Seung Hyun Park

Anistotropic Hyperfine Interaction

Anistotropic Hyperfine Interaction (AHF) Seung Hyun Park, Rajib Rahman, Gerhard Klimeck

Challenge/Objective:

  • Can a single impurity donor wavefunction(wf) be experimentally mapped?

Approach:

  • Indirectly probe wfs by measuring anisotropic hyperfine (AHF) tensor components.
  • Use Si-29 as a single probe atom or a sample of probe atoms
  • Calculate donor wfs in realistic geometries and electric fields
  • Propose experiment: Distort wf by electric fields and interfaces
    => distort AHF
    => measure AHF based on lattice symmetries
    => map the wavefunction

Results/Impact:

  • Demonstrated numerical stability of AHF calculation through semi-analytic comparison (toy wavefunctions)
  • Demonstrated distortion of tight binding wavefunctions and toy wfs of different symmetries produce signature AHF maps.
  • Preparing a full journal publications


Powerpoint slide as ppt, pdf, or as image below:

Seung Hyun Park's Pages

Biography Anisotropic Hyperfine Interaction (AHF) Coherent Transport Adiabatic Passage (CTAP) D- Modeling for As Donors Charge Qubit Control Group Publications

Research Group

Members Alumni Visitors Pictures Prospective Students Member Access