Journal article

Magnetic proximity-enhanced Curie temperature of Cr-doped Bi₂Se₃ thin films

Abstract:: We report a study on the transition temperature, T_C, of a Cr-doped Bi2Se3 topological insulator thin film, where an increase in the ferromagnetic onset can provide a pathway towards low-power spintronics applications. Arrott plots, obtained by Cr L_2,3 x-ray magnetic circular dichroism as a function of field at various low temperatures, give a T_C ~7 K. This is similar to the bulk value of the sample, which means that there is no indication the spontaneous magnetization is different near the surface. Evaporation of a thin layer of Co onto the pristine surface of the in-situ cleaved sample increases the ordering temperature to ~19 K. X-ray absorption spectroscopy shows that Cr enters the Bi2Se3 host matrix in a divalent state, and is unchanged by the Co deposition.

Publication status:: Published

Peer review status:: Peer reviewed

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APA Style

Baker, A. A., Figuorea, A. I., Kummer, K., Collins-McIntyre, L. J., Hesjedal, T., & van der Laan, G. (2015). Magnetic proximity-enhanced Curie temperature of Cr-doped Bi₂Se₃ thin films. Physical Review B, 92(9).

MLA Style

Baker, A. A., et al. “Magnetic Proximity-Enhanced Curie Temperature of Cr-Doped Bi₂Se₃ Thin Films.” Physical Review B, vol. 92, no. 9, American Physical Society, 2015.

Chicago Style

Baker, AA, AI Figuorea, K Kummer, LJ Collins-McIntyre, T Hesjedal, and G van der Laan. 2015. “Magnetic Proximity-Enhanced Curie Temperature of Cr-Doped Bi₂Se₃ Thin Films.” Physical Review B 92 (9).
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Baker-et-al-2015-Magnetic-proximity-enhancced-Curie--.pdf

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Publisher copy:: 10.1103/PhysRevB.92.094420

Authors

+ Baker, AA More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Physics
Role:: Author

+ Figuorea, AI More by this author

Role:: Author

+ Kummer, K More by this author

Role:: Author

+ Collins-McIntyre, LJ More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Physics
Role:: Author

+ Hesjedal, T More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Physics
Sub department:: Condensed Matter Physics
Role:: Author

More authors...

+ John Fell Fund More from this funder

Funding agency for:: Hesjedal, T

Publisher:: American Physical Society
Journal:: Physical Review B More from this journal
Volume:: 92
Issue:: 9
Article number:: 094420
Publication date:: 2015-09-11
DOI:: 10.1103/PhysRevB.92.094420
EISSN:: 1550-235X
ISSN:: 0556-2805

Language:: English
Pubs id:: pubs:541269
UUID:: uuid:d6dfdc0f-8ad2-4d12-a8ff-34ce0b713530
Local pid:: pubs:541269
Source identifiers:: 541269
Deposit date:: 2015-10-29

Terms of use

Copyright holder:: American Physical Society
Copyright date:: 2015
Rights statement:: Copyright © 2015 American Physical Society.

Licence:: Terms and Conditions of Use for Oxford University Research Archive

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