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Rectangular model of a ballistic spin interferometer in (001) InGaAs/InAlAs quantum wells

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Title: Rectangular model of a ballistic spin interferometer in (001) InGaAs/InAlAs quantum wells
Authors: Koga, Takaaki Browse this author →KAKEN DB
Faniel, S. Browse this author
Mineshige, S. Browse this author
Mastuura, T. Browse this author
Sekine, Y. Browse this author
Keywords: spintronics
spin interference
Rashba effect
Dresselhaus effect
spin-orbit interaction
quantum wells
mesoscopic transport
Issue Date: 31-Jan-2010
Publisher: Elsevier B.V.
Journal Title: Physics Procedia
Volume: 3
Issue: 2
Start Page: 1325
End Page: 1328
Publisher DOI: 10.1016/j.phpro.2010.01.185
Abstract: We report an unambiguous detection of the crytalline anisotropy of the spin-orbit interaction in (001) InAlAs/InGaAs/InAlAs quantum wells using nanofabricated rectangular loop arrays, where the sides of the constituent loops are aligned along either the [110] or [110 ̄] crystallographic axis. The fabrication and measurements were performed on the epi-wafer samples whose spin properties were characterized previously [Koga et al., Phys. Rev. Lett 89, 046801 (2002)]. We find that the experimentally observed spin interference patterns ― the amplitude modulation of the Al'tshuler-Aronov-Spivak oscillations as a function of the gate voltage ― are in good agreement with the results of the spin interferometer model extended for rectangular loops and including both the Rashba and Dresselhaus spin-orbit interactions.
Type: article (author version)
URI: http://hdl.handle.net/2115/49487
Appears in Collections:情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 古賀 貴亮

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