Electronic band structure of surface-doped black phosphorus

Jimin Kim; Minjae Huh; Sung Won Jung; Sae Hee Ryu; Yeongsup Sohn; Keun Su Kim

doi:10.1016/j.elspec.2016.12.001

Electronic band structure of surface-doped black phosphorus

Jimin Kim, Minjae Huh, Sung Won Jung, Sae Hee Ryu, Yeongsup Sohn, Keun Su Kim

Department of Physics

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

We present an overview on the electronic band structure of surface-doped black phosphorus. Angle-resolved photoemission spectroscopy data show that the in situ deposition of potassium atoms on the surface of single-crystalline black phosphorus modulates the band gap in the wide range of 0.0–0.6 eV. At zero band gap, the surface layers of black phosphorus become a Dirac semimetal whose band dispersion is highly anisotropic, linear in armchair and quadratic in zigzag directions. In light of theoretical band calculations, we elucidate the mechanism of these band modifications as the giant Stark effect due to strong vertical electric fields induced by potassium atoms.

Original language	English
Pages (from-to)	86-91
Number of pages	6
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	219
DOIs	https://doi.org/10.1016/j.elspec.2016.12.001
Publication status	Published - 2017 Aug

Bibliographical note

Funding Information:
This work was supported by the POSTECH Basic Science Research Institute Grant and the Brain Korea 21 Plus Project. J.K. was supported by NRF (National Research Foundation of Korea) Grant funded by the Korean Government (NRF-2016-Fostering Core Leaders of the Future Basic Science Program/Global Ph.D. Fellowship Program).

Publisher Copyright:
© 2016 Elsevier B.V.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Radiation
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Spectroscopy
Physical and Theoretical Chemistry

Access to Document

10.1016/j.elspec.2016.12.001

Cite this

@article{85914e7ee0ce4b609d929951785b07f7,

title = "Electronic band structure of surface-doped black phosphorus",

abstract = "We present an overview on the electronic band structure of surface-doped black phosphorus. Angle-resolved photoemission spectroscopy data show that the in situ deposition of potassium atoms on the surface of single-crystalline black phosphorus modulates the band gap in the wide range of 0.0–0.6 eV. At zero band gap, the surface layers of black phosphorus become a Dirac semimetal whose band dispersion is highly anisotropic, linear in armchair and quadratic in zigzag directions. In light of theoretical band calculations, we elucidate the mechanism of these band modifications as the giant Stark effect due to strong vertical electric fields induced by potassium atoms.",

author = "Jimin Kim and Minjae Huh and Jung, {Sung Won} and Ryu, {Sae Hee} and Yeongsup Sohn and Kim, {Keun Su}",

note = "Funding Information: This work was supported by the POSTECH Basic Science Research Institute Grant and the Brain Korea 21 Plus Project. J.K. was supported by NRF (National Research Foundation of Korea) Grant funded by the Korean Government (NRF-2016-Fostering Core Leaders of the Future Basic Science Program/Global Ph.D. Fellowship Program). Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2017",

month = aug,

doi = "10.1016/j.elspec.2016.12.001",

language = "English",

volume = "219",

pages = "86--91",

journal = "Journal of Electron Spectroscopy and Related Phenomena",

issn = "0368-2048",

publisher = "Elsevier",

}

TY - JOUR

T1 - Electronic band structure of surface-doped black phosphorus

AU - Kim, Jimin

AU - Huh, Minjae

AU - Jung, Sung Won

AU - Ryu, Sae Hee

AU - Sohn, Yeongsup

AU - Kim, Keun Su

N1 - Funding Information: This work was supported by the POSTECH Basic Science Research Institute Grant and the Brain Korea 21 Plus Project. J.K. was supported by NRF (National Research Foundation of Korea) Grant funded by the Korean Government (NRF-2016-Fostering Core Leaders of the Future Basic Science Program/Global Ph.D. Fellowship Program). Publisher Copyright: © 2016 Elsevier B.V.

PY - 2017/8

Y1 - 2017/8

N2 - We present an overview on the electronic band structure of surface-doped black phosphorus. Angle-resolved photoemission spectroscopy data show that the in situ deposition of potassium atoms on the surface of single-crystalline black phosphorus modulates the band gap in the wide range of 0.0–0.6 eV. At zero band gap, the surface layers of black phosphorus become a Dirac semimetal whose band dispersion is highly anisotropic, linear in armchair and quadratic in zigzag directions. In light of theoretical band calculations, we elucidate the mechanism of these band modifications as the giant Stark effect due to strong vertical electric fields induced by potassium atoms.

AB - We present an overview on the electronic band structure of surface-doped black phosphorus. Angle-resolved photoemission spectroscopy data show that the in situ deposition of potassium atoms on the surface of single-crystalline black phosphorus modulates the band gap in the wide range of 0.0–0.6 eV. At zero band gap, the surface layers of black phosphorus become a Dirac semimetal whose band dispersion is highly anisotropic, linear in armchair and quadratic in zigzag directions. In light of theoretical band calculations, we elucidate the mechanism of these band modifications as the giant Stark effect due to strong vertical electric fields induced by potassium atoms.

UR - http://www.scopus.com/inward/record.url?scp=85008350922&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85008350922&partnerID=8YFLogxK

U2 - 10.1016/j.elspec.2016.12.001

DO - 10.1016/j.elspec.2016.12.001

M3 - Article

AN - SCOPUS:85008350922

SN - 0368-2048

VL - 219

SP - 86

EP - 91

JO - Journal of Electron Spectroscopy and Related Phenomena

JF - Journal of Electron Spectroscopy and Related Phenomena

ER -

Electronic band structure of surface-doped black phosphorus

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this