Search results for "Josephson weak links"

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Intrinsic spin-orbit interaction in diffusive normal wire Josephson weak links: Supercurrent and density of states

2015

We study the effect of the intrinsic (Rashba or Dresselhaus) spin-orbit interaction in superconductor--nanowire--superconductor (SNS) weak links in the presence of a spin-splitting field that can result either from an intrinsic exchange field or the Zeeman effect of an applied field. We solve the full non-linear Usadel equations numerically and analyze the resulting supercurrent through the weak link and the behavior of the density of states in the center of the wire. We point out how the presence of the spin-orbit interaction gives rise to a long-range spin triplet supercurrent, which remains finite even in the limit of very large exchange fields. In particular, we show how rotating the fi…

intrinsic spin-orbit interactionField (physics)ta221Josephson weak linksFOS: Physical sciences02 engineering and technologysuperconductors01 natural sciencesSuperconductivity (cond-mat.supr-con)symbols.namesakeCondensed Matter::SuperconductivityQuantum mechanics0103 physical sciences010306 general physicssupercurrentSpin-½SuperconductivityPhysicsZeeman effectta114Condensed matter physicsCondensed Matter - SuperconductivitySupercurrentSpin–orbit interactionCondensed Matter::Mesoscopic Systems and Quantum Hall Effect021001 nanoscience & nanotechnologynanowiresPairingDensity of statessymbols0210 nano-technologyPhysical Review B
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Intrinsic spin-orbit interaction in diffusive normal wire Josephson weak links: Supercurrent and density of states

2016

We study the effect of the intrinsic (Rashba or Dresselhaus) spin-orbit interaction in superconductor–nanowire–superconductor (SNS) weak links in the presence of a spin-splitting field that can result either from an intrinsic exchange field or the Zeeman effect of an applied field. We solve the full nonlinear Usadel equations numerically [The code used for calculating the results in this paper is available in https://github.com/wompo/Usadel-for-nanowires] and analyze the resulting supercurrent through the weak link and the behavior of the density of states in the center of the wire. We point out how the presence of the spin-orbit interaction gives rise to a long-range spin triplet supercurr…

nanowiresintrinsic spin-orbit interactionCondensed Matter::SuperconductivityJosephson weak linksCondensed Matter::Mesoscopic Systems and Quantum Hall Effectsupercurrentsuprajohteet
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