Universität zu Köln

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