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Title: Scaling of the Stress and Temperature Dependence of the Optical Anisotropy in Ba(Fe 1-x Co x ) 2As 2

Abstract

We revisit our recent investigations of the optical properties in the underdoped regime of the title compounds with respect to their anisotropic behavior as a function of both temperature and uniaxial stress across the ferro-elastic tetragonal-to-orthorhombic transition. By exploiting a dedicated pressure device, we can tune and control uniaxial stress in situ thus changing the degree of detwinning of the samples in the orthorhombic SDW state as well as pressure-inducing an orthorhombicity in the paramagnetic tetragonal phase. Here we discover a hysteretic behavior of the optical anisotropy; its stress versus temperature dependence across the structural transition bears testimony to the analogy with the magnetic-field versus temperature dependence of the magnetization in a ferromagnet when crossing the Curie temperature. In this context, we find furthermore an intriguing scaling of the stress and temperature dependence of the optical anisotropy in Ba(Fe 1-xCo x) 2As 2.

Authors:
 [1];  [1];  [1];  [2];  [2];  [2];  [1]
  1. Federal Inst. of Technology, Zurich (Switzerland). Laboratorium fur Festkorperphysik
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials; Stanford Univ., CA (United States). Dept. of Applied Physics
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Swiss National Science Foundation (SNSF)
OSTI Identifier:
1361130
Grant/Contract Number:
AC02-76SF00515
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Superconductivity and Novel Magnetism
Additional Journal Information:
Journal Volume: 29; Journal Issue: 12; Journal ID: ISSN 1557-1939
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Iron-pnictide superconductors; Nematic phase; Optical properties

Citation Formats

Mirri, C., Dusza, A., Bastelberger, S., Chu, J. -H., Kuo, H. -H., Fisher, I. R., and Degiorgi, L. Scaling of the Stress and Temperature Dependence of the Optical Anisotropy in Ba(Fe1-x Co x )2As2. United States: N. p., 2016. Web. doi:10.1007/s10948-016-3773-y.
Mirri, C., Dusza, A., Bastelberger, S., Chu, J. -H., Kuo, H. -H., Fisher, I. R., & Degiorgi, L. Scaling of the Stress and Temperature Dependence of the Optical Anisotropy in Ba(Fe1-x Co x )2As2. United States. doi:10.1007/s10948-016-3773-y.
Mirri, C., Dusza, A., Bastelberger, S., Chu, J. -H., Kuo, H. -H., Fisher, I. R., and Degiorgi, L. 2016. "Scaling of the Stress and Temperature Dependence of the Optical Anisotropy in Ba(Fe1-x Co x )2As2". United States. doi:10.1007/s10948-016-3773-y. https://www.osti.gov/servlets/purl/1361130.
@article{osti_1361130,
title = {Scaling of the Stress and Temperature Dependence of the Optical Anisotropy in Ba(Fe1-x Co x )2As2},
author = {Mirri, C. and Dusza, A. and Bastelberger, S. and Chu, J. -H. and Kuo, H. -H. and Fisher, I. R. and Degiorgi, L.},
abstractNote = {We revisit our recent investigations of the optical properties in the underdoped regime of the title compounds with respect to their anisotropic behavior as a function of both temperature and uniaxial stress across the ferro-elastic tetragonal-to-orthorhombic transition. By exploiting a dedicated pressure device, we can tune and control uniaxial stress in situ thus changing the degree of detwinning of the samples in the orthorhombic SDW state as well as pressure-inducing an orthorhombicity in the paramagnetic tetragonal phase. Here we discover a hysteretic behavior of the optical anisotropy; its stress versus temperature dependence across the structural transition bears testimony to the analogy with the magnetic-field versus temperature dependence of the magnetization in a ferromagnet when crossing the Curie temperature. In this context, we find furthermore an intriguing scaling of the stress and temperature dependence of the optical anisotropy in Ba(Fe1-xCox)2As2.},
doi = {10.1007/s10948-016-3773-y},
journal = {Journal of Superconductivity and Novel Magnetism},
number = 12,
volume = 29,
place = {United States},
year = 2016,
month = 9
}

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