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Title: Multi-band effects in in-plane resistivity anisotropy of strain-detwinned disordered Ba(Fe1–xRux)2As2

Abstract

In-plane resistivity anisotropy was measured in strain-detwinned as-grown and partially annealed samples of isovalently-substituted Ba(Fe1-xRux)2As2 (0 < x $$\leqslant$$ 0.125) and the results were contrasted with previous reports on anneal samples with low residual resistivity. In samples with high residual resistivity, detwinned with application of strain, the difference of the two components of in-plane resistivity in the orthorhombic phase, pa-pb, was found to obey Matthiessen rule irrespective of sample composition, which is in stark contrast with observations on annealed samples. Our findings are consistent with two-band transport model in which contribution from high mobility carriers of small pockets of the Fermi surface has negligible anisotropy of residual resistivity and is eliminated by disorder. Our finding suggests that magnetic/nematic order has dramatically different effect on different parts of the Fermi surface. In conclusion, it predominantly affects inelastic scattering for small pocket high mobility carriers and elastic impurity scattering for larger sheets of the Fermi surface.

Authors:
 [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy
Publication Date:
Research Org.:
Ames Lab., Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
OSTI Identifier:
1483370
Report Number(s):
IS-J-9717
Journal ID: ISSN 0953-8984
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Physics. Condensed Matter
Additional Journal Information:
Journal Volume: 30; Journal Issue: 31; Journal ID: ISSN 0953-8984
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Blomberg, E. C., Tanatar, M. A., Tanatar, M. A., Bud’ko, S. L., Canfield, P. C., and Prozorov, R. Multi-band effects in in-plane resistivity anisotropy of strain-detwinned disordered Ba(Fe1–xRux)2As2. United States: N. p., 2018. Web. doi:10.1088/1361-648X/aacf2e.
Blomberg, E. C., Tanatar, M. A., Tanatar, M. A., Bud’ko, S. L., Canfield, P. C., & Prozorov, R. Multi-band effects in in-plane resistivity anisotropy of strain-detwinned disordered Ba(Fe1–xRux)2As2. United States. https://doi.org/10.1088/1361-648X/aacf2e
Blomberg, E. C., Tanatar, M. A., Tanatar, M. A., Bud’ko, S. L., Canfield, P. C., and Prozorov, R. Wed . "Multi-band effects in in-plane resistivity anisotropy of strain-detwinned disordered Ba(Fe1–xRux)2As2". United States. https://doi.org/10.1088/1361-648X/aacf2e. https://www.osti.gov/servlets/purl/1483370.
@article{osti_1483370,
title = {Multi-band effects in in-plane resistivity anisotropy of strain-detwinned disordered Ba(Fe1–xRux)2As2},
author = {Blomberg, E. C. and Tanatar, M. A. and Tanatar, M. A. and Bud’ko, S. L. and Canfield, P. C. and Prozorov, R.},
abstractNote = {In-plane resistivity anisotropy was measured in strain-detwinned as-grown and partially annealed samples of isovalently-substituted Ba(Fe1-xRux)2As2 (0 < x $\leqslant$ 0.125) and the results were contrasted with previous reports on anneal samples with low residual resistivity. In samples with high residual resistivity, detwinned with application of strain, the difference of the two components of in-plane resistivity in the orthorhombic phase, pa-pb, was found to obey Matthiessen rule irrespective of sample composition, which is in stark contrast with observations on annealed samples. Our findings are consistent with two-band transport model in which contribution from high mobility carriers of small pockets of the Fermi surface has negligible anisotropy of residual resistivity and is eliminated by disorder. Our finding suggests that magnetic/nematic order has dramatically different effect on different parts of the Fermi surface. In conclusion, it predominantly affects inelastic scattering for small pocket high mobility carriers and elastic impurity scattering for larger sheets of the Fermi surface.},
doi = {10.1088/1361-648X/aacf2e},
journal = {Journal of Physics. Condensed Matter},
number = 31,
volume = 30,
place = {United States},
year = {Wed Aug 08 00:00:00 EDT 2018},
month = {Wed Aug 08 00:00:00 EDT 2018}
}

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Works referencing / citing this record:

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