Magnetic field dependence of Pauli spin blockade: A window into the sources of spin relaxation in silicon quantum dots

G. Yamahata, T. Kodera, H. O.H. Churchill, K. Uchida, C. M. Marcus, S. Oda

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)

Abstract

We investigate spin relaxation in a silicon double quantum dot via leakage current through Pauli blockade as a function of interdot detuning and magnetic field. A dip in leakage current as a function of magnetic field on an ∼40 mT field scale is attributed to spin-orbit mediated spin relaxation. On a larger (∼400 mT) field scale, a peak in leakage current is seen in some, but not all, Pauli-blocked transitions, and is attributed to spin-flip cotunneling. Both dip and peak structure show good agreement between theory and experiment.

Original languageEnglish
Article number115322
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume86
Issue number11
DOIs
Publication statusPublished - 2012 Sep 13
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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