All-Electrical Determination of Crystal Orientation in Anisotropic Two-Dimensional Materials

Lintao Peng*, Spencer A. Wells, Christopher R. Ryder, Mark C. Hersam, Matthew Grayson

*Corresponding author for this work

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

The crystal orientation of an exfoliated black phosphorous flake is determined by purely electrical means. A sequence of three resistance measurements on an arbitrarily shaped flake with five contacts determines the three independent components of the anisotropic in-plane resistivity tensor, thereby revealing the crystal axes. The resistivity anisotropy ratio decreases linearly with increasing temperature T and carrier density reaching a maximum ratio of 3.0 at low temperatures and densities, while mobility indicates impurity scattering at low T and acoustic phonon scattering at high T.

Original languageEnglish (US)
Article number086801
JournalPhysical review letters
Volume120
Issue number8
DOIs
StatePublished - Feb 21 2018

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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