% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Volk:189771,
      author       = {Volk, Christian and Neumann, Christoph and Kazarski,
                      Sebastian and Fringes, Stefan and Engels, Stephan and Haupt,
                      Federica and Müller, André and Stampfer, Christoph},
      title        = {{P}robing relaxation times in graphene quantum dots},
      journal      = {Nature Communications},
      volume       = {4},
      issn         = {2041-1723},
      address      = {London},
      publisher    = {Nature Publishing Group},
      reportid     = {FZJ-2015-02801},
      pages        = {1753},
      year         = {2013},
      abstract     = {Graphene quantum dots are attractive candidates for
                      solid-state quantum bits. In fact, the predicted weak
                      spin-orbit and hyperfine interaction promise spin qubits
                      with long coherence times. Graphene quantum dots have been
                      extensively investigated with respect to their excitation
                      spectrum, spin-filling sequence and electron-hole crossover.
                      However, their relaxation dynamics remain largely
                      unexplored. This is mainly due to challenges in device
                      fabrication, in particular concerning the control of carrier
                      confinement and the tunability of the tunnelling barriers,
                      both crucial to experimentally investigate decoherence
                      times. Here we report pulsed-gate transient current
                      spectroscopy and relaxation time measurements of excited
                      states in graphene quantum dots. This is achieved by an
                      advanced device design that allows to individually tune the
                      tunnelling barriers down to the low megahertz regime, while
                      monitoring their asymmetry. Measuring transient currents
                      through electronic excited states, we estimate a lower bound
                      for charge relaxation times on the order of 60–100 ns.},
      cin          = {PGI-9 / JARA-FIT},
      ddc          = {500},
      cid          = {I:(DE-Juel1)PGI-9-20110106 / $I:(DE-82)080009_20140620$},
      pnm          = {422 - Spin-based and quantum information (POF2-422)},
      pid          = {G:(DE-HGF)POF2-422},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000318872100110},
      pubmed       = {pmid:23612294},
      doi          = {10.1038/ncomms2738},
      url          = {https://juser.fz-juelich.de/record/189771},
}