Generic nodeless Larkin Ovchinnikov states due to singlet-triplet mixing - Condensed Matter > SuperconductivityReportar como inadecuado




Generic nodeless Larkin Ovchinnikov states due to singlet-triplet mixing - Condensed Matter > Superconductivity - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: Larkin-Ovchinnikov LO states typically have a singlet-gap that vanishesalong real-space lines. These real-space nodes lead to Andreev midgap stateswhich can serve as a signature of LO pairing. We show that at these nodes, anodd-parity, spin-triplet component is always induced, leading to a nodeless LOphase. We find the two-dimensional weak coupling, clean limit s-wave phasediagram when this spin-triplet part is included. The triplet component is largeand increases the stability of the FFLO phase. We also show that thespin-triplet contribution pushes the midgap states away from zero energy.Finally, we show how our results can be explained phenomenologically thoughLifshitz invariants. These invariants provide a simple approach to understandthe role of unconventional pairing states, spin-orbit coupling, andinhomogeneous mixed singlet-triplet states that are not due to a FFLOinstability. We discuss our results in the context of organic superconductors.



Autor: Z. Zheng, D.F. Agterberg

Fuente: https://arxiv.org/



DESCARGAR PDF




Documentos relacionados