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Title: Heterogeneous nucleation and growth dynamics in the light-induced phase transition in vanadium dioxide

Here we report on ultrafast optical investigations of the light-induced insulator-to-metal phase transition in vanadium dioxide with controlled disorder generated by substrate mismatch. These results reveal common dynamics of this optically-induced phase transition that are independent of this disorder. Lastly, above the fluence threshold for completing the transition to the rutile crystalline phase, we find a common time scale, independent of sample morphology, of 40.5 ± 2 ps that is consistent with nucleation and growth dynamics of the R phase from the parent M1 ground state.
 [1] ;  [2] ;  [3] ;  [2] ;  [4] ;  [2] ;  [1]
  1. Univ. of Alabama at Birmingham, Birmingham, AL (United States)
  2. Vanderbilt Univ., Nashville, TN (United States)
  3. Korea Institute of Science and Technology (KIST), Seoul (Republic of Korea); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Report Number(s):
Journal ID: ISSN 0953-8984
Grant/Contract Number:
ECS-0801985; P200A090143; AC52-06NA25396; FG02-01ER4591
Accepted Manuscript
Journal Name:
Journal of Physics. Condensed Matter
Additional Journal Information:
Journal Volume: 28; Journal Issue: 12; Journal ID: ISSN 0953-8984
IOP Publishing
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; insulator-to-metal phase transitions; heterogeneous phase transitions; light-induced phase transitions
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1240027