Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Domain nucleation across the metal-insulator transition of self-strained V2 O3 films

Journal Article · · Physical Review Materials
 [1];  [2];  [3];  [4];  [5];  [3];  [6];  [2];  [7];  [1];  [8]
  1. Brookhaven National Laboratory (BNL), Upton, NY (United States)
  2. Helmholtz-Zentrum Berlin (HZB), (Germany). German Research Centre for Materials and Energy
  3. Technion-Israel Institute of Technology, Haifa (Israel)
  4. Univ. of Denver, CO (United States)
  5. Complutense Univ. of Madrid (Spain)
  6. Helmholtz-Zentrum Berlin (HZB), (Germany). German Research Centre for Materials and Energy; Fritz Haber Institute of the Max Planck Society, Berlin (Germany)
  7. Univ. of California, San Diego, La Jolla, CA (United States)
  8. Univ. of Oviedo (Spain)

Bulk V2O3 features concomitant metal-insulator (MIT) and structural (SPT) phase transitions at TC ~ 160 K. In thin films, where the substrate clamping can impose geometrical restrictions on the SPT, the epitaxial relation between the V2O3 film and substrate can have a profound effect on the MIT. Here we present a detailed characterization of domain nucleation and growth across the MIT in (001)-oriented V2O3 films grown on sapphire. By combining scanning electron transmission microscopy (STEM) and photoelectron emission microscopy (PEEM), we imaged the MIT with planar and vertical resolution. We observed that upon cooling, insulating domains nucleate at the top of the film, where strain is lowest, and expand downwards and laterally. This growth is arrested at a critical thickness of 50 nm from the substrate interface, leaving a persistent bottom metallic layer. As a result, the MIT cannot take place in the interior of films below this critical thickness. However, PEEM measurements revealed that insulating domains can still form on a very thin superficial layer at the top interface. Our results demonstrate the intricate spatial complexity of the MIT in clamped V2O3, especially the strain-induced large variations along the c axis. Finally, engineering the thickness-dependent MIT can provide an unconventional way to build out-of-plane geometry devices by using the persistent bottom metal layer as a native electrode.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Energy Frontier Research Centers (EFRC) (United States). Quantum Materials for Energy Efficient Neuromorphic Computing (Q-MEEN-C)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); European Union (EU)
Grant/Contract Number:
SC0012704; SC0019273
OSTI ID:
2340730
Alternate ID(s):
OSTI ID: 2473914
Report Number(s):
BNL--225554-2024-JAAM
Journal Information:
Physical Review Materials, Journal Name: Physical Review Materials Journal Issue: 3 Vol. 8; ISSN 2475-9953
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (48)

