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Yokoyama, T. (author), Reutlinger, Johannes (author), Belzig, Wolfgang (author), Nazarov, Y.V. (author)
We consider the spectrum of Andreev bound states (ABSs) in an exemplary four-terminal superconducting structure where four chaotic cavities are connected by quantum point contacts to the terminals and to each other forming a ring. We nickname the resulting device 4T-ring. Such a tunable device can be realized in a 2D electron gas...
journal article 2017
document
Yokoyama, T. (author), Eto, M. (author), Nazarov, Y.V. (author)
We study theoretically the critical current in semiconductor nanowire Josephson junction with strong spin-orbit interaction. The critical current oscillates with an external magnetic field. We reveal that the oscillation of critical current depends on the orientation of magnetic field in the presence of spin-orbit interaction. We perform a...
journal article 2014
document
Yokoyama, T. (author), Eto, M. (author), Nazarov, Y.V. (author)
We investigate theoretically the Josephson junction of semiconductor nanowire with strong spin-orbit (SO) interaction in the presence of magnetic field. By using a tight-binding model, the energy levels En of Andreev bound states are numerically calculated as a function of phase difference ? between two superconductors in the case of short...
journal article 2014
document
Yokoyama, T. (author), Eto, M. (author), Nazarov, Y.V. (author)
We theoretically study the current-phase relation in semiconductor nanowire Josephson junction in the presence of spin-orbit interaction. In the nanowire, the impurity scattering with strong SO interaction is taken into account using the random matrix theory. In the absence of magnetic field, the Josephson current I and phase difference ?...
conference paper 2012
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