Evolution of electronic structure of few-layer phosphorene from angle-resolved photoemission spectroscopy of black phosphorous

被引：26

作者：

Ehlen, N. ^{[1
]}

Senkovskiy, B. V. ^{[1
]}

Fedorov, A. V. ^{[1
,2
,3
]}

Perucchi, A. ^{[4
]}

Di Pietro, P. ^{[4
]}

Sanna, A. ^{[5
]}

Profeta, G. ^{[6
,7
]}

Petaccia, L. ^{[4
]}

Grueneis, A. ^{[1
]}

机构：

[1] Univ Cologne, Inst Phys 2, Zulpicher Str 77, D-50937 Cologne, Germany

[2] IFW Dresden, POB 270116, D-01171 Dresden, Germany

[3] St Petersburg State Univ, St Petersburg 198504, Russia

[4] Elettra Sincrotrone Trieste, Str Statale 14 Km 163-5, I-34149 Trieste, Italy

[5] Max Planck Inst Mikrostrukturphys, Weinberg 2, D-06120 Halle, Germany

[6] Univ Aquila, Dept Phys & Chem Sci, Via Vetoio 10, I-67100 Coppito, Italy

[7] Univ Aquila, SPIN CNR, Via Vetoio 10, I-67100 Coppito, Italy

来源：

PHYSICAL REVIEW B | 2016年 / 94卷 / 24期

关键词：

TOTAL-ENERGY CALCULATIONS; BAND-GAP; SEMICONDUCTORS; INSULATORS; EXCITONS;

D O I：

10.1103/PhysRevB.94.245410

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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...infinity 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.

引用

页数：12