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                          <header>
                              <identifier>oai:research.chalmers.se:226248</identifier>
                              <datestamp>2018-03-01T11:46:36Z</datestamp>
                              <setSpec>openaire</setSpec>
                          </header>
                          <metadata>
                              <oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
                                  <dc:title>Ultrafast carrier dynamics in Landau-quantized graphene</dc:title>
                                  <dc:identifier>https://research.chalmers.se/en/publication/226248</dc:identifier>
                                  <dc:date>2015</dc:date>
                                              <dc:creator>Wendler, Florian</dc:creator>
                                              <dc:creator>Knorr, Andreas</dc:creator>
                                              <dc:creator>Malic, Ermin</dc:creator>
                                                  <dc:subject>Atom and Molecular Physics and Optics</dc:subject>
                                                  <dc:subject>Nano Technology</dc:subject>
                                              <dc:subject>graphene</dc:subject>
                                          <dc:description>In an external magnetic field, the energy of massless charge carriers in graphene is quantized into non-equidistant degenerate Landau levels including a zero-energy level. This extraordinary electronic dispersion gives rise to a fundamentally new dynamics of optically excited carriers. Here, we review the state of the art of the relaxation dynamics in Landau-quantized graphene focusing on microscopic insights into possible many-particle relaxation channels.We investigate optical excitation into a non equilibrium distribution followed by ultrafast carrier- carrier and carrier-phonon scattering processes. We reveal that surprisingly the Auger scattering dominates the relaxation dynamics in spite of the non-equidistant Landau quantization in graphene. Furthermore, we demonstrate how technologically relevant carrier multiplication can be achieved and discuss the possibility of optical gain in Landau-quantized graphene. The provided microscopic view on elementary many-particle processes can guide future experimental studies aiming at the design of novel graphene-based optoelectronic devices, such as highly efficient photodetectors, solar cells, and spectrally broad Landau level lasers.</dc:description>
                                                                  <dc:relation>info:eu-repo/grantAgreement/EC/FP7/604391//Graphene-Based Revolutions in ICT And Beyond (Graphene Flagship)/</dc:relation>
                                                  <dc:relation>info:eu-repo/semantics/altIdentifier/doi/10.1515/nanoph-2015-0018</dc:relation>
                                          <dc:type>info:eu-repo/semantics/article</dc:type>
                                          <dc:source>Nanophotonics vol.4(2015)</dc:source>
                                                      <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:language>eng</dc:language>
                                  <dc:audience>Researchers</dc:audience>
                                  <dc:format>application/pdf</dc:format>
                              </oai_dc:dc>
                          </metadata>
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