Noise-based approximation to thermal spin-injection in Fe/GaAs

0484569 - FZÚ 2018 RIV US eng J - Článek v odborném periodiku
Wagner, T. - Haigh, J.A. - Olejník, Kamil - Irvine, A.C. - Novák, Vít - Wunderlich, Joerg
Noise-based approximation to thermal spin-injection in Fe/GaAs.
Applied Physics Letters. Roč. 111, č. 14 (2017), s. 1-5, č. článku 142401. ISSN 0003-6951. E-ISSN 1077-3118
Grant CEP: GA MŠMT EF16_013/0001405
GRANT EU: European Commission(XE) 610115 - SC2
Grant ostatní: OP VVV - LNSM(XE) CZ.02.1.01/0.0/0.0/16_013/0001405
Institucionální podpora: RVO:68378271
Klíčová slova: semiconductors * transition * thermoelectric effects * electrical properties * chemical potential
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 3.495, rok: 2017

We analyze the prospects for thermal spin-injection from iron into gallium arsenide via the application of electrical noise. By estimating the applied effective temperature-equivalent gradients, we characterize the magnitude of any electrical part of the thermal spin-injection efficiency or the spin-dependent Seebeck effect. The magnitude of the non-local spin signal associated with this effect suggests that temperature differences on the order of similar to 100K would be needed for true thermal spin-injection experiments. The large size of the effective temperature gradients induced by the noise-based method means that even very small thermo-electric effects can be quantified.
Trvalý link: http://hdl.handle.net/11104/0279735