Spin current source based on a quantum point contact with local spin-orbit interaction

Proposal for construction of a source of spin-polarized current based on quantum point contact (QPC) with local spin-orbit interaction is presented. We show that spin-orbit interaction present within the narrowing acts like a spin filter. The spin polarization of the current is discussed as a functi...

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Veröffentlicht in:	Applied physics letters 2013-11, Vol.103 (20)
Hauptverfasser:	Nowak, M P, Szafran, B
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied physics CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS Construction Current sources ELECTRIC CONTACTS Electric current Fermi surfaces L-S COUPLING Point contact Polarization Polarization (spin alignment) Proposals SPIN SPIN ORIENTATION Spin-orbit interactions Spintronics
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Zusammenfassung:	Proposal for construction of a source of spin-polarized current based on quantum point contact (QPC) with local spin-orbit interaction is presented. We show that spin-orbit interaction present within the narrowing acts like a spin filter. The spin polarization of the current is discussed as a function of the Fermi energy and the width of the QPC.
ISSN:	0003-6951 1077-3118
DOI:	10.1063/1.4830372