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Semimetallicity of free-standing hydrogenated monolayer boron from MgB2

Tateishi, I. ; Cuong, N. T. ; Moura, C. A.S. ; Cameau, M. ; Ishibiki, R. ; Fujino, A. ; Okada, S. ; Yamamoto, A. ; Araki, M. and Ito, S. , et al. (2019) In Physical Review Materials 3(2).
Abstract

Electronic states of a free-standing hydrogenated monolayer boron (HB) sheet were studied via soft X-ray spectroscopies at the B K-shell absorption edge and first-principles calculations. The HB sheet is semimetallic with electron and hole pockets at the Y and Γ points, respectively. The electron band results from the B-H-B bonds formed during synthesis from a MgB2 crystal, while the hole band is kept through the process and originates from a honeycomb lattice boron layer or borophene in MgB2. Our results suggest that the HB sheet is a promising two-dimensional material for realizing new boron-based or superconducting nanodevices.

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publishing date
type
Contribution to journal
publication status
published
in
Physical Review Materials
volume
3
issue
2
article number
024004
publisher
American Physical Society
external identifiers
  • scopus:85062544617
ISSN
2475-9953
DOI
10.1103/PhysRevMaterials.3.024004
language
English
LU publication?
no
id
f5119ae0-a04b-4dba-9a10-9f17a9c9ea66
date added to LUP
2019-04-30 16:51:22
date last changed
2022-07-06 15:22:49
@article{f5119ae0-a04b-4dba-9a10-9f17a9c9ea66,
  abstract     = {{<p>Electronic states of a free-standing hydrogenated monolayer boron (HB) sheet were studied via soft X-ray spectroscopies at the B K-shell absorption edge and first-principles calculations. The HB sheet is semimetallic with electron and hole pockets at the Y and Γ points, respectively. The electron band results from the B-H-B bonds formed during synthesis from a MgB2 crystal, while the hole band is kept through the process and originates from a honeycomb lattice boron layer or borophene in MgB2. Our results suggest that the HB sheet is a promising two-dimensional material for realizing new boron-based or superconducting nanodevices.</p>}},
  author       = {{Tateishi, I. and Cuong, N. T. and Moura, C. A.S. and Cameau, M. and Ishibiki, R. and Fujino, A. and Okada, S. and Yamamoto, A. and Araki, M. and Ito, S. and Yamamoto, S. and Niibe, M. and Tokushima, Takashi and Weibel, D. E. and Kondo, T. and Ogata, M. and Matsuda, I.}},
  issn         = {{2475-9953}},
  language     = {{eng}},
  month        = {{02}},
  number       = {{2}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Materials}},
  title        = {{Semimetallicity of free-standing hydrogenated monolayer boron from MgB2}},
  url          = {{http://dx.doi.org/10.1103/PhysRevMaterials.3.024004}},
  doi          = {{10.1103/PhysRevMaterials.3.024004}},
  volume       = {{3}},
  year         = {{2019}},
}