Ehlen, N., Senkovskiy, B. V., Fedorov, A. V., Perucchi, A., Pietro, P. Di, Sanna, A., Profeta, G., Petaccia, L. and Gruneis, A. (2016). Evolution of electronic structure of few-layer phosphorene from angle-resolved photoemission spectroscopy of black phosphorous. Physical Review B, 94. p. 245410. APS Physics. ISSN 2469-9969

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Abstract

A complete set of tight-binding parameters for the description of the quasiparticle dispersion relations of black phosphorous (BP) and N-layer phosphorene with N = 1 ...∞ is presented. The parameters, which describe valence and conduction bands, are fit to angle-resolved photoemission spectroscopy (ARPES) data of pristine and lithium doped BP. We show that zone-folding of the experimental three-dimensional electronic band structure of BP is a simple and intuitive method to obtain the layer-dependent two-dimensional electronic structure of few-layer phosphorene. Zone folding yields the band gap of N-layer phosphorene in excellent quantitative agreement to experiments and ab initio calculations. A combined analysis of optical absorption and ARPES spectra of pristine and doped BP is used to estimate a value for the exciton binding energy of BP.

Item Type: Journal Article
Creators:
CreatorsEmailORCID
Ehlen, N.UNSPECIFIEDUNSPECIFIED
Senkovskiy, B. V.UNSPECIFIEDUNSPECIFIED
Fedorov, A. V.UNSPECIFIEDUNSPECIFIED
Perucchi, A.UNSPECIFIEDUNSPECIFIED
Pietro, P. DiUNSPECIFIEDUNSPECIFIED
Sanna, A.UNSPECIFIEDUNSPECIFIED
Profeta, G.UNSPECIFIEDUNSPECIFIED
Petaccia, L.UNSPECIFIEDUNSPECIFIED
Gruneis, A.UNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-81489
DOI: 10.1103/PhysRevB.94.245410
Journal or Publication Title: Physical Review B
Publisher: APS Physics
ISSN: 2469-9969
Volume: 94
Subjects: Natural sciences and mathematics
Physics
Faculty: Faculty of Mathematics and Natural Sciences
Divisions: Faculty of Mathematics and Natural Sciences > Institute of Physics II
Language: English
Date: 7 December 2016
Funders: ERC Grant No. 648589 ‘SUPER-2D’, CRC1238, DFG project GR 3708/2-1
Refereed: Yes
Page Range: p. 245410
URI: http://kups.ub.uni-koeln.de/id/eprint/8148

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