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Evolution of the electronic structure of HoB_{4} with temperature
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Biswas, Deepnarayan, Sahadev, Nishaina, Adhikary, Ganesh, Balakrishnan, Geetha and Maiti, Kalobaran (2013) Evolution of the electronic structure of HoB_{4} with temperature. Physical Review B (Condensed Matter and Materials Physics), Volume 88 (Number 13). Article number 134405 . doi:10.1103/PhysRevB.88.134405 ISSN 1098-0121.
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Official URL: http://dx.doi.org/10.1103/PhysRevB.88.134405
Abstract
We studied the electronic structure of a Shastry-Sutherland lattice system, HoB4 employing high-resolution photoemission spectroscopy and ab initio band-structure calculations. The surface and bulk borons exhibit subtle differences and loss of boron compared to the stoichiometric bulk. However, the surface and bulk conduction bands near Fermi level are found to be similar. Evolution of the electronic structure with temperature is found to be similar to that observed in a typical charge-disordered system. A sharp dip is observed at the Fermi level in the low-temperature spectra revealing a signature of antiferromagnetic gap. Asymmetric spectral weight transfer with temperature manifests particle-hole asymmetry that may be related to the exotic properties of these systems.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Physical Review B (Condensed Matter and Materials Physics) | ||||
Publisher: | American Physical Society | ||||
ISSN: | 1098-0121 | ||||
Official Date: | 2013 | ||||
Dates: |
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Volume: | Volume 88 | ||||
Number: | Number 13 | ||||
Page Range: | Article number 134405 | ||||
DOI: | 10.1103/PhysRevB.88.134405 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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