Hints for the nematic pseudogap in the nearly optimally doped La2 -xSrxCu O4 superconductor
Abstract
The in-plane anisotropy of the Seebeck (S ) and Nernst (ν) coefficients of the nearly optimally doped cuprate superconductor La1.86Sr0.14Cu O4 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.
- Publication:
-
Physical Review Research
- Pub Date:
- September 2020
- DOI:
- 10.1103/PhysRevResearch.2.032070
- Bibcode:
- 2020PhRvR...2c2070M