Pressure-induced suppression of charge density wave and emergence of Superconductivity in 1T-VSe2

Abstract

We report pressure evolution of charge density wave (CDW) order and emergence of superconductivity (SC) in 1T-VSe2 single crystal by studying resistance and magnetoresistance behavior under high pressure. With increasing quasi-hydrostatic pressure the CDW order enhances with increase ofthe ordering temperature up to 240K at 12 GPa. Upon further increase of pressure, the resistance anomaly due to CDW order gets suppressed drastically and superconductivity emerges at ~15 GPa, with the onset critical temperature (Tc) ~ 4K. The pressure dependence of Tc is found negligible, different from the significant increase or a dome-shape seen in iso-structural layered diselenide superconductors. The high pressure magnetoresistance and Hall measurements suggest successive electronic structural changes with Fermi surface modifications at 6 GPa and 12GPa. From the observed negative magnetoresistance in this pressure range and absence of coexisting CDW and SC phases, we propose that intra-layer spin-fluctuation can play a role in the emergence of superconductivity in the high pressure phase.

6 pages

References in corpus (5)

• Evidence of Spin Frustration in Vanadium Diselenide Monolayer Magnet
• Observation of a Charge Density Wave Incommensuration Near the Superconducting Dome in CuxTiSe2
• Signatures of the Kondo effect in VSe2
• Quantum and classical mode softening near the charge-density-wave/superconductor transition of Cu${}_x$TiSe${}_2$: Raman spectroscopic studies
• Strain Engineering a $4a\times \sqrt{3}a$ Charge Density Wave Phase in Transition Metal Dichalcogenide 1T-VSe${}_2$

Cited by in corpus (14)

• Novel Superstructure-Phase Two-Dimensional Material 1$\text{T}$-VSe${}_2$ at High Pressure
• A Quantum Monte Carlo study of the structural, energetic, and magnetic properties of two-dimensional (2D) H and T phase VSe${}_2$
• Hot carrier-assisted switching of the electron-phonon interaction in 1$T$-VSe${}_2$
• Interplay of charge density waves, disorder, and superconductivity in 2$H$-TaSe${}_2$ elucidated by NMR
• Superconductivity in Te-deficient ZrTe${}_2$
• Pressure-induced 1T to 3R structural phase transition in metallic VSe2: X-ray diffraction and first-principles theory
• Spectroscopic evidence of high temperature superconductivity in VSe2
• Structural and electronic phase transitions in Zr${}_{1.03}$Se${}_2$ at high pressure
• Pressure-induced superconductivity reentrant in transition metal dichalcogenide TiSe2
• First-principles study of the crystal structure, electronic structure, and transport properties of NiTe${}_2$ under pressure
• Quantum Monte Carlo and density functional theory study of strain and magnetism in 2D 1T-VSe${}_2$ with charge density wave states
• Identification of a Low Energy Metastable 1$T$-Type Phase for Monolayer VSe2
• Electronic inhomogeneity in Cs- and Sb-terminated surfaces of CsV${}_3$Sb${}_5$ probed by scanning photoemission spectromicroscopy
• Electron-phonon interaction, magnetic phase transition, charge density waves and resistive switching in VS2 and VSe2 revealed by Yanson point contact spectroscopy