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Spin-fermion model with overlapping hot spots and charge modulation in cuprates
Pavel A. Volkov, Konstantin B. Efetov
We study particle-hole instabilities in the framework of the spin-fermion (SF) model. In contrast to previous studies, we assume that adjacent hot spots can overlap due to a shallo…
Chirality and spin transformation of triplet Cooper pairs upon interaction with singlet condensate
Andreas Moor, Anatoly F. Volkov, Konstantin B. Efetov
We show that the fully polarized triplet s-wave component is characterized not only by the spin direction, but also by chirality. Interaction of a polarized triplet component and a…
Nematic versus ferromagnetic spin filtering of triplet Cooper pairs in superconducting spintronics
Andreas Moor, Anatoly F. Volkov, Konstantin B. Efetov
We consider two types of magnetic Josephson junctions~(JJ). They are formed by two singlet superconductors~S and magnetic layers between them so that the JJ is a heterostructure of…
Specular Interband Andreev Reflections in Graphene
D. K. Efetov, L. Wang, C. Handschin +8
Electrons incident from a normal metal onto a superconductor are reflected back as holes - a process called Andreev reflection. In a normal metal where the Fermi energy is much lar…
Hidden Order as a Source of Interface Superconductivity
Andreas Moor, Anatoly F. Volkov, Konstantin B. Efetov
Interfacial superconductivity is observed in a variety of heterostructures composed of different materials including superconducting and nonsuperconducting (at appropriate doping a…
Spin Current in Junctions composed of Multi-band Superconductors with a Spin-density Wave
Andreas Moor, Anatoly F. Volkov, Konstantin B. Efetov
We calculate a nondissipative spin current and show that it can flow with or without a charge current. We consider a two-band model which can be applied to the description of Fe-ba…