Broadband magneto-optical absorption by a Rashba spintronic system | Zendy

W. Xu | Zendy; Chao Yang | Zendy; Jiawan Zhang | Zendy

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Broadband magneto-optical absorption by a Rashba spintronic system

Author(s) -

W. Xu,

Chao Yang,

Jiawan Zhang

Publication year - 2007

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.2816241

Subject(s) - spintronics , condensed matter physics , absorption (acoustics) , photon , spin (aerodynamics) , atomic electron transition , physics , electron , magnetic field , materials science , ferromagnetism , optics , spectral line , quantum mechanics , thermodynamics

We examine the selection rules for electron-photon interaction in a two-dimensional electron gas (2DEG) in the presence of the Rashba spin-orbit interaction and quantizing magnetic fields. In such a case, new channels open up for electronic transition accompanied by the absorption of photons. As a result, two absorption peaks and a broadband absorption spectrum can be observed for high-mobility samples at relatively high magnetic fields. We find that electronic transitions between the neighboring Landau levels within the same spin orientation are the main channels for magneto-optical absorption in a spin-split 2DEG. © 2007 American Institute of Physics.

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