Co1-xFexS2: Albnable source of highly spin-polarized electrons

L. Wang, K. Umemoto, R. M. Wentzcovitch, T. Y. Chen, C. L. Chien, J. G. Checkelsky, J. C. Eckert, E. D. Dahlberg, C. Leighton

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

In the emerging field of spin-electronics ideal ferromagnetic electron sources would not only possess a high degree of spin polarization, but would also offer control over the magnitude of this polarization. We demonstrate here that a simple scheme can be utilized to control both the magnitude and the sign of the spin polarization of ferromagnetic CoS2, which we probe with a variety of techniques. The position of the Fermi level is fine-tuned by solid solution alloying with the isostructural diamagnetic semiconductor FeS 2, leading to tunable spin polarization of up to 85%.

Original languageEnglish (US)
Article number056602
JournalPhysical Review Letters
Volume94
Issue number5
DOIs
StatePublished - Feb 11 2005

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polarization
electrons
electron sources
alloying
emerging
solid solutions
probes
electronics

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Wang, L., Umemoto, K., Wentzcovitch, R. M., Chen, T. Y., Chien, C. L., Checkelsky, J. G., ... Leighton, C. (2005). Co1-xFexS2: Albnable source of highly spin-polarized electrons. Physical Review Letters, 94(5), [056602]. https://doi.org/10.1103/PhysRevLett.94.056602

Co1-xFexS2 : Albnable source of highly spin-polarized electrons. / Wang, L.; Umemoto, K.; Wentzcovitch, R. M.; Chen, T. Y.; Chien, C. L.; Checkelsky, J. G.; Eckert, J. C.; Dahlberg, E. D.; Leighton, C.

In: Physical Review Letters, Vol. 94, No. 5, 056602, 11.02.2005.

Research output: Contribution to journalArticle

Wang, L, Umemoto, K, Wentzcovitch, RM, Chen, TY, Chien, CL, Checkelsky, JG, Eckert, JC, Dahlberg, ED & Leighton, C 2005, 'Co1-xFexS2: Albnable source of highly spin-polarized electrons', Physical Review Letters, vol. 94, no. 5, 056602. https://doi.org/10.1103/PhysRevLett.94.056602
Wang L, Umemoto K, Wentzcovitch RM, Chen TY, Chien CL, Checkelsky JG et al. Co1-xFexS2: Albnable source of highly spin-polarized electrons. Physical Review Letters. 2005 Feb 11;94(5). 056602. https://doi.org/10.1103/PhysRevLett.94.056602
Wang, L. ; Umemoto, K. ; Wentzcovitch, R. M. ; Chen, T. Y. ; Chien, C. L. ; Checkelsky, J. G. ; Eckert, J. C. ; Dahlberg, E. D. ; Leighton, C. / Co1-xFexS2 : Albnable source of highly spin-polarized electrons. In: Physical Review Letters. 2005 ; Vol. 94, No. 5.
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