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Hints for the nematic pseudogap in the nearly optimally doped La2−xSrxCuO4 superconductor

Marcin Matusiak, Tadashi Adachi, Yoichi Tanabe, Yoji Koike

DOI 10.1103/PhysRevResearch.2.032070 · Physical Review Research

T1

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Abstract

The in-plane anisotropy of the Seebeck (S) and Nernst (ν) coefficients of the nearly optimally doped cuprate superconductor La1.86Sr0.14CuO4 was measured under uniaxial pressure. Regardless of the qualitative differences between the S(T) and ν(T) dependences, both the Seebeck and Nernst anisotropies evolve very similarly with temperature. Namely, they emerge slightly above the structural transition, then change their character, and eventually sign at the temperature close to the temperature of the pseudogap formation. We conclude that the pseudogap possibly breaks rotational symmetry and we indicate an important role played in this phase by small-angle inelastic scattering.

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FormulaReported Tc (K)Pressure (GPa)Type
La1.86Sr0.14CuO4

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—Pressure not reportedunknown

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