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Title: Fermi Surface of Metallic V 2 O 3 from Angle-Resolved Photoemission: Mid-level Filling of e g π Bands

Abstract

Using angle resolved photoemission spectroscopy, we report the first band dispersions and distinct features of the bulk Fermi surface (FS) in the paramagnetic metallic phase of the prototypical metal-insulator transition material V$$_{2}O_{3}$$. Along the c axis we observe both an electron pocket and a triangular holelike FS topology, showing that both V 3d $$a_{1g}$$ and e$$_{g}^{π}$$ states contribute to the FS. Here, these results challenge the existing correlation-enhanced crystal field splitting theoretical explanation for the transition mechanism and pave the way for the solution of this mystery.

Authors:
 [1];  [2];  [2];  [3];  [4];  [5];  [6];  [7]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  3. Max-Planck-Inst. fur Festkörperforschung, Stuttgart (Germany)
  4. Purdue Univ., West Lafayette, IN (United States)
  5. Univ. di Roma “Sapienza”, Rome (Italy)
  6. Univ. of Michigan, Ann Arbor, MI (United States). Randall Lab. of Physics
  7. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division
OSTI Identifier:
1581048
Alternate Identifier(s):
OSTI ID: 1328632
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 117; Journal Issue: 16; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Lo Vecchio, I., Denlinger, J. D., Krupin, O., Kim, B. J., Metcalf, P. A., Lupi, S., Allen, J. W., and Lanzara, A. Fermi Surface of Metallic V2O3 from Angle-Resolved Photoemission: Mid-level Filling of egπ Bands. United States: N. p., 2016. Web. doi:10.1103/physrevlett.117.166401.
Lo Vecchio, I., Denlinger, J. D., Krupin, O., Kim, B. J., Metcalf, P. A., Lupi, S., Allen, J. W., & Lanzara, A. Fermi Surface of Metallic V2O3 from Angle-Resolved Photoemission: Mid-level Filling of egπ Bands. United States. doi:10.1103/physrevlett.117.166401.
Lo Vecchio, I., Denlinger, J. D., Krupin, O., Kim, B. J., Metcalf, P. A., Lupi, S., Allen, J. W., and Lanzara, A. Tue . "Fermi Surface of Metallic V2O3 from Angle-Resolved Photoemission: Mid-level Filling of egπ Bands". United States. doi:10.1103/physrevlett.117.166401. https://www.osti.gov/servlets/purl/1581048.
@article{osti_1581048,
title = {Fermi Surface of Metallic V2O3 from Angle-Resolved Photoemission: Mid-level Filling of egπ Bands},
author = {Lo Vecchio, I. and Denlinger, J. D. and Krupin, O. and Kim, B. J. and Metcalf, P. A. and Lupi, S. and Allen, J. W. and Lanzara, A.},
abstractNote = {Using angle resolved photoemission spectroscopy, we report the first band dispersions and distinct features of the bulk Fermi surface (FS) in the paramagnetic metallic phase of the prototypical metal-insulator transition material V$_{2}O_{3}$. Along the c axis we observe both an electron pocket and a triangular holelike FS topology, showing that both V 3d $a_{1g}$ and e$_{g}^{π}$ states contribute to the FS. Here, these results challenge the existing correlation-enhanced crystal field splitting theoretical explanation for the transition mechanism and pave the way for the solution of this mystery.},
doi = {10.1103/physrevlett.117.166401},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 16,
volume = 117,
place = {United States},
year = {2016},
month = {10}
}

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