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  Optical properties of V2O3 in its whole phase diagram

Lo Vecchio, I., Baldassarre, L., D’Apuzzo, F., Limaj, O., Nicoletti, D., Perucchi, A., et al. (2015). Optical properties of V2O3 in its whole phase diagram. Physical Review B, 91(15): 155133. doi:10.1103/PhysRevB.91.155133.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-7EA0-2 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-2CEA-4
Genre: Journal Article

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PhysRevB.91.155133.pdf (Publisher version), 2MB
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PhysRevB.91.155133.pdf
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2015
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http://dx.doi.org/10.1103/PhysRevB.91.155133 (Publisher version)
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http://arxiv.org/abs/1504.07279 (Preprint)
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 Creators:
Lo Vecchio, I.1, Author
Baldassarre, L.2, Author
D’Apuzzo, F.1, 2, Author
Limaj, O.3, Author
Nicoletti, Daniele4, Author              
Perucchi, A.5, Author
Fan, L.6, Author
Metcalf, P.7, Author
Marsi, M.8, Author
Lupi, S.9, Author
Affiliations:
1Dipartimento di Fisica, Università di Roma “Sapienza,” Piazzale A. Moro 2, I-00185 Roma, Italy, ou_persistent22              
2Center for Life Nano Science@Sapienza, Istituto Italiano di Tecnologia, V.le Regina Elena 291, I-00186, Roma, Italy, ou_persistent22              
3Insititute of Bioengineering, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland, ou_persistent22              
4Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938293              
5Sincrotrone Trieste, Area Science Park, I-34012 Basovizza, Trieste, Italy, ou_persistent22              
6National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230029, China, ou_persistent22              
7Department of Physics, Purdue University, West Lafayette, Indiana 47907, USA, ou_persistent22              
8Laboratoire de Physique des Solides, CNRS-UMR 8502, Université Paris-Sud, F-91405 Orsay, France, ou_persistent22              
9CNR-IOM and Dipartimento di Fisica, Università di Roma “Sapienza,” Piazzale A. Moro 2, I-00185, Roma, Italy, ou_persistent22              

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Free keywords: PACS numbers: 71.30.+h, 78.30.−j, 71.20.−b
 Abstract: Vanadium sesquioxide V2O3 is considered a textbook example of Mott-Hubbard physics. In this paper, we present an extended optical study of its whole temperature/doping phase diagram as obtained by doping the pure material with M=Cr or Ti atoms (V1-xMx)2O3. We reveal that its thermodynamically stable metallic and insulating phases, although macroscopically equivalent, show very different low-energy electrodynamics. The Cr and Ti doping drastically change both the antiferromagnetic gap and the paramagnetic metallic properties. A slight chromium content induces a mesoscopic electronic phase separation, while the pure compound is characterized by short-lived quasiparticles at high temperature. This study thus provides a new comprehensive scenario of the Mott-Hubbard physics in the prototype compound V2O3.

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Language(s): eng - English
 Dates: 2015-04-072015-02-092015-04-202015-04-15
 Publication Status: Published in print
 Pages: 9
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1103/PhysRevB.91.155133
arXiv: 1504.07279
 Degree: -

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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 91 (15) Sequence Number: 155133 Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: /journals/resource/954925225008