Pressure dependence of the charge density wave in 1T-TaS2 and its relation to superconductivity

Abstract

We present a state-of-the-art x-ray diffraction study of the charge density wave order in 1T-TaS2 as a function of temperature and pressure. Our results prove that the charge density wave, which we characterize in terms of wave vector, amplitude and the coherence length, indeed exists in the superconducting region of the phase diagram. The data further imply that the ordered charge density wave structure as a whole becomes superconducting at low temperatures, i. e, superconductivity and charge density wave coexist on a macroscopic scale in real space. This result is fundamentally different from a previously proposed separation of superconducting and insulating regions in real space and, instead, provides evidence that the superconducting and the charge density wave gap exist in separate regions of reciprocal space.

References in corpus (2)

• Quantum Criticality in Heavy Fermion Metals
• Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3Oy

Cited by in corpus (12)

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• Modified interlayer stacking and insulator to correlated-metal transition driven by uniaxial strain in 1$T$-TaS${}_2$
• Origin of Distinct Insulating Domains in the Layered Charge Density Wave Material 1T-TaS2
• Coexistence of superconductivity and charge-density-wave domain in $1T$-Fe${}_x$Ta${}_{1-x}$SSe
• Atomistic origin of metal versus charge-density-wave phase separation in indium atomic wires on Si(111)
• Lattice-Driven Chiral Charge Density Wave State in 1T-TaS${}_2$
• Unconventional orbital-charge density wave mechanism in transition metal dichalcogenide 1T-TaS2
• Electronic inhomogeneity in Cs- and Sb-terminated surfaces of CsV${}_3$Sb${}_5$ probed by scanning photoemission spectromicroscopy
• Strain Engineering of Correlated Charge-Ordered Phases in 1T-TaS2
• Raman scattering fingerprints of the charge density wave state in one-dimensional NbTe${}_4$