Direct Observation of Decoupled Structural and Electronic Transitions and an Ambient Pressure Monoclinic-Like Metallic Phase of VO${}_2$

Abstract

We report the simultaneous measurement of the structural and electronic components of the metal-insulator transition of VO${}_2$ using electron and photoelectron spectroscopies and microscopies. We show that these evolve over different temperature scales, and are separated by an unusual monoclinic-like metallic phase. Our results provide conclusive evidence that the new monoclinic-like metallic phase, recently identified in high-pressure and nonequilibrium measurements, is accessible in the thermodynamic transition at ambient pressure, and we discuss the implications of these observations on the nature of the MIT in VO${}_2$.

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Cited by in corpus (30)

• Instantaneous band gap collapse in photoexcited monoclinic VO${}_2$ due to photocarrier doping
• Metal-insulator Transition in VO2: a DFT+DMFT perspective
• Imaging the nanoscale phase separation in vanadium dioxide thin films at terahertz frequencies
• Universal phase dynamics in VO2 switches revealed by ultrafast operando diffraction
• Resolving the VO${}_2$ controversy: Mott mechanism dominates the insulator-to-metal transition
• Correlation-driven insulator-metal transition in near-ideal vanadium dioxide films
• Unraveling the Mott-Peierls intrigue in Vanadium dioxide
• Triply degenerate nodal points in RERh${}_6$Ge${}_4$ (RE=Y, La, Lu)
• Ultrafast THz Field Control of Electronic and Structural Interactions in Vanadium Dioxide
• Mesoscopic structural phase progression in photo-excited VO2 revealed by time-resolved x-ray diffraction microscopy
• Unified Band Theoretic Description of Electronic and Magnetic Properties of Vanadium Dioxide Phases
• Does VO${}_2$ Host a Transient Monoclinic Metallic Phase?
• Direct observation of the M2 phase with its Mott transition in a VO${}_2$ film
• Multiple crossovers and coherent states in a Mott-Peierls insulator
• The phase transition in VO2 probed using x-ray, visible and infrared radiations
• Nanoscale spectroscopic imaging of phase separation in a correlated material by resonant X-ray holography
• Massively strained VO2 thin film growth on RuO2
• Mapping nanoscale charge states and phase domains with quantitative hyperspectral coherent diffractive imaging spectroscopy
• Observation of weakened V-V dimers in the monoclinic metallic phase of strained VO2
• Fragile 3D Order in V${}_{1-x}$Mo${}_x$O${}_2$
• Mott materials: unsuccessful metals with a bright future
• Kinetically Decoupled Electrical and Structural Phase Transitions in VO2
• VO${}_2$ under hydrostatic pressure: Isostructural phase transition close to a critical end-point
• Emergence of metallic monoclinic states of VO${}_2$ films induced by K deposition
• Nature of the photo-induced metallic state in monoclinic VO${}_2$
• Multi-Fields Modulation of Physical Properties of Oxide Thin Films
• Terahertz-driven ultrafast dynamics of rare-earth nickelates by controlling only the charge degree of freedom
• Interface-induced collective phase transition in VO2-based bilayers studied by layer selective spectroscopy
• Identification of a monoclinic metallic state in VO2 from a modified first-principles approach
• Toward nonthermal control of excited quantum materials: framework and investigations by ultrafast electron scattering and imaging