Spin-relaxation process of holes in type-IIAl0.34Ga0.66 | Zendy

Tadashi Kawazoe | Zendy; Yasuaki Masumoto | Zendy; Tomobumi Mishina | Zendy

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Spin-relaxation process of holes in type-IIAl0.34Ga0.66

Author(s) -

Tadashi Kawazoe,

Yasuaki Masumoto,

Tomobumi Mishina

Publication year - 1993

Publication title -

physical review. b, condensed matter

Language(s) - English

Resource type - Journals

eISSN - 1095-3795

pISSN - 0163-1829

DOI - 10.1103/physrevb.47.10452

Subject(s) - spin (aerodynamics) , antiparallel (mathematics) , relaxation (psychology) , physics , condensed matter physics , scattering , quantum mechanics , thermodynamics , magnetic field , psychology , social psychology

We have measured the spin memory and the spin-relaxation times of holes in type-II quantum wells by means of pump-and-probe methods. The fast Γ-X interlayer scattering which is characteristic of type-II multiple quantum wells allows us to observe directly the hole spin-relaxation process. The hole spin relaxation is described by two decay components. The faster decay time ranges from 20 to 100 ps and depends on the number density of ‘‘antiparallel-spin’’ holes. This indicates that the scattering between up-spin holes and down-spin holes is the major spin-relaxation process of holes. The slower time component is about 20 ns, which is probably ascribed to the spin relaxation of localized holes in the well layers

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