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Magnetic-field-induced quantum critical point and competing order parameters in URu2Si2
1National High Magnetic Field Laboratory, MS E536 LANL, Los Alamos, New Mexico 87545, USA.
Physical Review Letters
|February 3, 2004
Abstract:
A comprehensive transport study, as a function of temperature and continuous magnetic fields of up to 45 T, reveals that URu2Si2 possesses all the essential hallmarks of quantum criticality at fields around 37+/-1 T. The formation of multiple phases at low temperatures at and around the quantum critical point suggests the existence of competing order parameters.