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Interface contributions to spin relaxation in a short-period InAs/GaSb superlattice

Identifieur interne : 00FC06 ( Main/Repository ); précédent : 00FC05; suivant : 00FC07

Interface contributions to spin relaxation in a short-period InAs/GaSb superlattice

Auteurs : RBID : Pascal:01-0460148

Descripteurs français

Pascal (Inist)
- 7225R, Etude expérimentale, Indium composé, Gallium composé, Semiconducteur III-V, Superréseau semiconducteur, Relaxation spin électronique réseau, Polarisation spin électronique, Liaison chimique, Structure interface, Etat interface.

English descriptors

KwdEn :
- Chemical bonds, Electron spin polarization, Electron spin-lattice relaxation, Experimental study, Gallium compounds, III-V semiconductors, Indium compounds, Interface states, Interface structure, Semiconductor superlattices.

Abstract

We describe measurements and analysis of the electronic spin relaxation in a short-period InAs/GaSb superlattice. Intrinsic inversion symmetry breaking due to tetrahedral bonding at the superlattice interfaces leads to spin relaxation over an order of magnitude greater than that expected from a continuum model. We extract the inversion asymmetry of the bonding character at the two distinct interfaces in this superlattice and describe how these (and future) measurements can be used to constrain fundamental interface parameters of superlattice envelope-function models.

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Pascal:01-0460148

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<front><div type="abstract" xml:lang="en">We describe measurements and analysis of the electronic spin relaxation in a short-period InAs/GaSb superlattice. Intrinsic inversion symmetry breaking due to tetrahedral bonding at the superlattice interfaces leads to spin relaxation over an order of magnitude greater than that expected from a continuum model. We extract the inversion asymmetry of the bonding character at the two distinct interfaces in this superlattice and describe how these (and future) measurements can be used to constrain fundamental interface parameters of superlattice envelope-function models.</div>
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Interface contributions to spin relaxation in a short-period InAs/GaSb superlattice

Interface contributions to spin relaxation in a short-period InAs/GaSb superlattice

Descripteurs français

English descriptors

Abstract

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