Thermopower as sensitive probe of electronic nematicity in iron pnictides

Shuai Jiang; H. S. Jeevan; Jinkui Dong; P. Gegenwart

doi:10.1103/PhysRevLett.110.067001

Thermopower as sensitive probe of electronic nematicity in iron pnictides

Strongly Correlated Electrons 2013-02-15 v2 Superconductivity

Authors: Shuai Jiang , H. S. Jeevan , Jinkui Dong , P. Gegenwart

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Abstract

We study the in-plane anisotropy of the thermoelectric power and electrical resistivity on detwinned single crystals of isovalent substituted EuFe $_{2}$ (As $_{1-x}$ P $_{x}$ ) $_2$ . Compared to the resistivity anisotropy the thermopower anisotropy is more pronounced and clearly visible already at temperatures much above the structural and magnetic phase transitions. Most remarkably, the thermopower anisotropy changes sign below the structural transition. This is associated with the interplay of two contributions due to anisotropic scattering and orbital polarization, which dominate at high- and low-temperatures, respectively.

Keywords

thermopower electronic nematicity iron pnictides anisotropy EuFe2(As1-xPx)2 orbital polarization detwinned single crystals

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@article{arxiv.1210.2634,
  title  = {Thermopower as sensitive probe of electronic nematicity in iron pnictides},
  author = {Shuai Jiang and H. S. Jeevan and Jinkui Dong and P. Gegenwart},
  journal= {arXiv preprint arXiv:1210.2634},
  year   = {2013}
}

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8 pages, including supplemental Material

Thermopower as sensitive probe of electronic nematicity in iron pnictides

Abstract

Keywords

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