Measurements of the spin-orbit interaction and Landé g factor in a pure-phase InAs nanowire double quantum dot in the Pauli spin-blockade regime

Research output: Contribution to journalArticle

Abstract

We demonstrate direct measurements of the spin-orbit interaction and Landé g factors in a semiconductor nanowire double quantum dot. The device is made from a single-crystal pure-phase InAs nanowire on top of an array of finger gates on a Si/SiO2 substrate and the measurements are performed in the Pauli spin-blockade regime. It is found that the double quantum dot exhibits a large singlet-triplet energy splitting of ΔST ∼ 2.3 meV, a strong spin-orbit interaction of ΔSO ∼ 140 μeV, and a large and strongly level-dependent Landé g factor of ∼12.5. These results imply that single-crystal pure-phase InAs nanowires are desired semiconductor nanostructures for applications in quantum information technologies.

Details

Authors
  • Jiyin Wang
  • Shaoyun Huang
  • Zijin Lei
  • Dong Pan
  • Jianhua Zhao
  • H. Q. Xu
Organisations
External organisations
  • Peking University
  • Chinese Academy of Sciences
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Nano Technology
  • Condensed Matter Physics
Original languageEnglish
Article number053106
JournalApplied Physics Letters
Volume109
Issue number5
Publication statusPublished - 2016 Aug 1
Publication categoryResearch
Peer-reviewedYes