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@ARTICLE{Herzog:281770,
      author       = {Herzog, F. and Heedt, S. and Goerke, S. and Ibrahim, A. and
                      Rupprecht, B. and Heyn, Ch and Hardtdegen, H. and Schäpers,
                      Thomas and Wilde, M. A. and Grundler, D.},
      title        = {{C}onfinement and inhomogeneous broadening effects in the
                      quantum oscillatory magnetization of quantum dot ensemble},
      journal      = {Journal of physics / Condensed matter},
      volume       = {28},
      number       = {4},
      issn         = {1361-648X},
      address      = {Bristol},
      publisher    = {IOP Publ.},
      reportid     = {FZJ-2016-01452},
      pages        = {045301 -},
      year         = {2016},
      abstract     = {We report on the magnetization of ensembles of etched
                      quantum dots with a lateral diameter of 460nm, which we
                      prepared from InGaAs/InP heterostructures. The quantum dots
                      exhibit 1/B-periodic de-Haas-van-Alphen-type oscillations in
                      the magnetization M(B) for external magnetic fields B>2 T,
                      measured by torque magnetometry at 0.3 K. We compare the
                      experimental data to model calculations assuming different
                      confinement potentials and including ensemble broadening
                      effects. The comparison shows that a hard wall potential
                      with an edge depletion width of 100nm explains the magnetic
                      behavior. Beating patterns induced by Rashba spin-orbit
                      interaction (SOI) as measured in unpatterned and
                      nanopatterned InGaAs/InP heterostructures are not observed
                      for the quantum dots. From our model we predict that
                      signatures of SOI in the magnetization could be observed in
                      larger dots in tilted magnetic fields.},
      cin          = {PGI-9},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-9-20110106},
      pnm          = {521 - Controlling Electron Charge-Based Phenomena
                      (POF3-521)},
      pid          = {G:(DE-HGF)POF3-521},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000368762900006},
      doi          = {10.1088/0953-8984/28/4/045301},
      url          = {https://juser.fz-juelich.de/record/281770},
}