Current-phase relation of a short multi-mode Bi2Se3 topological insulator nanoribbon Josephson junction with ballistic transport modes

Ananthu P. Surendran; Domenico Montemurro; Gunta Kunakova; Xavier Palermo; Kiryl Niherysh; Edoardo Trabaldo; Dmitry S. Golubev; Jana Andzane; Donats Erts; Floriana Lombardi; Thilo Bauch

doi:10.1088/1361-6668/accf40

Current-phase relation of a short multi-mode Bi₂Se₃ topological insulator nanoribbon Josephson junction with ballistic transport modes

Ananthu P. Surendran, Domenico Montemurro, Gunta Kunakova, Xavier Palermo, Kiryl Niherysh, Edoardo Trabaldo, Dmitry S. Golubev, Jana Andzane, Donats Erts, Floriana Lombardi, Thilo Bauch^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

2 Citations (Scopus)

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Abstract

We used the asymmetric superconducting quantum interference device (SQUID) technique to extract the current phase relation (CPR) of a Josephson junction with a 3D-topological insulator (3D-TI) Bi₂Se₃ nanobelt as the barrier. The obtained CPR shows deviations from the standard sinusoidal CPR with a pronounced forward skewness. At temperatures below 200 mK, the junction skewness values are above the zero temperature limit for short diffusive junctions. Fitting of the extracted CPR shows that most of the supercurrent is carried by ballistic topological surface states (TSSs), with a small contribution of diffusive channels primarily due to the bulk. These findings are instrumental in engineering devices that can fully exploit the properties of the topologically protected surface states of 3D TIs.

Original language	English
Article number	064003
Pages (from-to)	1-9
Number of pages	9
Journal	Superconductor Science and Technology
Volume	36
Issue number	6
DOIs	https://doi.org/10.1088/1361-6668/accf40
Publication status	Published - Jun 2023
MoE publication type	A1 Journal article-refereed

Keywords

current phase relation
Josephson junction
SQUID
topological insulator

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10.1088/1361-6668/accf40Licence: CC BY

Current-phase relation of a short multi-mode Bi2Se3 topological insulator nanoribbon Josephson junction with ballistic transport modesFinal published version, 1.53 MBLicence: CC BY

Cite this

Surendran, A. P., Montemurro, D., Kunakova, G., Palermo, X., Niherysh, K., Trabaldo, E., Golubev, D. S., Andzane, J., Erts, D., Lombardi, F., & Bauch, T. (2023). Current-phase relation of a short multi-mode Bi₂Se₃ topological insulator nanoribbon Josephson junction with ballistic transport modes. Superconductor Science and Technology, 36(6), 1-9. Article 064003. https://doi.org/10.1088/1361-6668/accf40

@article{b4d00be79d2d4dc9a8b006c5c7725bcb,

title = "Current-phase relation of a short multi-mode Bi2Se3 topological insulator nanoribbon Josephson junction with ballistic transport modes",

abstract = "We used the asymmetric superconducting quantum interference device (SQUID) technique to extract the current phase relation (CPR) of a Josephson junction with a 3D-topological insulator (3D-TI) Bi2Se3 nanobelt as the barrier. The obtained CPR shows deviations from the standard sinusoidal CPR with a pronounced forward skewness. At temperatures below 200 mK, the junction skewness values are above the zero temperature limit for short diffusive junctions. Fitting of the extracted CPR shows that most of the supercurrent is carried by ballistic topological surface states (TSSs), with a small contribution of diffusive channels primarily due to the bulk. These findings are instrumental in engineering devices that can fully exploit the properties of the topologically protected surface states of 3D TIs.",

keywords = "current phase relation, Josephson junction, SQUID, topological insulator",

author = "Surendran, {Ananthu P.} and Domenico Montemurro and Gunta Kunakova and Xavier Palermo and Kiryl Niherysh and Edoardo Trabaldo and Golubev, {Dmitry S.} and Jana Andzane and Donats Erts and Floriana Lombardi and Thilo Bauch",

note = "Funding Information: This work was supported by the European Union{\textquoteright}s H2020 under the Marie Curie Actions (No. 766025-QuESTech). This work has been supported by the European Union{\textquoteright}s Horizon 2020 Research and Innovation Program (Grant Agreement No. 766714/HiTIMe). K Niherysh acknowledges the financial support of the {\textquoteleft}Strengthening of the capacity of doctoral studies at the University of Latvia within the framework of the new doctoral model{\textquoteright}, identification no. 8.2.2.0/20/I/006. | openaire: EC/H2020/766025/EU//QuESTech | openaire: EC/H2020/766714/EU//HiTIMe ",

