Quantum Magnets under Pressure: Controlling Elementary Excitations in TlCuCl3

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dc.creatorRüegg, Ch.
dc.creatorNormand, B.
dc.creatorMatsumoto, M.
dc.creatorFurrer, A.
dc.creatorMcMorrow, D.
dc.creatorKrämer, K.
dc.creatorGüdel, H. -U.
dc.creatorGvasaliya, S.
dc.creatorMutka, H.
dc.creatorBoehm, M.
dc.date2008-03-26
dc.date.accessioned2026-07-07T09:41:02Z
dc.date.available2026-07-07T09:41:02Z
dc.descriptionWe 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.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0803.3720
dc.identifierhttp://arxiv.org/abs/0803.3720
dc.identifierPhys. Rev. Lett. 100, 205701 (2008)
dc.identifierdoi:10.1103/PhysRevLett.100.205701
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/161685
dc.subjectStrongly Correlated Electrons
dc.titleQuantum Magnets under Pressure: Controlling Elementary Excitations in TlCuCl3
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