Wave function for odd-frequency superconductors
نویسندگان
چکیده
منابع مشابه
Anomalous Josephson effect between even- and odd-frequency superconductors.
We demonstrate that, contrary to standard wisdom, the lowest-order Josephson coupling is possible between odd- and even-frequency superconductors. The origin of this effect is the induced odd- (even-)frequency pairing component at the interface of bulk even- (odd-)frequency superconductors. The resulting current-phase relation is found to be proportional to cosphi, where phi is the macroscopic ...
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It is now well established that at a superconductor/ferromagnet (S/F) interface an unconventional superconducting state arises in which the pairing is odd-frequency. The hallmark signature of this superconducting state is generally understood to be an enhancement of the electronic density of states (DoS) at subgap energies close to the S/F interface. However, here we show that an odd frequency ...
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A class of singlet superconductors with a gap function ∆(k, ωn) which is odd in both momentum and Matsubara frequency was proposed recently [1]. To show an instability in the odd gap channel, a model phonon propagator was used with the p-wave interaction strength larger than the s-wave. We argue that the positive scattering matrix element entering the Eliashberg equations leads to a constraint ...
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The tunneling conductance spectra of a normal metal / insulator / singlet superconductor is calculated from the reflection amplitudes using the BlonderTinkham-Klapwijk (BTK) formulation. The pairing symmetry of the superconductor is assumed to be dx2−y2 + is, or dx2−y2 + idxy. It is found that in the (dx2−y2 + is)-wave case there is a well defined conductance peak in the conductance spectra, in...
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Group theory arguments have demonstrated that a general odd parity order parameter cannot have line nodes in the presence of spin-orbit coupling. In this paper, it is shown that these arguments do not hold on the kz = π/c zone face of a hexagonal close packed lattice. In particular, three of the six odd parity representations vanish identically on this face. This has potential relevance to the ...
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ژورنال
عنوان ژورنال: New Journal of Physics
سال: 2009
ISSN: 1367-2630
DOI: 10.1088/1367-2630/11/6/065005