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Pressure-Induced Collapse of the Charge Density Wave and Higgs Mode Visibility in 2H−TaS2

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Pressure-Induced Collapse of the Charge Density Wave and Higgs Mode Visibility in 2H−TaS2

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dc.contributor.author	Grasset, Romain
dc.contributor.author	Gallais, Yann
dc.contributor.author	Sacuto, Alain
dc.contributor.author	Cazayous, Maximilien
dc.contributor.author	Mañas Valero, Samuel
dc.contributor.author	Coronado Miralles, Eugenio
dc.contributor.author	Méasson, Marie-Aude
dc.date.accessioned	2020-04-07T10:36:22Z
dc.date.available	2020-04-07T10:36:22Z
dc.date.issued	2019
dc.identifier.citation	Grasset, Romain Gallais, Yann Sacuto, Alain Cazayous, Maximilien Mañas Valero, Samuel Coronado Miralles, Eugenio Méasson, Marie-Aude 2019 Pressure-Induced Collapse of the Charge Density Wave and Higgs Mode Visibility in 2H−TaS2 Physical Review Letters 122 127001-1 127001-6
dc.identifier.uri	https://hdl.handle.net/10550/73825
dc.description.abstract	The pressure evolution of the Raman active electronic excitations of the transition metal dichalcogenides 2H-TaS2 is followed through the pressure phase diagram embedding incommensurate charge-density-wave and superconducting states. At high pressure, the charge-density wave is found to collapse at 8.5 GPa. In the coexisting charge-density-wave and superconducting orders, we unravel a strong in-gap superconducting mode, attributed to a Higgs mode, coexisting with the expected incoherent Cooper-pair breaking signature. The latter remains in the pure superconducting state reached above 8.5 GPa. Our report constitutes a new observation of such Raman active Higgs mode since the long-standing unique case 2H-NbSe2.
dc.language.iso	eng
dc.relation.ispartof	Physical Review Letters, 2019, vol. 122, p. 127001-1-127001-6
dc.subject	Conductivitat elèctrica
dc.subject	Espectroscòpia Raman
dc.title	Pressure-Induced Collapse of the Charge Density Wave and Higgs Mode Visibility in 2H−TaS2
dc.type	journal article	es_ES
dc.date.updated	2020-04-07T10:36:22Z
dc.identifier.doi	10.1103/PhysRevLett.122.127001
dc.identifier.idgrec	131019
dc.rights.accessRights	open access	es_ES