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

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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.

Detaljer

Författare
  • Jiyin Wang
  • Shaoyun Huang
  • Zijin Lei
  • Dong Pan
  • Jianhua Zhao
  • H. Q. Xu
Enheter & grupper
Externa organisationer
  • Peking University
  • Chinese Academy of Sciences
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Nanoteknik
  • Den kondenserade materiens fysik
Originalspråkengelska
Artikelnummer053106
TidskriftApplied Physics Letters
Volym109
Utgåva nummer5
StatusPublished - 2016 aug 1
PublikationskategoriForskning
Peer review utfördJa