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Title: Interface Superconductivity in Cuprates Defies Fermi-Liquid Description

Abstract

La 2-xSr xCuO 4/La 2CuO 4 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, T c ≈ 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:
 [1];  [1];  [2];  [2];  [3]
  1. Univ. of Belgrade, Belgrade (Serbia). Dept. of Physics
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Division
  3. 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:
Journal Article: 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},
url = {https://www.osti.gov/biblio/1303001}, journal = {Journal of Superconductivity and Novel Magnetism},
issn = {1557-1939},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {7}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Works referenced in this record:

Frequency and magnetic-field dependence of the dielectric constant and conductivity of La 2 CuO 4 + y
journal, January 1991


Anomalous independence of interface superconductivity from carrier density
journal, August 2013


de Haas–van Alphen Oscillations in the Underdoped High-Temperature Superconductor YBa 2 Cu 3 O 6.5
journal, May 2008


Atomic-layer synthesis and imaging uncover broken inversion symmetry in La 2 x Sr x CuO 4 films
journal, January 2013


Strongly Correlated Materials: Insights From Dynamical Mean-Field Theory
journal, March 2004


High-Temperature Superconductivity in a Single Copper-Oxygen Plane
journal, October 2009


High-temperature interface superconductivity between metallic and insulating copper oxides
journal, October 2008


Superconductor–insulator transition in La2 − xSr x CuO4 at the pair quantum resistance
journal, April 2011


Superconducting oxide multilayers and superlattices: Physics, chemistry, and nanoengineering
journal, December 1994


Evidence for polaronic supercarriers in the copper oxide superconductors La2–xSrxCuO4
journal, January 1997


Quantum oscillations and the Fermi surface in an underdoped high-Tc superconductor
journal, May 2007


Dependence of the critical temperature in overdoped copper oxides on superfluid density
journal, August 2016


Pinning the critical temperature
journal, September 2013


Microwave spectroscopy of thermally excited quasiparticles in YBa 2 Cu 3 O 6.99
journal, July 1999


Making high Tc higher: a theoretical proposal
journal, May 2002


Signatures of mesoscopic Jahn Teller polaron inhomogeneities in high-temperature superconductors
journal, February 2003


Atomic-layer engineering of superconducting oxides: yesterday, today, tomorrow
journal, March 2001


Study of optical plasmons in La1.85Sr0.15Cu2O4
journal, March 1991


Chemical Potential Shift in Overdoped and Underdoped La 2 x Sr x CuO 4
journal, September 1997


Epitaxial Strain and Superconductivity in L a 2 x S r x C u O 4 Thin Films
journal, August 2002


No mixing of superconductivity and antiferromagnetism in a high-temperature superconductor
journal, April 2003


Growth of superconducting Bi2Sr2Can−1CunOx thin films by atomically layered epitaxy
journal, May 1991