that can give doping-independent chemical potential in the pseudogap regime: electronic phase separation, formation of charge-density waves, strong Coulomb interactions, or self-trapping of mobile charge carriers.},
doi = {10.1007/s10948-016-3636-6},
journal = {Journal of Superconductivity and Novel Magnetism},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 26 00:00:00 EDT 2016},
month = {Tue Jul 26 00:00:00 EDT 2016}
}
Web of Science
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Works referencing / citing this record:
Design of Complex Oxide Interfaces by Oxide Molecular Beam Epitaxy
journal, October 2019
- Suyolcu, Y. E.; Christiani, G.; van Aken, P. A.
- Journal of Superconductivity and Novel Magnetism, Vol. 33, Issue 1