Magnetic-Field Control of Quantum Critical Points of Valence Transition

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dc.creatorWatanabe, Shinji
dc.creatorTsuruta, Atsushi
dc.creatorMiyake, Kazumasa
dc.creatorFlouquet, Jacques
dc.date2008-04-30
dc.date2008-06-11
dc.date.accessioned2026-07-07T09:43:30Z
dc.date.available2026-07-07T09:43:30Z
dc.descriptionWe study the mechanism how critical end points of first-order valence transitions are controlled by a magnetic field. We show that the critical temperature is suppressed to be a quantum critical point (QCP) by a magnetic field and unexpectedly the QCP exhibits nonmonotonic field dependence in the ground-state phase diagram, giving rise to emergence of metamagnetism even in the intermediate valence-crossover regime. The driving force of the field-induced QCP is clarified to be cooperative phenomena of Zeeman effect and Kondo effect, which create a distinct energy scale from the Kondo temperature. This mechanism explains peculiar magnetic response in CeIrIn5 and metamagnetic transition in YbXCu4 for X=In as well as sharp contrast between X=Ag and Cd.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0804.4734
dc.identifierhttp://arxiv.org/abs/0804.4734
dc.identifierPhys. Rev. Lett. 100 (2008) 236401
dc.identifierdoi:10.1103/PhysRevLett.100.236401
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/162582
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleMagnetic-Field Control of Quantum Critical Points of Valence Transition
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