Hidden Magnetism and Quantum Criticality in the Heavy Fermion Superconductor CeRhIn5

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dc.creatorPark, Tuson
dc.creatorRonning, F.
dc.creatorYuan, H. Q.
dc.creatorSalamon, M. B.
dc.creatorMovshovich, R.
dc.creatorSarrao, J. L.
dc.creatorThompson, J. D.
dc.date2006-03-03
dc.date2006-03-07
dc.date.accessioned2026-07-07T07:02:07Z
dc.date.available2026-07-07T07:02:07Z
dc.descriptionWith understood exceptions, conventional superconductivity does not coexist with long-range magnetic order[1]. In contrast, unconventional superconductivity develops near a boundary separating magnetically ordered and magnetically disordered phases[2,3]. A maximum in the superconducting transition temperature Tc develops where this boundary extrapolates to T=0 K, suggesting that fluctuations associated with this magnetic quantum-critical point are essential for unconventional superconductivity[4,5]. Invariably though, unconventional superconductivity hides the magnetic boundary when T < Tc, preventing proof of a magnetic quantum-critical point[5]. Here we report specific heat measurements of the pressure-tuned unconventional superconductor CeRhIn5 in which we find a line of quantum-phase transitions induced inside the superconducting state by an applied magnetic field. This quantum-critical line separates a phase of coexisting antiferromagnetism and superconductivity from a purely unconventional superconducting phase and terminates at a quantum tetracritical point where the magnetic field completely suppresses superconductivity. The T->0 K magnetic field-pressure phase diagram of CeRhIn5 is well described with a theoretical model[6,7] developed to explain field-induced magnetism in the high-Tc cuprates but in which a clear delineation of quantum-phase boundaries has not been possible. These experiments establish a common relationship among hidden magnetism, quantum criticality and unconventional superconductivity in cuprate and heavy-electron systems, such as CeRhIn5.
dc.descriptionjournal reference added
dc.identifierhttps://arxiv.org/abs/cond-mat/0603090
dc.identifierhttp://arxiv.org/abs/cond-mat/0603090
dc.identifierNature 440, 65 (2006)
dc.identifierdoi:10.1038/nature04571
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/108493
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleHidden Magnetism and Quantum Criticality in the Heavy Fermion Superconductor CeRhIn5
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