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Title: Universal features in the photoemission spectroscopy of high-temperature superconductors

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1123647
Report Number(s):
BNL-103739-2014-JA
R&D Project: PO-010; KC0202010
DOE Contract Number:
DE-AC02-98CH10886
Resource Type:
Journal Article
Resource Relation:
Journal Name: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA; Journal Volume: 110; Journal Issue: 44
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Zhao J., Gu G., Zhao, Junjing, Chatterjee, Utpal, Ai, Dingfei, Hinks, D., Zheng, H., Gu, G., Castellan, J., Rosenkranz, S., Claus, H., Norman, M., Randeria, M., and Campuzano, J. Universal features in the photoemission spectroscopy of high-temperature superconductors. United States: N. p., 2013. Web. doi:10.1073/pnas.1302932110.
Zhao J., Gu G., Zhao, Junjing, Chatterjee, Utpal, Ai, Dingfei, Hinks, D., Zheng, H., Gu, G., Castellan, J., Rosenkranz, S., Claus, H., Norman, M., Randeria, M., & Campuzano, J. Universal features in the photoemission spectroscopy of high-temperature superconductors. United States. doi:10.1073/pnas.1302932110.
Zhao J., Gu G., Zhao, Junjing, Chatterjee, Utpal, Ai, Dingfei, Hinks, D., Zheng, H., Gu, G., Castellan, J., Rosenkranz, S., Claus, H., Norman, M., Randeria, M., and Campuzano, J. 2013. "Universal features in the photoemission spectroscopy of high-temperature superconductors". United States. doi:10.1073/pnas.1302932110.
@article{osti_1123647,
title = {Universal features in the photoemission spectroscopy of high-temperature superconductors},
author = {Zhao J. and Gu G. and Zhao, Junjing and Chatterjee, Utpal and Ai, Dingfei and Hinks, D. and Zheng, H. and Gu, G. and Castellan, J. and Rosenkranz, S. and Claus, H. and Norman, M. and Randeria, M. and Campuzano, J.},
abstractNote = {},
doi = {10.1073/pnas.1302932110},
journal = {PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA},
number = 44,
volume = 110,
place = {United States},
year = 2013,
month =
}
  • A comprehensive analysis is presented of the tunneling conductance and angle-resolved photoemission spectra in high-temperature superconductors. It is shown that unexplained features of the tunneling and photoemission spectra such as broad backgrounds, dips, and asymmetry of the tunneling conductance can arise in a model of spin-fluctuation mediated inelastic tunneling. Effects of directionality in tunneling play an important role in determining the behavior of the tunneling conductance. {copyright} {ital 1996 The American Physical Society.}
  • We present an overview of the electronic properties of iron arsenic high temperature superconductors with emphasis on low energy band dispersion, Fermi surface and superconducting gap. ARPES data is compared with full-potential linearized plane wave (FLAPW) calculations. We focus on single layer NdFe-AsO{sub 0.9}F{sub 0.1} (R1111) and two layer Ba{sub 1-x}K{sub x}Fe{sub 2}As{sub 2} (B122) compounds. We find general similarities between experimental data and calculations in terms of character of Fermi surface pockets, and overall band dispersion. We also find a number of differences in details of the shape and size of the Fermi surfaces as well as the exactmore » energy location of the bands, which indicate that magnetic interaction and ordering significantly affects the electronic properties of these materials. The Fermi surface consists of several hole pockets centered at {tau} and electron pockets located in zone corners. The size and shape of the Fermi surface changes significantly with doping. Emergence of a coherent peak below the critical temperature T{sub c} and diminished spectral weight at the chemical potential above T{sub c} closely resembles the spectral characteristics of the cuprates, however the nodeless superconducting gap clearly excludes the possibility of dwave order parameter. Instead it points to s-wave or extended s-wave symmetry of the order parameter.« less
  • It is shown that basic properties of the nonlinear response of high-temperature superconductors (HTSCs) observed in femtosecond and picosecond pump-probe experiments at high and low pump levels in various variants of the pump-probe spectroscopy, including one- and two-photon excited-state probing, can be interpreted by using two assumptions. The spectral and temperature properties of the HTSC response at low pump levels can be explained taking into account the contributions from interband electronic transitions to the dielectric constant. At the same time, drastic variations in the HTSC response kinetics (temporal features) observed at high pump levels (for a typical pump pulse energymore » of {approx}10{sup -7} J in a focal spot of diameter 150 {mu}m) can be explained by assuming the existence of a 'frozen' (metastable) energy gap in the electronic spectrum of a HTSC. In this case, all the conditions required for the interpretation of a drastic decrease in the relaxation rate of a nonlinear response (degeneracy) are realised due to the specific distribution of the electronic state density immediately after the formation of the energy gap in the electronic spectrum of the HTSC. (review)« less