Show simple item record

dc.contributor.authorStone, M. B.
dc.contributor.authorBroholm, C.
dc.contributor.authorReich, D.H.
dc.contributor.authorTchernyshyov, O.
dc.contributor.authorVorderwisch, P.
dc.contributor.authorHarrison, N.
dc.date.accessioned2010-01-07T20:00:14Z
dc.date.available2010-01-07T20:00:14Z
dc.date.issued2006-06-30
dc.identifier.citationPhysical Review Letters 30 June 2006, vol.96, no.25, pp. 257203/1-4en_US
dc.identifier.urihttp://jhir.library.jhu.edu/handle/1774.2/33751
dc.description.abstractExchange interactions between S=½ sites in piperazinium hexachlorodicuprate produce a frustrated bilayer magnet with a singlet ground state. We have determined the field-temperature phase diagram by high field magnetization and neutron scattering experiments. There are two quantum critical points: Hc1=7.5 T separates a quantum paramagnet phase from a three dimensional, antiferromagnetically ordered state while Hc2=37 T marks the onset of a fully polarized state. The ordered phase, which we describe as a magnon Bose-Einstein condensate (BEC), is embedded in a quantum critical regime with short range correlations. A low temperature anomaly in the BEC phase boundary indicates that additional low energy features of the material become important near Hc1.en_US
dc.language.isoen_USen_US
dc.publisherAmerican Physical Societyen_US
dc.subjecthigh field magnetizationen_US
dc.subjectfield-temperature phase diagramen_US
dc.subjectsinglet ground stateen_US
dc.subjectfrustrated bilayer magneten_US
dc.subjectpiperazinium hexachlorodicuprateen_US
dc.subjectorganic magneten_US
dc.subjectquantum criticalityen_US
dc.subjectparamagnetic-antiferromagnetic transitionsen_US
dc.subjectfully polarized stateen_US
dc.subjectparamagnetic materialsen_US
dc.subjectneutron diffractionen_US
dc.subjectmolecular magnetismen_US
dc.subjectmagnonsen_US
dc.subjectexchange interactions (electron)en_US
dc.subjectantiferromagnetic materialsen_US
dc.subjectmagnon Bose-Einstein condensateen_US
dc.subjectquantum critical regimeen_US
dc.titleQuantum criticality in an organic magneten_US
dc.typeArticleen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record