Anisotropic exciton Stark shift in black phosphorus

A. Chaves, Tony Low, P. Avouris, D. Çaklr, F. M. Peeters

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72 Scopus citations

Abstract

We calculate the excitonic spectrum of few-layer black phosphorus by direct diagonalization of the effective mass Hamiltonian in the presence of an applied in-plane electric field. The strong attractive interaction between electrons and holes in this system allows one to investigate the Stark effect up to very high ionizing fields, including also the excited states. Our results show that the band anisotropy in black phosphorus becomes evident in the direction-dependent field-induced polarizability of the exciton.

Original languageEnglish (US)
Article number155311
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume91
Issue number15
DOIs
StatePublished - Apr 27 2015

Bibliographical note

Publisher Copyright:
© 2015 American Physical Society.

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