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@ARTICLE{imnas:999174,
      author       = {Šimėnas, Mantas and O’Sullivan, James and Kennedy,
                      Oscar W. and Lin, Sen and Fearn, Sarah and Zollitsch,
                      Christoph W. and Dold, Gavin and Schmitt, Tobias and
                      Schüffelgen, Peter and Liu, Ren-Bao and Morton, John J. L.},
      title        = {{N}ear-{S}urface {T}e + 125 {S}pins with {M}illisecond
                      {C}oherence {L}ifetime},
      journal      = {Physical review letters},
      volume       = {129},
      number       = {11},
      issn         = {0031-9007},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {FZJ-2023-01208},
      pages        = {117701},
      year         = {2022},
      abstract     = {Impurity spins in crystal matrices are promising components
                      in quantum technologies, particularly if they can maintain
                      their spin properties when close to surfaces and material
                      interfaces. Here, we investigate an attractive candidate for
                      microwave-domain applications, the spins of group-VI 125Te+
                      donors implanted into natural Si at depths as shallow as 20
                      nm. We show that surface band bending can be used to ionize
                      such near-surface Te to spin-active Te+ state, and that
                      optical illumination can be used further to control the Te
                      donor charge state. We examine spin activation yield, spin
                      linewidth, and relaxation (T1) and coherence times (T2) and
                      show how a zero-field 3.5 GHz “clock transition” extends
                      spin coherence times to over 1 ms, which is about an order
                      of magnitude longer than other near-surface spin systems.},
      cin          = {PGI-9},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-9-20110106},
      pnm          = {5222 - Exploratory Qubits (POF4-522)},
      pid          = {G:(DE-HGF)POF4-5222},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {36154421},
      UT           = {WOS:000865935700013},
      doi          = {10.1103/PhysRevLett.129.117701},
      url          = {https://juser.fz-juelich.de/record/999174},
}