Observation of the spin-polarized surface state in a noncentrosymmetric superconductor BiPd

Madhab Neupane; Nasser Alidoust; M. Mofazzel Hosen; Jian Xin Zhu; Klauss Dimitri; Su Yang Xu; Nagendra Dhakal; Raman Sankar; Ilya Belopolski; Daniel S. Sanchez; Tay Rong Chang; Horng Tay Jeng; Koji Miyamoto; Taichi Okuda; Hsin Lin; Arun Bansil; Dariusz Kaczorowski; Fangcheng Chou; M. Zahid Hasan; Tomasz Durakiewicz

doi:10.1038/ncomms13315

Observation of the spin-polarized surface state in a noncentrosymmetric superconductor BiPd

Madhab Neupane, Nasser Alidoust, M. Mofazzel Hosen, Jian Xin Zhu, Klauss Dimitri, Su Yang Xu, Nagendra Dhakal, Raman Sankar, Ilya Belopolski, Daniel S. Sanchez, Tay Rong Chang, Horng Tay Jeng, Koji Miyamoto, Taichi Okuda, Hsin Lin, Arun Bansil, Dariusz Kaczorowski, Fangcheng Chou, M. Zahid Hasan, Tomasz Durakiewicz

Department of Physics

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47 Citations (Scopus)

Abstract

Recently, noncentrosymmetric superconductor BiPd has attracted considerable research interest due to the possibility of hosting topological superconductivity. Here we report a systematic high-resolution angle-resolved photoemission spectroscopy (ARPES) and spin-resolved ARPES study of the normal state electronic and spin properties of BiPd. Our experimental results show the presence of a surface state at higher-binding energy with the location of Dirac point at around 700 meV below the Fermi level. The detailed photon energy, temperature-dependent and spin-resolved ARPES measurements complemented by our first-principles calculations demonstrate the existence of the spin-polarized surface states at high-binding energy. The absence of such spin-polarized surface states near the Fermi level negates the possibility of a topological superconducting behaviour on the surface. Our direct experimental observation of spin-polarized surface states in BiPd provides critical information that will guide the future search for topological superconductivity in noncentrosymmetric materials.

Original language	English
Article number	13315
Journal	Nature communications
Volume	7
DOIs	https://doi.org/10.1038/ncomms13315
Publication status	Published - 2016

All Science Journal Classification (ASJC) codes

General Chemistry
General Biochemistry,Genetics and Molecular Biology
General Physics and Astronomy

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Neupane, M., Alidoust, N., Hosen, M. M., Zhu, J. X., Dimitri, K., Xu, S. Y., Dhakal, N., Sankar, R., Belopolski, I., Sanchez, D. S., Chang, T. R., Jeng, H. T., Miyamoto, K., Okuda, T., Lin, H., Bansil, A., Kaczorowski, D., Chou, F., Hasan, M. Z., & Durakiewicz, T. (2016). Observation of the spin-polarized surface state in a noncentrosymmetric superconductor BiPd. Nature communications, 7, Article 13315. https://doi.org/10.1038/ncomms13315

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title = "Observation of the spin-polarized surface state in a noncentrosymmetric superconductor BiPd",

abstract = "Recently, noncentrosymmetric superconductor BiPd has attracted considerable research interest due to the possibility of hosting topological superconductivity. Here we report a systematic high-resolution angle-resolved photoemission spectroscopy (ARPES) and spin-resolved ARPES study of the normal state electronic and spin properties of BiPd. Our experimental results show the presence of a surface state at higher-binding energy with the location of Dirac point at around 700 meV below the Fermi level. The detailed photon energy, temperature-dependent and spin-resolved ARPES measurements complemented by our first-principles calculations demonstrate the existence of the spin-polarized surface states at high-binding energy. The absence of such spin-polarized surface states near the Fermi level negates the possibility of a topological superconducting behaviour on the surface. Our direct experimental observation of spin-polarized surface states in BiPd provides critical information that will guide the future search for topological superconductivity in noncentrosymmetric materials.",

