Channel width effect on the spin-orbit interaction parameter in a two-dimensional electron gas

Jae Hyun Kwon, Hyun Cheol Koo, Joonyeon Chang, Suk Hee Han, Jonghwa Eom

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The spin splitting energy obtained from the Shubnikov-de Haas oscillation increases with decreasing channel width (w) of the InAs-based heterostructure. Since the surface charge concentration depends only weakly on w, the channel width dependence of the spin splitting energy is attributed to variations in the spin-orbit interaction strength. The spin-orbit interaction parameter was found to be inversely proportional to w in the range of w=2-64 μm. Our findings indicate that a strong spin-orbit interaction is induced in a narrow channel due to suppression of the spin precession length for a thin quantum well layer system.

Original languageEnglish
Article number112505
JournalApplied Physics Letters
Issue number11
Publication statusPublished - 2007 Mar 23
Externally publishedYes


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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