Excitonic mechanism of Aharonov-Casher oscillations

We propose the realization of the Aharonov-Casher (AC) effect in a mesoscopic semiconductor ring. We find that the thermodynamic characteristics of the excitonic gas in the semiconductor ring are periodic in the AC flux F through it with a period F 0 = hc/2 μ B g, where μ B is the Bohr magneton and...

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Bibliographic Details
Published in:Physics letters. A 1994-03, Vol.186 (1), p.162-166
Main Authors: Krive, I.V., Krokhin, A.A.
Format: Article
Language:English
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Summary:We propose the realization of the Aharonov-Casher (AC) effect in a mesoscopic semiconductor ring. We find that the thermodynamic characteristics of the excitonic gas in the semiconductor ring are periodic in the AC flux F through it with a period F 0 = hc/2 μ B g, where μ B is the Bohr magneton and g is the g-factor. The amplitude of oscillations passes through a maximum at the temperature T∼Δ (Δ is the typical energy of excitons). Outside this region it decreases either exponentially (if T ⪡ Δ), or according to a power law (if T ≳ Δ).
ISSN:0375-9601
1873-2429
DOI:10.1016/0375-9601(94)90939-3