author = "Madhab Neupane and Nasser Alidoust and Hosen, {M. Mofazzel} and Zhu, {Jian Xin} and Klauss Dimitri and Xu, {Su Yang} and Nagendra Dhakal and Raman Sankar and Ilya Belopolski and Sanchez, {Daniel S.} and Chang, {Tay Rong} and Jeng, {Horng Tay} and Koji Miyamoto and Taichi Okuda and Hsin Lin and Arun Bansil and Dariusz Kaczorowski and Fangcheng Chou and Hasan, {M. Zahid} and Tomasz Durakiewicz",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2016.",

year = "2016",

doi = "10.1038/ncomms13315",

language = "English",

volume = "7",

journal = "Nature communications",

issn = "2041-1723",

publisher = "Nature Publishing Group",

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Neupane, M, Alidoust, N, Hosen, MM, Zhu, JX, Dimitri, K, Xu, SY, Dhakal, N, Sankar, R, Belopolski, I, Sanchez, DS, Chang, TR, Jeng, HT, Miyamoto, K, Okuda, T, Lin, H, Bansil, A, Kaczorowski, D, Chou, F, Hasan, MZ & Durakiewicz, T 2016, 'Observation of the spin-polarized surface state in a noncentrosymmetric superconductor BiPd', Nature communications, vol. 7, 13315. https://doi.org/10.1038/ncomms13315

TY - JOUR

T1 - Observation of the spin-polarized surface state in a noncentrosymmetric superconductor BiPd

AU - Neupane, Madhab

AU - Alidoust, Nasser

AU - Hosen, M. Mofazzel

AU - Zhu, Jian Xin

AU - Dimitri, Klauss

AU - Xu, Su Yang

AU - Dhakal, Nagendra

AU - Sankar, Raman

AU - Belopolski, Ilya

AU - Sanchez, Daniel S.

AU - Chang, Tay Rong

AU - Jeng, Horng Tay

AU - Miyamoto, Koji

AU - Okuda, Taichi

AU - Lin, Hsin

AU - Bansil, Arun

AU - Kaczorowski, Dariusz

AU - Chou, Fangcheng

AU - Hasan, M. Zahid

AU - Durakiewicz, Tomasz

PY - 2016

Y1 - 2016

N2 - Recently, noncentrosymmetric superconductor BiPd has attracted considerable research interest due to the possibility of hosting topological superconductivity. Here we report a systematic high-resolution angle-resolved photoemission spectroscopy (ARPES) and spin-resolved ARPES study of the normal state electronic and spin properties of BiPd. Our experimental results show the presence of a surface state at higher-binding energy with the location of Dirac point at around 700 meV below the Fermi level. The detailed photon energy, temperature-dependent and spin-resolved ARPES measurements complemented by our first-principles calculations demonstrate the existence of the spin-polarized surface states at high-binding energy. The absence of such spin-polarized surface states near the Fermi level negates the possibility of a topological superconducting behaviour on the surface. Our direct experimental observation of spin-polarized surface states in BiPd provides critical information that will guide the future search for topological superconductivity in noncentrosymmetric materials.

AB - Recently, noncentrosymmetric superconductor BiPd has attracted considerable research interest due to the possibility of hosting topological superconductivity. Here we report a systematic high-resolution angle-resolved photoemission spectroscopy (ARPES) and spin-resolved ARPES study of the normal state electronic and spin properties of BiPd. Our experimental results show the presence of a surface state at higher-binding energy with the location of Dirac point at around 700 meV below the Fermi level. The detailed photon energy, temperature-dependent and spin-resolved ARPES measurements complemented by our first-principles calculations demonstrate the existence of the spin-polarized surface states at high-binding energy. The absence of such spin-polarized surface states near the Fermi level negates the possibility of a topological superconducting behaviour on the surface. Our direct experimental observation of spin-polarized surface states in BiPd provides critical information that will guide the future search for topological superconductivity in noncentrosymmetric materials.

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SN - 2041-1723

VL - 7

JO - Nature communications

JF - Nature communications

M1 - 13315

ER -

Observation of the spin-polarized surface state in a noncentrosymmetric superconductor BiPd

Abstract

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