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Title: Photoinduced Melting of V4O7 Correlated State

Journal Article · · Advanced Electronic Materials

The compound V4O7 is one of the Magnéli phase (VnO2n - 1, n = 3, 4, …, 9) correlated vanadium oxides with distinct intriguing electronic and structural properties. The possibility to manipulate the phase state of V4O7 on an ultrafast time scale by light makes this material promising for potential applications in photonics, optoelectronics, quantum, and neuromorphic circuit design. In this work, the ultrafast spectroscopy of V4O7 reveals the second-order nature of the photoinduced insulator-to-metal transition, emphasizing electronic and lattice contributions. The findings reveal the influence of the laser excitation level and temperature on these dynamics, providing a comprehensive understanding of V4O7 structural changes and response to external stimuli. The phenomenological model based on the Landau–Ginzburg formalism provides a robust framework for explaining the photoinduced transition dynamics, showing a detailed picture of the light interaction with the electronic and lattice subsystems. This integrated approach significantly enhances the understanding of V4O7 complex behavior upon photoexcitation, opening new possibilities for developing new optoelectronic devices and noninvasive optical control of the phase transition pathways in vanadates.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
Sponsoring Organization:
Gordon and Betty Moore Foundation; National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
SC0012704
OSTI ID:
2484014
Report Number(s):
BNL--226449-2024-JAAM
Journal Information:
Advanced Electronic Materials, Journal Name: Advanced Electronic Materials Journal Issue: 3 Vol. 11; ISSN 2199-160X
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

References (27)

Optically Tunable Electrical Oscillations in Oxide‐Based Memristors for Neuromorphic Computing journal April 2024
Investigation of the hyperfine splitting in V3O5 and V4O7 by inelastic neutron scattering journal June 1976
Polaronic phase transitions and complex permittivity of solid polar insulators with gigantic dielectric response journal October 2013
Melting of a Wigner crystal in an ionic dielectric journal February 2000
Structural aspects of the metal-insulator transition in V4O7 journal March 1973
The crystal structure of V4O7 at 120°K journal January 1978
X-ray diffraction studies of the metal insulator transitions in Ti4O7, V4O7 and VO2 journal December 1970
Insulator-metal transition in V3O5 journal February 1978
In situ H2O2 generation for tuning reactivity of V4O7 nanoflakes and V2O5 nanorods for oxidase enzyme mimic activity and removal of organic pollutants journal April 2021
Additive-free synthesis of V 4 O 7 hierarchical structures as high performance cathodes for lithium ion batteries journal January 2014
Kramers–Kronig constrained variational analysis of optical spectra journal August 2005
Metal-insulator transition inV4O7: Specific-heat measurements and interpretation journal June 1985
Surface generation and detection of phonons by picosecond light pulses journal September 1986
Electronic structure of V4O7: Charge ordering, metal-insulator transition, and magnetism journal September 2011
Phase diagram of the ultrafast photoinduced insulator-metal transition in vanadium dioxide journal April 2012
Microscopic magnetic properties of metallic and insulatingV4O7andV7O13 journal February 1974
Optical conductivity ofV4O7across its metal-insulator transition journal September 2014
Ultrafast structural dynamics of VO 2 journal August 2017
Ultrafast Excited-State Dynamics of V 3 O 5 as a Signature of a Photoinduced Insulator-Metal Phase Transition journal August 2017
Charge Localization at Metal-Insulator Transitions in Ti 4 O 7 and V 4 O 7 journal May 1972
The crystal structure of V4O7 journal May 1972
Specific features of the electrical conductivity of V4O7 single crystals journal November 2009
Polaron Crystallization and the Metal–Insulator Transition journal December 1998
Electrical Properties of the V4O7Single Crystals journal March 1970
The metal-insulator transition of the Magnéli phase V 4 O 7 : Implications for V 2 O 3 journal December 2003
Photoinduced dynamics of V4O7 conference January 2021
Raman Spectroscopy of V4O7 Films journal February 2022