Effect of electron spin-spin exchange interaction on spin precession in coupled quantum well | Zendy

Tetsu Ito | Zendy; Wataru Shichi | Zendy; Masao Ichida | Zendy; Hideki Gotoh | Zendy; Hidehiko Kamada | Zendy; Hiroaki Ando | Zendy

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Effect of electron spin-spin exchange interaction on spin precession in coupled quantum well

Author(s) -

Tetsu Ito,

Wataru Shichi,

Masao Ichida,

Hideki Gotoh,

Hidehiko Kamada,

Hiroaki Ando

Publication year - 2011

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.699

H-Index - 319

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.3622324

Subject(s) - larmor precession , condensed matter physics , spin polarization , electron , spin (aerodynamics) , excitation , physics , precession , atomic physics , quantum beats , spinplasmonics , exchange interaction , magnetic field , zero field splitting , ferromagnetism , quantum mechanics , thermodynamics

textversion:authorElectron spin-spin interaction in an asymmetric coupled quantum well (CQW) was investigated through electron spin-precession measurements. Precession (Larmor) frequencies from electrons localized in two CQWs were measured by means of polarization- and time-resolved photoluminescence measurements under a high magnetic field. At a low excitation power density, the Larmor frequency of the CQW was same as that of a single quantum well. The Larmor frequency of electron spin in one well was shifted to that in the other well as the excitation power density was increased. These experimental results are quantitatively explained by an exchange interaction between electrons localized in the two wells

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