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Title: Critical divergence of the symmetric ( A 1 g ) nonlinear elastoresistance near the nematic transition in an iron-based superconductor

Abstract

We report the observation of a nonlinear elastoresistivity response for the prototypical underdoped iron pnictide Ba(Fe 0.975Co 0.025) 2As 2. Our measurements reveal a large quadratic term in the isotropic (A 1g) electronic response that was produced by a purely shear (B 2g) strain. The divergence of this quantity upon cooling towards the structural phase transition reflects the temperature dependence of the nematic susceptibility. Furthermore, this observation shows that nematic fluctuations play a significant role in determining even the isotropic properties of this family of compounds.

Authors:
 [1];  [2];  [2];  [3];  [1]
  1. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., Stanford, CA (United States)
  3. Univ. of Washington, Seattle, WA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1418208
Alternate Identifier(s):
OSTI ID: 1409232; OSTI ID: 1458473
Grant/Contract Number:  
DGE-114747; AC02-76SF00515
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 96; Journal Issue: 20; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Palmstrom, J. C., Hristov, A. T., Kivelson, S. A., Chu, J. -H., and Fisher, I. R.. Critical divergence of the symmetric (A1g) nonlinear elastoresistance near the nematic transition in an iron-based superconductor. United States: N. p., 2017. Web. doi:10.1103/PhysRevB.96.205133.
Palmstrom, J. C., Hristov, A. T., Kivelson, S. A., Chu, J. -H., & Fisher, I. R.. Critical divergence of the symmetric (A1g) nonlinear elastoresistance near the nematic transition in an iron-based superconductor. United States. doi:10.1103/PhysRevB.96.205133.
Palmstrom, J. C., Hristov, A. T., Kivelson, S. A., Chu, J. -H., and Fisher, I. R.. Fri . "Critical divergence of the symmetric (A1g) nonlinear elastoresistance near the nematic transition in an iron-based superconductor". United States. doi:10.1103/PhysRevB.96.205133.
@article{osti_1418208,
title = {Critical divergence of the symmetric (A1g) nonlinear elastoresistance near the nematic transition in an iron-based superconductor},
author = {Palmstrom, J. C. and Hristov, A. T. and Kivelson, S. A. and Chu, J. -H. and Fisher, I. R.},
abstractNote = {We report the observation of a nonlinear elastoresistivity response for the prototypical underdoped iron pnictide Ba(Fe0.975Co0.025)2As2. Our measurements reveal a large quadratic term in the isotropic (A1g) electronic response that was produced by a purely shear (B2g) strain. The divergence of this quantity upon cooling towards the structural phase transition reflects the temperature dependence of the nematic susceptibility. Furthermore, this observation shows that nematic fluctuations play a significant role in determining even the isotropic properties of this family of compounds.},
doi = {10.1103/PhysRevB.96.205133},
journal = {Physical Review B},
number = 20,
volume = 96,
place = {United States},
year = {Fri Nov 17 00:00:00 EST 2017},
month = {Fri Nov 17 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on November 17, 2018
Publisher's Version of Record

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Cited by: 1 work
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