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Structural and electronic inhomogeneity of superconducting Nb-doped Bi2Se3

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Structural and electronic inhomogeneity of superconducting Nb-doped Bi2Se3. / Kevy, Simone M.; Lund, Henriette E.; Wollesen, Laura et al.

In: Physical Review B, Vol. 103, No. 8, 085107, 02.2021.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

Kevy, SM, Lund, HE, Wollesen, L, Dalgaard, KJ, Hsu, YT, Wiedmann, S, Bianchi, M, Holt, AJU, Curcio, D, Biswas, D, Jones, AJH, Volckaert, K, Cacho, C, Dudin, P, Hofmann, P & Bremholm, M 2021, 'Structural and electronic inhomogeneity of superconducting Nb-doped Bi2Se3', Physical Review B, vol. 103, no. 8, 085107. https://doi.org/10.1103/PhysRevB.103.085107

APA

Kevy, S. M., Lund, H. E., Wollesen, L., Dalgaard, K. J., Hsu, Y. T., Wiedmann, S., Bianchi, M., Holt, A. J. U., Curcio, D., Biswas, D., Jones, A. J. H., Volckaert, K., Cacho, C., Dudin, P., Hofmann, P., & Bremholm, M. (2021). Structural and electronic inhomogeneity of superconducting Nb-doped Bi2Se3. Physical Review B, 103(8), [085107]. https://doi.org/10.1103/PhysRevB.103.085107

CBE

Kevy SM, Lund HE, Wollesen L, Dalgaard KJ, Hsu YT, Wiedmann S, Bianchi M, Holt AJU, Curcio D, Biswas D, et al. 2021. Structural and electronic inhomogeneity of superconducting Nb-doped Bi2Se3. Physical Review B. 103(8):Article 085107. https://doi.org/10.1103/PhysRevB.103.085107

MLA

Vancouver

Kevy SM, Lund HE, Wollesen L, Dalgaard KJ, Hsu YT, Wiedmann S et al. Structural and electronic inhomogeneity of superconducting Nb-doped Bi2Se3. Physical Review B. 2021 Feb;103(8). 085107. https://doi.org/10.1103/PhysRevB.103.085107

Author

Kevy, Simone M. ; Lund, Henriette E. ; Wollesen, Laura et al. / Structural and electronic inhomogeneity of superconducting Nb-doped Bi2Se3. In: Physical Review B. 2021 ; Vol. 103, No. 8.

Bibtex

@article{a7df1af72adf474e9c4f13f4969f7dd4,
title = "Structural and electronic inhomogeneity of superconducting Nb-doped Bi2Se3",
abstract = "The crystal structure, electronic structure, and transport properties of crystals with the nominal composition Nb0.25Bi2Se3 are investigated. X-ray diffraction reveals that the as-grown crystals display phase segregation and contain major contributions of BiSe and the superconducting misfit layer compound (BiSe)1.1NbSe2. The inhomogeneous character of the samples is also reflected in the electronic structure and transport properties of different single crystals. Angle-resolved photoemission spectroscopy (ARPES) reveals an electronic structure that resembles poor-quality Bi2Se3 with an ill-defined topological surface state. High-quality topological surface states are instead observed when using a highly focused beam size, i.e., nanoARPES. While the superconducting transition temperature is found to vary between 2.5 and 3.5 K, the majority of the bulk single crystals does not exhibit a zero-resistance state suggesting filamentary superconductivity in the materials. Susceptibility measurements of the system together with the temperature dependence of the coherence length extracted from the upper critical field are consistent with conventional BCS superconductivity of a type II superconductor.",
author = "Kevy, {Simone M.} and Lund, {Henriette E.} and Laura Wollesen and Dalgaard, {Kirstine J.} and Hsu, {Yu Te} and Steffen Wiedmann and Marco Bianchi and Holt, {Ann Julie Utne} and Davide Curcio and Deepnarayan Biswas and Jones, {Alfred J.H.} and Klara Volckaert and Cephise Cacho and Pavel Dudin and Philip Hofmann and Martin Bremholm",
note = "Publisher Copyright: {\textcopyright} 2021 American Physical Society. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.",
year = "2021",
month = feb,
doi = "10.1103/PhysRevB.103.085107",
language = "English",
volume = "103",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "8",

}

RIS

TY - JOUR

T1 - Structural and electronic inhomogeneity of superconducting Nb-doped Bi2Se3

AU - Kevy, Simone M.

AU - Lund, Henriette E.

AU - Wollesen, Laura

AU - Dalgaard, Kirstine J.

AU - Hsu, Yu Te

AU - Wiedmann, Steffen

AU - Bianchi, Marco

AU - Holt, Ann Julie Utne

AU - Curcio, Davide

AU - Biswas, Deepnarayan

AU - Jones, Alfred J.H.

AU - Volckaert, Klara

AU - Cacho, Cephise

AU - Dudin, Pavel

AU - Hofmann, Philip

AU - Bremholm, Martin

N1 - Publisher Copyright: © 2021 American Physical Society. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/2

Y1 - 2021/2

N2 - The crystal structure, electronic structure, and transport properties of crystals with the nominal composition Nb0.25Bi2Se3 are investigated. X-ray diffraction reveals that the as-grown crystals display phase segregation and contain major contributions of BiSe and the superconducting misfit layer compound (BiSe)1.1NbSe2. The inhomogeneous character of the samples is also reflected in the electronic structure and transport properties of different single crystals. Angle-resolved photoemission spectroscopy (ARPES) reveals an electronic structure that resembles poor-quality Bi2Se3 with an ill-defined topological surface state. High-quality topological surface states are instead observed when using a highly focused beam size, i.e., nanoARPES. While the superconducting transition temperature is found to vary between 2.5 and 3.5 K, the majority of the bulk single crystals does not exhibit a zero-resistance state suggesting filamentary superconductivity in the materials. Susceptibility measurements of the system together with the temperature dependence of the coherence length extracted from the upper critical field are consistent with conventional BCS superconductivity of a type II superconductor.

AB - The crystal structure, electronic structure, and transport properties of crystals with the nominal composition Nb0.25Bi2Se3 are investigated. X-ray diffraction reveals that the as-grown crystals display phase segregation and contain major contributions of BiSe and the superconducting misfit layer compound (BiSe)1.1NbSe2. The inhomogeneous character of the samples is also reflected in the electronic structure and transport properties of different single crystals. Angle-resolved photoemission spectroscopy (ARPES) reveals an electronic structure that resembles poor-quality Bi2Se3 with an ill-defined topological surface state. High-quality topological surface states are instead observed when using a highly focused beam size, i.e., nanoARPES. While the superconducting transition temperature is found to vary between 2.5 and 3.5 K, the majority of the bulk single crystals does not exhibit a zero-resistance state suggesting filamentary superconductivity in the materials. Susceptibility measurements of the system together with the temperature dependence of the coherence length extracted from the upper critical field are consistent with conventional BCS superconductivity of a type II superconductor.

UR - http://www.scopus.com/inward/record.url?scp=85101906347&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.103.085107

DO - 10.1103/PhysRevB.103.085107

M3 - Journal article

AN - SCOPUS:85101906347

VL - 103

JO - Physical Review B

JF - Physical Review B

SN - 2469-9950

IS - 8

M1 - 085107

ER -