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First Principles Study of Metal/Bi2Te3 Interfaces: Implications to Improve Contact Resistance
Published online by Cambridge University Press: 31 January 2011
Abstract
We investigate the band offsets and stability for Ni/Bi2Te3 and Co/Bi2Te3 interfaces by first principles calculations. It is found that the surface termination strongly affects the band offsets. Ni and Co are found to form Ohmic contacts to Bi2Te3. The interface formation energies for Co/Bi2Te3 interfaces are much lower than those of Ni/Bi2Te3 interfaces. Our calculations are consistent with the experimental data.
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- Copyright © Materials Research Society 2009
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