Spin Hanle effect in mesoscopic superconductors
نویسندگان
چکیده
M. Silaev,1,2 P. Virtanen,1 T. T. Heikkilä,3 and F. S. Bergeret4,5,6 1O.V. Lounasmaa Laboratory, P.O. Box 15100, FI-00076 Aalto University, Finland 2Department of Theoretical Physics, The Royal Institute of Technology, Stockholm SE-10691, Sweden 3Department of Physics and Nanoscience Center, University of Jyväskylä, P.O. Box 35 (YFL), FI-40014 University of Jyväskylä, Finland 4Centro de Fı́sica de Materiales (CFM-MPC), Centro Mixto CSIC-UPV/EHU, Manuel de Lardizabal 5, E-20018 San Sebastián, Spain 5Donostia International Physics Center (DIPC), Manuel de Lardizabal 5, E-20018 San Sebastián, Spain 6Institut für Physik, Carl von Ossietzky Universität, D-26111 Oldenburg, Germany (Received 7 August 2014; revised manuscript received 21 December 2014; published 14 January 2015)
منابع مشابه
Large spin accumulation and crystallographic dependence of spin transport in single crystal gallium nitride nanowires
Semiconductor spintronics is an alternative to conventional electronics that offers devices with high performance, low power and multiple functionality. Although a large number of devices with mesoscopic dimensions have been successfully demonstrated at low temperatures for decades, room-temperature operation still needs to go further. Here we study spin injection in single-crystal gallium nitr...
متن کاملCharge and Spin Effects in Mesoscopic Josephson Junctions
We consider the charge and spin effects in low dimensional superconducting weak links. The first part of the review deals with the effects of electron-electron interaction in Superconductor/Luttinger liquid/Superconductor junctions. The experimental realization of this mesoscopic hybrid system can be the individual single wall carbon nanotube that bridges the gap between two bulk superconductor...
متن کاملHanle effect in transport through quantum dots coupled to ferromagnetic leads
– We suggest a series of transport experiments on spin precession in quantum dots coupled to one or two ferromagnetic leads. Dot spin states are created by spin injection and analyzed via the linear conductance through the dot, while an applied magnetic field gives rise to the Hanle effect. Such a Hanle experiment can be used to determine the spin lifetime in the quantum dot, to measure the spi...
متن کاملHanle spin precession in a two-dimensional electron system
We investigate the nonlocal Hanle effect in high mobility two-dimensional electron systems using (Ga,Mn)As/GaAs spin Esaki diodes as spin selective contacts. Spin signals in these systems can be strongly affected by dynamic nuclear polarization, which mimics long spin-relaxation times extracted from the measured Hanle curves. Here, we introduce a method which largely suppresses these effects by...
متن کاملLocal Hanle-effect studies of spin drift and diffusion in n:GaAs epilayers and spin-transport devices
In electron-doped GaAs, we use scanning Kerr-rotation microscopy to locally probe and spatially resolve the depolarization of electron spin distributions by transverse magnetic fields. The shape of these local Hanleeffect curves provides a measure of the spin lifetime as well as spin transport parameters including drift velocity, mobility and diffusion length. Asymmetries in the local Hanle dat...
متن کامل