Structural Manipulation of Phase Transitions by Self‐Induced Strain in Geometrically Confined Thin Films journal September 2020
Positive and Negative Pressure Regimes in Anisotropically Strained V2O3 Films journal May 2023
Programmable Mechanical Resonances in MEMS by Localized Joule Heating of Phase Change Materials journal August 2013
In-situ X-ray diffraction study of alumina α-Al2O3 thermal behavior under dynamic vacuum and constant flow of nitrogen journal January 2016
Four-Dimensional Scanning Transmission Electron Microscopy (4D-STEM): From Scanning Nanodiffraction to Ptychography and Beyond journal May 2019
Planar Nanoactuators Based on VO2 Phase Transition journal August 2020
Generation of Tunable Stochastic Sequences Using the Insulator–Metal Transition journal January 2022
Disentangling Structural and Electronic Properties in V2O3 Thin Films: A Genuine Nonsymmetry Breaking Mott Transition journal July 2022
Imaging and Harnessing Percolation at the Metal–Insulator Transition of NdNiO 3 Nanogaps journal October 2019
Anisotropic Temperature-Driven Strain Dynamics in VO2 Solid-State Microactuators journal December 2020
Extended Mapping and Exploration of the Vanadium Dioxide Stress-Temperature Phase Diagram journal July 2010
Interplay between Ferroelastic and Metal−Insulator Phase Transitions in Strained Quasi-Two-Dimensional VO2 Nanoplatelets journal June 2010
Chaotic dynamics in nanoscale NbO2 Mott memristors for analogue computing journal August 2017
A microscopic view on the Mott transition in chromium-doped V2O3 journal November 2010
Striped nanoscale phase separation at the metal–insulator transition of heteroepitaxial nickelates journal November 2016
A scalable neuristor built with Mott memristors journal December 2012
Subnanosecond incubation times for electric-field-induced metallization of a correlated electron oxide journal April 2014
Nanotextured phase coexistence in the correlated insulator V2O3 journal September 2016
Biological plausibility and stochasticity in scalable VO2 active memristor neurons journal November 2018
Nanoscale self-organization and metastable non-thermal metallicity in Mott insulators journal June 2022
Temperature-driven nucleation of ferromagnetic domains in FeRh thin films journal June 2012
Metal-insulator transition in V 2 O 3 thin film caused by tip-induced strain journal December 2018
VO2nanophotonics journal November 2020
Giant nonvolatile resistive switching in a Mott oxide and ferroelectric hybrid journal April 2019
Anomalous compression and new high-pressure phases of vanadium sesquioxide, V 2 O 3 journal August 2013
Rare-earth nickelates R NiO 3 : thin films and heterostructures journal February 2018
Light-Assisted Resistance Collapse in a V2O3 -Based Mott-Insulator Device journal April 2021
Imaging of Electrothermal Filament Formation in a Mott Insulator journal November 2021
Early-stage dynamics of metallic droplets embedded in the nanotextured Mott insulating phase of V 2 O 3 journal August 2019
Metal-Insulator Transition in ( V 1 − x Cr x ) 2 O 3 journal November 1970
Spin and orbital occupation and phase transitions in V 2 O 3 journal May 2000
Metal-Insulator Transitions in Pure and Doped V 2 O 3 journal March 1973
Novel High-Pressure Monoclinic Metallic Phase of V 2 O 3 journal February 2014
Direct Observation of Decoupled Structural and Electronic Transitions and an Ambient Pressure Monocliniclike Metallic Phase of VO 2 journal November 2014
Robust Coupling between Structural and Electronic Transitions in a Mott Material journal February 2019
Oxides Which Show a Metal-to-Insulator Transition at the Neel Temperature journal July 1959
Dynamical Singlets and Correlation-Assisted Peierls Transition in V O 2 journal January 2005
Does Vo 2 Host a Transient Monoclinic Metallic Phase? journal August 2020
Metal-insulator transitions journal October 1998
Imaging the itinerant-to-localized transmutation of electrons across the metal-to-insulator transition in V 2 O 3 journal November 2021
Direct Observation of Percolation in a Manganite Thin Film journal September 2002
Mott Transition in VO2 Revealed by Infrared Spectroscopy and Nano-Imaging journal December 2007
A photoinduced metal-like phase of monoclinic VO 2 revealed by ultrafast electron diffraction journal October 2014
Isostructural metal-insulator transition in VO 2 journal November 2018
Ultrafast disordering of vanadium dimers in photoexcited VO 2 journal November 2018
Spatiotemporal characterization of the field-induced insulator-to-metal transition journal August 2021
Temperature-adaptive radiative coating for all-season household thermal regulation journal December 2021
Reconfigurable perovskite nickelate electronics for artificial intelligence journal February 2022

Similar Records

Metal-insulator transition in V2O3 with intrinsic defects
Journal Article · Thu Feb 18 23:00:00 EST 2021 · Physical Review. B · OSTI ID:1852984

Superconducting phase of TixOy thin films grown by molecular beam epitaxy
Journal Article · Mon Jun 27 00:00:00 EDT 2022 · Physical Review Materials · OSTI ID:1908136

Antiferromagnetic V2O3 based exchange coupling
Journal Article · Mon May 13 00:00:00 EDT 2024 · Physical Review Materials · OSTI ID:2352464