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Title: Phase transition in bulk single crystals and thin films of V O 2 by nanoscale infrared spectroscopy and imaging

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1];  [2];  [2];  [3];  [4];  [4];  [5];  [6];  [2];  [2];  [7];  [8];  [2];  [2];  [2];  [5];  [9];  [9];  [10];  [2] more »;  [5];  [11];  [4];  [2] « less
  1. Univ. of California at San Diego, La Jolla, CA (United States); Stony Brook Univ., Stony Brook, NY (United States)
  2. Univ. of California at San Diego, La Jolla, CA (United States)
  3. Metal-Insulator Transition Creative Research Center, Daejeon (South Korea)
  4. Iowa State Univ., Ames, IA (United States)
  5. Univ. of Virginia, Charlottesville, VA (United States)
  6. College of William and Mary, Williamsburg, VA (United States)
  7. Boston Univ., Boston, MA (United States); ETH Zurich, Zurich (Switzerland)
  8. Univ. of California at San Diego, La Jolla, CA (United States); Boston Univ., Boston, MA (United States)
  9. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  10. Univ. of Colorado, Boulder, CO (United States)
  11. Metal-Insulator Transition Creative Research Center, Daejeon (South Korea); Korean Univ. of Science and Technology, Daejeon (South Korea)

We have systematically studied a variety of vanadium dioxide (VO2) crystalline forms, including bulk single crystals and oriented thin films, using infrared (IR) near-field spectroscopic imaging techniques. By measuring the IR spectroscopic responses of electrons and phonons in VO2 with sub-grain-size spatial resolution (~20nm), we show that epitaxial strain in VO2 thin films not only triggers spontaneous local phase separations, but leads to intermediate electronic and lattice states that are intrinsically different from those found in bulk. Generalized rules of strain- and symmetry-dependent mesoscopic phase inhomogeneity are also discussed. Furthermore, these results set the stage for a comprehensive understanding of complex energy landscapes that may not be readily determined by macroscopic approaches.

Research Organization:
Ames Lab., Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
W911NF-13-1-0210; AC02-05CH11231; AC02-07CH11358; SC0012592; FG02-09ER46643; 1255156
OSTI ID:
1227379
Alternate ID(s):
OSTI ID: 1198608
Report Number(s):
IS-J-8721; PRBMDO
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Vol. 91, Issue 24; ISSN 1098-0121
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 63 works
Citation information provided by
Web of Science

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Cited By (18)

Spectroscopic Studies on the Metal-Insulator Transition Mechanism in Correlated Materials journal May 2018
Modern Scattering‐Type Scanning Near‐Field Optical Microscopy for Advanced Material Research journal April 2019
Infrared nano-spectroscopy of ferroelastic domain walls in hybrid improper ferroelectric Ca3Ti2O7 journal November 2019
Multi-messenger nanoprobes of hidden magnetism in a strained manganite journal December 2019
Mesoscopic structural phase progression in photo-excited VO2 revealed by time-resolved x-ray diffraction microscopy journal February 2016
Suppression of Structural Phase Transition in VO2 by Epitaxial Strain in Vicinity of Metal-insulator Transition journal March 2016
Direct evidence for the coexistence of nanoscale high-conduction and low-conduction phases in VO 2 films journal October 2018
Thickness effects on the epitaxial strain states and phase transformations in (001)-VO 2 /TiO 2 thin films journal February 2019
Competing phases in epitaxial vanadium dioxide at nanoscale journal August 2019
Nanoscale electrodynamics of strongly correlated quantum materials journal November 2016
Geometric constraints on phase coexistence in vanadium dioxide single crystals journal January 2017
Ultrafast structural dynamics of VO 2 journal August 2017
Direct Visualization of Spatial Inhomogeneity of Spin Stripes Order in La1.72Sr0.28NiO4 journal August 2019
Magnetic Force Microscopy journal August 1999
Direct Visualization of Spatial Inhomogeneity of Spin Stripes Order in $\mathrm{La_{1.72}Sr_{0.28}NiO_{4}}$ text January 2019
Mesoscopic structural phase progression in photo-excited VO2 revealed by time-resolved x-ray diffraction microscopy text January 2015
Competing Phases in Epitaxial Vanadium Dioxide at Nanoscale preprint January 2019
Infrared nano-spectroscopy of ferroelastic domain walls in hybrid improper ferroelectric Ca$_3$Ti$_2$O$_7$ text January 2019

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