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Title: Doping-controlled Coherent Electron-Phonon Coupling in Vanadium Dioxide

Broadband femtosecond transient spectroscopy and density functional calculations reveal that substitutional tungsten doping of a VO2 film changes the coherent phonon response compared to the undoped film due to altered electronic and structural dynamics.
Authors:
 [1] ;  [2] ;  [2] ;  [3] ;  [4] ;  [5]
  1. Vanderbilt Univ., Nashville, TN (United States) Interdisciplinary Materials Science; Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials
  2. Vanderbilt Univ., Nashville, TN (United States) Dept. of Physics and Astronomy
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials
  4. Vanderbilt Univ., Nashville, TN (United States) Dept. of Physics and Astronomy; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Vanderbilt Univ., Nashville, TN (United States). Dept. of Electrical Engineering and Computer Science
  5. Vanderbilt Univ., Nashville, TN (United States) Interdisciplinary Materials Science and Dept. of Physics and Astronomy
Publication Date:
OSTI Identifier:
1188253
Report Number(s):
BNL--108080-2015-CP
R&D Project: 16063/16058; KC0403020; TRN: US1500250
DOE Contract Number:
SC00112704
Resource Type:
Conference
Resource Relation:
Conference: Conference on Lasers and Electro-Optics (CLEO: QELS – Fundamental Science), San Jose, CA (United States), 10-15 May 2015
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; VANADIUM OXIDES; ELECTRON-PHONON COUPLING; DENSITY FUNCTIONAL METHOD; TUNGSTEN; DOPED MATERIALS; FILMS; PHONONS; SPECTROSCOPY; TRANSIENTS; ELECTRONIC STRUCTURE