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Title: Josephson Scanning Tunneling Spectroscopy in d x 2 - y 2 -Wave Superconductors: A Probe for the Nature of the Pseudogap in the Cuprate Superconductors

Abstract

Recent advances in the development of Josephson scanning tunneling spectroscopy (JSTS) have opened a new path for the exploration of unconventional superconductors. We demonstrate that the critical current I c , measured via JSTS, images the spatial form of the superconducting order parameter in d x 2 - y 2 -wave superconductors around defects and in the Fulde-Ferrell-Larkin-Ovchinnikov state. Furthermore, we show that I c probes the existence of phase-incoherent superconducting correlations in the pseudogap region of the cuprate superconductors, thus providing unprecedented insight into its elusive nature. These findings offer the missing theoretical link between the experimentally measured I c and the spatial structure of the superconducting order parameter.

Authors:
 [1]; ORCiD logo [1]
  1. Univ. of Illinois, Chicago, IL (United States)
Publication Date:
Research Org.:
Univ. of Illinois, Chicago, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1593518
Alternate Identifier(s):
OSTI ID: 1530637
Grant/Contract Number:  
FG02-05ER46225
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 123; Journal Issue: 1; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Graham, Martin, and Morr, Dirk K. Josephson Scanning Tunneling Spectroscopy in dx2-y2 -Wave Superconductors: A Probe for the Nature of the Pseudogap in the Cuprate Superconductors. United States: N. p., 2019. Web. doi:10.1103/PhysRevLett.123.017001.
Graham, Martin, & Morr, Dirk K. Josephson Scanning Tunneling Spectroscopy in dx2-y2 -Wave Superconductors: A Probe for the Nature of the Pseudogap in the Cuprate Superconductors. United States. doi:10.1103/PhysRevLett.123.017001.
Graham, Martin, and Morr, Dirk K. Tue . "Josephson Scanning Tunneling Spectroscopy in dx2-y2 -Wave Superconductors: A Probe for the Nature of the Pseudogap in the Cuprate Superconductors". United States. doi:10.1103/PhysRevLett.123.017001.
@article{osti_1593518,
title = {Josephson Scanning Tunneling Spectroscopy in dx2-y2 -Wave Superconductors: A Probe for the Nature of the Pseudogap in the Cuprate Superconductors},
author = {Graham, Martin and Morr, Dirk K.},
abstractNote = {Recent advances in the development of Josephson scanning tunneling spectroscopy (JSTS) have opened a new path for the exploration of unconventional superconductors. We demonstrate that the critical current Ic, measured via JSTS, images the spatial form of the superconducting order parameter in dx2-y2-wave superconductors around defects and in the Fulde-Ferrell-Larkin-Ovchinnikov state. Furthermore, we show that Ic probes the existence of phase-incoherent superconducting correlations in the pseudogap region of the cuprate superconductors, thus providing unprecedented insight into its elusive nature. These findings offer the missing theoretical link between the experimentally measured Ic and the spatial structure of the superconducting order parameter.},
doi = {10.1103/PhysRevLett.123.017001},
journal = {Physical Review Letters},
number = 1,
volume = 123,
place = {United States},
year = {2019},
month = {7}
}

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