Anisotropy of Electrical Transport in Pnictide Superconductors Studied Using Monte Carlo Simulations of the Spin-Fermion Model

Liang, Shuhua; Alvarez, Gonzalo; Sen, Cengiz; Moreo, Adriana; Dagotto, Elbio R

doi:10.1103/PhysRevLett.109.047001

Title: Anisotropy of Electrical Transport in Pnictide Superconductors Studied Using Monte Carlo Simulations of the Spin-Fermion Model

Journal Article · Sun Jan 01 00:00:00 EST 2012 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.109.047001· OSTI ID:1055156

Liang, Shuhua ^[1]; Alvarez, Gonzalo ^[1]; Sen, Cengiz ^[1]; Moreo, Adriana ^[1]; Dagotto, Elbio R ^[1]

ORNL

An undoped three-orbital spin-fermion model for the Fe-based superconductors is studied via Monte Carlo techniques in two-dimensional clusters. At low temperatures, the magnetic and one-particle spectral properties are in agreement with neutron and photoemission experiments. Our main results are the resistance versus temperature curves that display the same features observed in BaFe2As2 detwinned single crystals (under uniaxial stress), including a low-temperature anisotropy between the two directions followed by a peak at the magnetic ordering temperature, that qualitatively appears related to short-range spin order and concomitant Fermi surface orbital order.

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Research Organization:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)

Sponsoring Organization:: USDOE Office of Science (SC)

DOE Contract Number:: DE-AC05-00OR22725

OSTI ID:: 1055156

Journal Information:: Physical Review Letters, Vol. 109, Issue 4; ISSN 0031-9007

Country of Publication:: United States

Language:: English

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