<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" 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:creator>Rüegg, Christian</dc:creator>
  <dc:creator>Normand, Bruce</dc:creator>
  <dc:creator>Matsumoto, M.</dc:creator>
  <dc:creator>Furrer, A.</dc:creator>
  <dc:creator>McMorrow, D. F.</dc:creator>
  <dc:creator>Krämer, K. W.</dc:creator>
  <dc:creator>Güdel, Hans-Ulrich</dc:creator>
  <dc:creator>Gvasaliya, S. N.</dc:creator>
  <dc:creator>Mutka, H.</dc:creator>
  <dc:creator>Boehm, M.</dc:creator>
  <dc:date>2008-05-21</dc:date>
  <dc:description xmlns:ns0="xml" ns0:lang="en">We follow the evolution of the elementary excitations of the quantum antiferromagnet TlCuCl₃ through the pressure-induced quantum critical point, which separates a dimer-based quantum disordered phase from a phase of long-ranged magnetic order. We demonstrate by neutron spectroscopy the continuous emergence in the weakly ordered state of a low-lying but massive excitation corresponding to longitudinal fluctuations of the magnetic moment. This mode is not present in a classical description of ordered magnets, but is a direct consequence of the quantum critical point</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>https://folia.unifr.ch/global/documents/300817</dc:identifier>
  <dc:identifier>https://folia.unifr.ch/documents/300817/files/normand_qmp.pdf</dc:identifier>
  <dc:language>eng</dc:language>
  <dc:relation>info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevLett.100.205701</dc:relation>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>License undefined</dc:rights>
  <dc:source>Physical Review Letters. - 2008, vol. 100, p. 205701</dc:source>
  <dc:subject xmlns:ns1="xml" ns1:lang="en">quantum phase transitions</dc:subject>
  <dc:subject xmlns:ns2="xml" ns2:lang="en">quantized spin models (magnetism)</dc:subject>
  <dc:subject xmlns:ns3="xml" ns3:lang="en">dynamic properties of magnetic materials</dc:subject>
  <dc:subject xmlns:ns4="xml" ns4:lang="en">neutron inelastic scattering (condensed matter)</dc:subject>
  <dc:subject>info:eu-repo/classification/udc/53</dc:subject>
  <dc:title xmlns:ns5="xml" ns5:lang="en">Quantum magnets under pressure: controlling elementary excitations in TlCuCl₃</dc:title>
  <dc:type>http://purl.org/coar/resource_type/c_6501</dc:type>
</oai_dc:dc>