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DTSTART:20250330T030000
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DTSTAMP:20260424T143415Z
UID:6715f2bb8d83d166026756@ist.ac.at
DTSTART:20250127T113000
DTEND:20250127T123000
DESCRIPTION:Speaker: Mikhail Feigelman\nhosted by Georgios Katsaros\, Mikha
 il Lemeshko\, Maksym Serbyn\nAbstract: We calculate the conductance of a j
 unction between a disordered superconductor and a very strong half-metalli
 c ferromagnet admitting electrons with only one spin projection. A usual m
 echanism of Andreev reflection is strongly suppressed in this case since C
 ooper pairs are composed of electrons with opposite spins. However\, this 
 obstacle can be overcome if we take into account spin-orbit scattering ins
 ide thesuperconductor. Spin-orbit scattering induces a fluctuational (zero
  on average) spin- triplet component of the superconducting condensate\, w
 hich is enough to establish Andreev transport into a strong ferromagnet. T
 his remarkably simple mechanism is quite versatile and can explain long-ra
 nge triplet proximity effect in a number of experimental setups. One parti
 cular application of the suggested effect is to measure the spin-orbit sca
 ttering time SO in disordered superconducting materials. The value of Andr
 eev conductance strongly depends on the parameter  _SO/h  and can be notic
 e-able even in very disordered but relatively light metals like granular a
 luminum.
LOCATION:Office Bldg West / Ground floor / Heinzel Seminar Room (I21.EG.101
 )\, ISTA
ORGANIZER:swiddman@ist.ac.at
SUMMARY:Mikhail Feigelman: Andreev Conductance in Disordered SF Junctions w
 ith Spin-Orbit Scattering
URL:https://talks-calendar.ista.ac.at/events/5350
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