Determination of the Schottky barrier height of ferromagnetic contacts to few-layer phosphorene

Yoska Anugrah, Matthew C. Robbins, Paul A. Crowell, Steven J. Koester

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Abstract

Phosphorene, the 2D analogue of black phosphorus, is a promising material for studying spin transport due to its low spin-orbit coupling and its 1/2 nuclear spin, which could allow the study of hyperfine effects. In this work, the properties of permalloy (Py) and cobalt (Co) contacts to few-layer phosphorene are presented. The Schottky barrier height was extracted and determined as a function of gate bias. Flat-band barrier heights, relative to the valence band edge, of 110 meV and 200 meV were determined for Py and Co, respectively. These results are important for future studies of spin transport in phosphorene.

Original languageEnglish (US)
Article number103108
JournalApplied Physics Letters
Volume106
Issue number10
DOIs
StatePublished - Mar 9 2015

How much support was provided by MRSEC?

  • Partial

Reporting period for MRSEC

  • Period 1

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