Oscillatory surface dichroism of the insulating topological insulator Bi2Te2Se

M. Neupane; S. Basak; N. Alidoust; S. Y. Xu; Chang Liu; I. Belopolski; G. Bian; J. Xiong; H. Ji; S. Jia; S. K. Mo; M. Bissen; M. Severson; H. Lin; N. P. Ong; T. Durakiewicz; R. J. Cava; A. Bansil; M. Z. Hasan

doi:10.1103/PhysRevB.88.165129

Oscillatory surface dichroism of the insulating topological insulator Bi₂Te₂Se

M. Neupane, S. Basak, N. Alidoust, S. Y. Xu, Chang Liu, I. Belopolski, G. Bian, J. Xiong, H. Ji, S. Jia, S. K. Mo, M. Bissen, M. Severson, H. Lin, N. P. Ong, T. Durakiewicz, R. J. Cava, A. Bansil, M. Z. Hasan

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Abstract

Using circular dichroism-angle resolved photoemission spectroscopy, we report a study of the effect of angular momentum transfer between polarized photons and topological surface states on the surface of the insulating topological insulator Bi₂Te₂Se. The photoelectron dichroism is found to be strongly modulated by the frequency of the helical photons including a dramatic sign flip. Our results suggest that the observed dichroism and its sign flip are consequences of strong coupling between the photon field and the spin-orbit nature of the Dirac modes on the surface. Our studies reveal the intrinsic dichroic behavior of topological surface states and point toward the potential utility of bulk insulating topological insulators in opto-spintronics device applications.

Original language	English (US)
Article number	165129
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	88
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevB.88.165129
State	Published - Oct 21 2013

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.88.165129

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Neupane, M., Basak, S., Alidoust, N., Xu, S. Y., Liu, C., Belopolski, I., Bian, G., Xiong, J., Ji, H., Jia, S., Mo, S. K., Bissen, M., Severson, M., Lin, H., Ong, N. P., Durakiewicz, T., Cava, R. J., Bansil, A., & Hasan, M. Z. (2013). Oscillatory surface dichroism of the insulating topological insulator Bi₂Te₂Se. Physical Review B - Condensed Matter and Materials Physics, 88(16), Article 165129. https://doi.org/10.1103/PhysRevB.88.165129

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title = "Oscillatory surface dichroism of the insulating topological insulator Bi2Te2Se",

abstract = "Using circular dichroism-angle resolved photoemission spectroscopy, we report a study of the effect of angular momentum transfer between polarized photons and topological surface states on the surface of the insulating topological insulator Bi2Te2Se. The photoelectron dichroism is found to be strongly modulated by the frequency of the helical photons including a dramatic sign flip. Our results suggest that the observed dichroism and its sign flip are consequences of strong coupling between the photon field and the spin-orbit nature of the Dirac modes on the surface. Our studies reveal the intrinsic dichroic behavior of topological surface states and point toward the potential utility of bulk insulating topological insulators in opto-spintronics device applications.",

author = "M. Neupane and S. Basak and N. Alidoust and Xu, {S. Y.} and Chang Liu and I. Belopolski and G. Bian and J. Xiong and H. Ji and S. Jia and Mo, {S. K.} and M. Bissen and M. Severson and H. Lin and Ong, {N. P.} and T. Durakiewicz and Cava, {R. J.} and A. Bansil and Hasan, {M. Z.}",

year = "2013",

month = oct,

day = "21",

doi = "10.1103/PhysRevB.88.165129",

language = "English (US)",

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journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Physical Society",

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Neupane, M, Basak, S, Alidoust, N, Xu, SY, Liu, C, Belopolski, I, Bian, G, Xiong, J, Ji, H, Jia, S, Mo, SK, Bissen, M, Severson, M, Lin, H, Ong, NP, Durakiewicz, T, Cava, RJ, Bansil, A & Hasan, MZ 2013, 'Oscillatory surface dichroism of the insulating topological insulator Bi₂Te₂Se', Physical Review B - Condensed Matter and Materials Physics, vol. 88, no. 16, 165129. https://doi.org/10.1103/PhysRevB.88.165129

TY - JOUR

T1 - Oscillatory surface dichroism of the insulating topological insulator Bi2Te2Se

AU - Neupane, M.

AU - Basak, S.

AU - Alidoust, N.

AU - Xu, S. Y.

AU - Liu, Chang

AU - Belopolski, I.

AU - Bian, G.

AU - Xiong, J.

AU - Ji, H.

AU - Jia, S.

AU - Mo, S. K.

AU - Bissen, M.

AU - Severson, M.

AU - Lin, H.

AU - Ong, N. P.

AU - Durakiewicz, T.

AU - Cava, R. J.

AU - Bansil, A.

AU - Hasan, M. Z.

PY - 2013/10/21

Y1 - 2013/10/21

N2 - Using circular dichroism-angle resolved photoemission spectroscopy, we report a study of the effect of angular momentum transfer between polarized photons and topological surface states on the surface of the insulating topological insulator Bi2Te2Se. The photoelectron dichroism is found to be strongly modulated by the frequency of the helical photons including a dramatic sign flip. Our results suggest that the observed dichroism and its sign flip are consequences of strong coupling between the photon field and the spin-orbit nature of the Dirac modes on the surface. Our studies reveal the intrinsic dichroic behavior of topological surface states and point toward the potential utility of bulk insulating topological insulators in opto-spintronics device applications.

AB - Using circular dichroism-angle resolved photoemission spectroscopy, we report a study of the effect of angular momentum transfer between polarized photons and topological surface states on the surface of the insulating topological insulator Bi2Te2Se. The photoelectron dichroism is found to be strongly modulated by the frequency of the helical photons including a dramatic sign flip. Our results suggest that the observed dichroism and its sign flip are consequences of strong coupling between the photon field and the spin-orbit nature of the Dirac modes on the surface. Our studies reveal the intrinsic dichroic behavior of topological surface states and point toward the potential utility of bulk insulating topological insulators in opto-spintronics device applications.

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JF - Physical Review B - Condensed Matter and Materials Physics

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M1 - 165129

ER -

Oscillatory surface dichroism of the insulating topological insulator Bi₂Te₂Se

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