by Braicovich, L., Ghiringhelli, G., Tjeng, L. H., Bisogni, V. and Dallera, C., Piazzalunga, A., Reichelt, W. and Brookes, N. B.
Abstract:
We present resonant inelastic x-ray scattering (RIXS) results on insulating monoclinic VO2 with excitation across the L-2,L-3 edges of vanadium. The spectra measured near threshold in the L-3 region and in the L-2 region show a Raman behavior with a clear peak around 0.9 eV transferred energy. The analysis of the data allows the neutral excitation spectrum of the system up to about 2-2.5 eV to be determined. These excitations are due to dd transitions, whose main contributions are discussed. The possibility of d(1);d(1)-> d(2);d(0) charge fluctuations within a dimer in RIXS is also discussed. The results are compared with available information on optical constants and on electron energy loss spectroscopy. Due to the low symmetry of the system, there is a similarity between the Raman spectrum obtained with RIXS and the optical absorption spectrum.
Reference:
Neutral 3d excitations in insulating VO2 as seen with resonant inelastic x-ray scattering at the V L-3,L-2 edges (Braicovich, L., Ghiringhelli, G., Tjeng, L. H., Bisogni, V. and Dallera, C., Piazzalunga, A., Reichelt, W. and Brookes, N. B.), In PHYSICAL REVIEW B, AMER PHYSICAL SOC, volume 76, 2007.
Bibtex Entry:
@article{ ISI:000249786500014, Author = {Braicovich, L. and Ghiringhelli, G. and Tjeng, L. H. and Bisogni, V. and Dallera, C. and Piazzalunga, A. and Reichelt, W. and Brookes, N. B.}, Title = {{Neutral 3d excitations in insulating VO2 as seen with resonant inelastic x-ray scattering at the V L-3,L-2 edges}}, Journal = {{PHYSICAL REVIEW B}}, Year = {{2007}}, Volume = {{76}}, Number = {{12}}, Month = {{SEP}}, Abstract = {{We present resonant inelastic x-ray scattering (RIXS) results on insulating monoclinic VO2 with excitation across the L-2,L-3 edges of vanadium. The spectra measured near threshold in the L-3 region and in the L-2 region show a Raman behavior with a clear peak around 0.9 eV transferred energy. The analysis of the data allows the neutral excitation spectrum of the system up to about 2-2.5 eV to be determined. These excitations are due to dd transitions, whose main contributions are discussed. The possibility of {d(1);d(1)-> d(2);d(0)} charge fluctuations within a dimer in RIXS is also discussed. The results are compared with available information on optical constants and on electron energy loss spectroscopy. Due to the low symmetry of the system, there is a similarity between the Raman spectrum obtained with RIXS and the optical absorption spectrum.}}, Publisher = {{AMER PHYSICAL SOC}}, Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}}, Type = {{Article}}, Language = {{English}}, Affiliation = {{Braicovich, L (Corresponding Author), Politecn Milan, INFM, CNR, SOFT,Dipartimento Fis, Piazza Leonardo da Vinci 32, I-20133 Milan, Italy. Politecn Milan, INFM, CNR, SOFT,Dipartimento Fis, I-20133 Milan, Italy. Politecn Milan, INFM, CNR Coherentia, Dipartimento Fis, I-20133 Milan, Italy. Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany. European Synchrotron Radiat Facil, F-38043 Grenoble, France. Politecn Milan, INFM, CNR, ULTRAS,Dipartimento Fis, I-20133 Milan, Italy. Politecn Milan, Dipartimento Fis, I-20133 Milan, Italy. Tech Univ Dresden, Inst Anorgan Chem, D-01069 Dresden, Germany.}}, DOI = {{10.1103/PhysRevB.76.125105}}, Article-Number = {{125105}}, ISSN = {{1098-0121}}, Keywords-Plus = {{EMISSION-SPECTROSCOPY; TRANSITION; FLUORESCENCE; SOLIDS}}, Research-Areas = {{Materials Science; Physics}}, Web-of-Science-Categories = {{Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter}}, ResearcherID-Numbers = {{Tjeng, Liu Hao/B-8607-2019 Brookes, Nicholas B/C-6718-2019 Ghiringhelli, Giacomo/D-1159-2014 }}, ORCID-Numbers = {{Tjeng, Liu Hao/0000-0002-0595-9312 Brookes, Nicholas B/0000-0002-1342-9530 Ghiringhelli, Giacomo/0000-0003-0867-7748 Braicovich, Lucio/0000-0001-6548-9140}}, Number-of-Cited-References = {{24}}, Times-Cited = {{12}}, Usage-Count-Last-180-days = {{0}}, Usage-Count-Since-2013 = {{25}}, Journal-ISO = {{Phys. Rev. B}}, Doc-Delivery-Number = {{215CS}}, Unique-ID = {{ISI:000249786500014}}, DA = {{2020-12-22}}, }
Comments are closed