Role of nematic fluctuations in the thermal melting of pair-density-wave phases in two-dimensional superconductors

Daniel G. Barci; Eduardo Fradkin

doi:10.1103/PhysRevB.83.100509

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Role of nematic fluctuations in the thermal melting of pair-density-wave phases in two-dimensional superconductors

Daniel G. Barci, Eduardo Fradkin

DOI 10.1103/PhysRevB.83.100509 · Physical Review B

T1

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Abstract

We study properties of phase transitions of two-dimensional superconductor liquid crystal phases, and analyze the competition between the recently proposed pair density wave (PDW) and nematic 4e superconductor (4e SC). Nematic fluctuations enhance the 4e SC and suppress the PDW phase. In the absence of lattice effects, the PDW state exists only at T=0 and the low-temperature phase is a nematic 4e SC with short-ranged PDW order. A geometric description of the 4e SC is presented.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
La2-xBaxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
La1.6-xNd0.4SrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown