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

Journal Article · Mon Mar 09 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4914978· OSTI ID:22395727

Anugrah, Yoska; Robbins, Matthew C.; Koester, Steven J. ^[1]; Crowell, Paul A. ^[2]

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1. Department of Electrical and Computer Engineering, University of Minnesota-Twin Cities, Minneapolis, Minnesota 55455 (United States)
2. School of Physics and Astronomy, University of Minnesota-Twin Cities, Minneapolis, Minnesota 55455 (United States)

Phosphorene, the 2D analogue of black phosphorus, is a promising material for studying spin transport due to its low spin-orbit coupling and its ½ 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.

• OSTI ID: 22395727
• Journal Information: Applied Physics Letters, Vol. 106, Issue 10; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COBALT
DIFFUSION BARRIERS
HYPERFINE STRUCTURE
LAYERS
L-S COUPLING
PERMALLOY
PHOSPHORUS
SPIN
VALENCE