year = "2023",

month = jun,

doi = "10.1088/1361-6668/accf40",

language = "English",

volume = "36",

pages = "1--9",

journal = "Superconductor Science and Technology",

issn = "0953-2048",

publisher = "Institute of Physics Publishing ",

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Surendran, AP, Montemurro, D, Kunakova, G, Palermo, X, Niherysh, K, Trabaldo, E, Golubev, DS, Andzane, J, Erts, D, Lombardi, F & Bauch, T 2023, 'Current-phase relation of a short multi-mode Bi₂Se₃ topological insulator nanoribbon Josephson junction with ballistic transport modes', Superconductor Science and Technology, vol. 36, no. 6, 064003, pp. 1-9. https://doi.org/10.1088/1361-6668/accf40

Current-phase relation of a short multi-mode Bi₂Se₃ topological insulator nanoribbon Josephson junction with ballistic transport modes. / Surendran, Ananthu P.; Montemurro, Domenico; Kunakova, Gunta et al.
In: Superconductor Science and Technology, Vol. 36, No. 6, 064003, 06.2023, p. 1-9.

Research output: Contribution to journal › Article › Scientific › peer-review

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T1 - Current-phase relation of a short multi-mode Bi2Se3 topological insulator nanoribbon Josephson junction with ballistic transport modes

AU - Surendran, Ananthu P.

AU - Montemurro, Domenico

AU - Kunakova, Gunta

AU - Palermo, Xavier

AU - Niherysh, Kiryl

AU - Trabaldo, Edoardo

AU - Golubev, Dmitry S.

AU - Andzane, Jana

AU - Erts, Donats

AU - Lombardi, Floriana

AU - Bauch, Thilo

N1 - Funding Information: This work was supported by the European Union’s H2020 under the Marie Curie Actions (No. 766025-QuESTech). This work has been supported by the European Union’s Horizon 2020 Research and Innovation Program (Grant Agreement No. 766714/HiTIMe). K Niherysh acknowledges the financial support of the ‘Strengthening of the capacity of doctoral studies at the University of Latvia within the framework of the new doctoral model’, identification no. 8.2.2.0/20/I/006. | openaire: EC/H2020/766025/EU//QuESTech | openaire: EC/H2020/766714/EU//HiTIMe

PY - 2023/6

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N2 - We used the asymmetric superconducting quantum interference device (SQUID) technique to extract the current phase relation (CPR) of a Josephson junction with a 3D-topological insulator (3D-TI) Bi2Se3 nanobelt as the barrier. The obtained CPR shows deviations from the standard sinusoidal CPR with a pronounced forward skewness. At temperatures below 200 mK, the junction skewness values are above the zero temperature limit for short diffusive junctions. Fitting of the extracted CPR shows that most of the supercurrent is carried by ballistic topological surface states (TSSs), with a small contribution of diffusive channels primarily due to the bulk. These findings are instrumental in engineering devices that can fully exploit the properties of the topologically protected surface states of 3D TIs.

AB - We used the asymmetric superconducting quantum interference device (SQUID) technique to extract the current phase relation (CPR) of a Josephson junction with a 3D-topological insulator (3D-TI) Bi2Se3 nanobelt as the barrier. The obtained CPR shows deviations from the standard sinusoidal CPR with a pronounced forward skewness. At temperatures below 200 mK, the junction skewness values are above the zero temperature limit for short diffusive junctions. Fitting of the extracted CPR shows that most of the supercurrent is carried by ballistic topological surface states (TSSs), with a small contribution of diffusive channels primarily due to the bulk. These findings are instrumental in engineering devices that can fully exploit the properties of the topologically protected surface states of 3D TIs.

KW - current phase relation

KW - Josephson junction

KW - SQUID

KW - topological insulator

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U2 - 10.1088/1361-6668/accf40

DO - 10.1088/1361-6668/accf40

M3 - Article

AN - SCOPUS:85159725586

SN - 0953-2048

VL - 36

SP - 1

EP - 9

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

IS - 6

M1 - 064003

ER -

Current-phase relation of a short multi-mode Bi₂Se₃ topological insulator nanoribbon Josephson junction with ballistic transport modes

Abstract

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QuESTech: QUantum Electronics Science and TECHnology training

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Current-phase relation of a short multi-mode Bi2Se3 topological insulator nanoribbon Josephson junction with ballistic transport modes

Abstract

Keywords

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Projects

QuESTech: QUantum Electronics Science and TECHnology training

Cite this

Current-phase relation of a short multi-mode Bi₂Se₃ topological insulator nanoribbon Josephson junction with ballistic transport modes