Campus Units

Physics and Astronomy, Ames Laboratory

Document Type

Article

Publication Version

Published Version

Publication Date

9-16-2016

Journal or Book Title

Physical Review Letters

Volume

117

Issue

12

First Page

127001

DOI

10.1103/PhysRevLett.117.127001

Abstract

The in-plane resistivity anisotropy is studied in strain-detwinned single crystals of FeSe. In contrast to other iron-based superconductors, FeSe does not develop long-range magnetic order below the tetragonal-to-orthorhombic transition at Ts≈90  K. This allows for the disentanglement of the contributions to the resistivity anisotropy due to nematic and magnetic orders. Comparing direct transport and elastoresistivity measurements, we extract the intrinsic resistivity anisotropy of strain-free samples. The anisotropy peaks slightly below Ts and decreases to nearly zero on cooling down to the superconducting transition. This behavior is consistent with a scenario in which the in-plane resistivity anisotropy is dominated by inelastic scattering by anisotropic spin fluctuations.

Comments

This article is published as Tanatar, M. A., A. E. Böhmer, E. I. Timmons, M. Schütt, G. Drachuck, V. Taufour, K. Kothapalli, A. Kreyssig, S. L. Bud’ko, P. C. Canfield, R. M. Fernandes, and R. Prozorov. "Origin of the resistivity anisotropy in the nematic phase of FeSe." Physical Review Letters 117, no. 12 (2016): 127001. DOI: 10.1103/PhysRevLett.117.127001. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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