Electronic structures and stability of Ni/Bi2Te3 and Co/Bi2Te3 interfaces

Ka Xiong; Weichao Wang; Husam N. Alshareef; Rahul P. Gupta; John B. White; Bruce E. Gnade; Kyeongjae Cho

doi:10.1088/0022-3727/43/11/115303

Electronic structures and stability of Ni/Bi2Te3 and Co/Bi2Te3 interfaces

Ka Xiong, Weichao Wang, Husam N. Alshareef, Rahul P. Gupta, John B. White, Bruce E. Gnade, Kyeongjae Cho

Research output: Contribution to journal › Article › peer-review

59 Scopus citations

Abstract

We investigate the electronic structures and stability for Ni/Bi 2Te3, NiTe/Bi2Te3, Co/Bi 2Te3 and CoTe2/Bi2Te3 interfaces by first-principles calculations. It is found that the surface termination strongly affects the band alignment. Ni and Co are found to form Ohmic contacts to Bi2Te3. The interface formation energy for Co/Bi2Te3 interfaces is much lower than that of Ni/Bi2Te3 interfaces. Furthermore, we found that NiTe on Bi2Te3 is more stable than Ni, while the formation energies for Co and CoTe2 on Bi2Te3 are comparable. © 2010 IOP Publishing Ltd.

Original language	English (US)
Pages (from-to)	115303
Journal	Journal of Physics D: Applied Physics
Volume	43
Issue number	11
DOIs	https://doi.org/10.1088/0022-3727/43/11/115303
State	Published - Mar 4 2010

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work is supported by the II-VI Foundation, a private foundation. The authors thank Dr Jeff Sharp for useful suggestions.

ASJC Scopus subject areas

Surfaces, Coatings and Films
Acoustics and Ultrasonics
Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1088/0022-3727/43/11/115303

Cite this

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title = "Electronic structures and stability of Ni/Bi2Te3 and Co/Bi2Te3 interfaces",

abstract = "We investigate the electronic structures and stability for Ni/Bi 2Te3, NiTe/Bi2Te3, Co/Bi 2Te3 and CoTe2/Bi2Te3 interfaces by first-principles calculations. It is found that the surface termination strongly affects the band alignment. Ni and Co are found to form Ohmic contacts to Bi2Te3. The interface formation energy for Co/Bi2Te3 interfaces is much lower than that of Ni/Bi2Te3 interfaces. Furthermore, we found that NiTe on Bi2Te3 is more stable than Ni, while the formation energies for Co and CoTe2 on Bi2Te3 are comparable. {\textcopyright} 2010 IOP Publishing Ltd.",

author = "Ka Xiong and Weichao Wang and Alshareef, {Husam N.} and Gupta, {Rahul P.} and White, {John B.} and Gnade, {Bruce E.} and Kyeongjae Cho",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work is supported by the II-VI Foundation, a private foundation. The authors thank Dr Jeff Sharp for useful suggestions.",

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T1 - Electronic structures and stability of Ni/Bi2Te3 and Co/Bi2Te3 interfaces

AU - Xiong, Ka

AU - Wang, Weichao

AU - Alshareef, Husam N.

AU - Gupta, Rahul P.

AU - White, John B.

AU - Gnade, Bruce E.

AU - Cho, Kyeongjae

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This work is supported by the II-VI Foundation, a private foundation. The authors thank Dr Jeff Sharp for useful suggestions.

PY - 2010/3/4

Y1 - 2010/3/4

N2 - We investigate the electronic structures and stability for Ni/Bi 2Te3, NiTe/Bi2Te3, Co/Bi 2Te3 and CoTe2/Bi2Te3 interfaces by first-principles calculations. It is found that the surface termination strongly affects the band alignment. Ni and Co are found to form Ohmic contacts to Bi2Te3. The interface formation energy for Co/Bi2Te3 interfaces is much lower than that of Ni/Bi2Te3 interfaces. Furthermore, we found that NiTe on Bi2Te3 is more stable than Ni, while the formation energies for Co and CoTe2 on Bi2Te3 are comparable. © 2010 IOP Publishing Ltd.

AB - We investigate the electronic structures and stability for Ni/Bi 2Te3, NiTe/Bi2Te3, Co/Bi 2Te3 and CoTe2/Bi2Te3 interfaces by first-principles calculations. It is found that the surface termination strongly affects the band alignment. Ni and Co are found to form Ohmic contacts to Bi2Te3. The interface formation energy for Co/Bi2Te3 interfaces is much lower than that of Ni/Bi2Te3 interfaces. Furthermore, we found that NiTe on Bi2Te3 is more stable than Ni, while the formation energies for Co and CoTe2 on Bi2Te3 are comparable. © 2010 IOP Publishing Ltd.

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UR - https://iopscience.iop.org/article/10.1088/0022-3727/43/11/115303

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DO - 10.1088/0022-3727/43/11/115303

M3 - Article

SN - 0022-3727

VL - 43

SP - 115303

JO - Journal of Physics D: Applied Physics

JF - Journal of Physics D: Applied Physics

IS - 11

ER -

Electronic structures and stability of Ni/Bi2Te3 and Co/Bi2Te3 interfaces

Abstract

Bibliographical note

ASJC Scopus subject areas

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