Separation of Rashba and Dresselhaus spin-orbit interactions using crystal direction dependent transport measurements

Youn Ho Park, Hyung Jun Kim, Joonyeon Chang, Suk Hee Han, Jonghwa Eom, Heon Jin Choi, Hyun Cheol Koo

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Abstract

The Rashba spin-orbit interaction effective field is always in the plane of the two-dimensional electron gas and perpendicular to the carrier wavevector but the direction of the Dresselhaus field depends on the crystal orientation. These two spin-orbit interaction parameters can be determined separately by measuring and analyzing the Shubnikov-de Haas oscillations for various crystal directions. In the InAs quantum well system investigated, the Dresselhaus term is just 5% of the Rashba term. The gate dependence of the oscillation patterns clearly shows that only the Rashba term is modulated by an external electric field.

Original languageEnglish
Article number252407
JournalApplied Physics Letters
Volume103
Issue number25
DOIs
Publication statusPublished - 2013 Dec 16

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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