# Non-Majorana origin of anomalous current-phase relation and Josephson diode effect in Bi            <sub>2</sub>            Se            <sub>3</sub>            /NbSe            <sub>2</sub>            Josephson junctions

https://mdr.nims.go.jp/datasets/056648ee-ee5c-466c-9482-66837ec8f22a

## File

- [sciadv.adw6925.pdf](https://mdr.nims.go.jp/filesets/a467f1fc-f7bc-43b1-8670-69ca6c5674c8/download) ([Detail](https://mdr.nims.go.jp/filesets/a467f1fc-f7bc-43b1-8670-69ca6c5674c8.md))

## Id

056648ee-ee5c-466c-9482-66837ec8f22a

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-04-03T02:27:11.191399Z

## Updated at

2026-04-03T06:02:44.662399Z

## Published at

2026-04-03T07:27:41.179708Z

## Doi



## First published url

https://doi.org/10.1126/sciadv.adw6925

## Date published

2025-06-13

## Recorded date published

2025-6-13

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Non-Majorana origin of anomalous current-phase relation and Josephson diode
    effect in Bi            <sub>2</sub>            Se            <sub>3</sub>            /NbSe            <sub>2</sub>            Josephson
    junctions
  title_type: original
  lang: en

## Description

- description: Josephson junctions (JJs) are key to superconducting quantum technologies
    and the search for self-­ conjugate quasiparticles potentially useful for fault-­
    tolerant quantum computing. In topological insulator (TI)–based JJs, measuring
    the current-­ phase relation (CPR) can reveal unconventional effects such as Majorana
    bound states (MBS) and nonreciprocal transport. However, reconstructing CPR as
    a function of magnetic field has not been attempted. Here, we present a platform
    for field-­ dependent CPR measurements in planar JJs made of NbSe2 and few-­ layer
    Bi2Se3. When a flux quantum Φ0 threads the junction, we observe anomalous peak-­
    dip CPR structure and nonreciprocal supercurrent flow. We show that these arise
    from a nonuniform supercurrent distribution that also leads to a robust and tunable
    Josephson diode effect. Furthermore, despite numerous previous studies, we find
    no evidence of MBS. Our results establish magnetic field–dependent CPR as a powerful
    probe of TI-­ based superconducting devices and offer design strategies for nonreciprocal
    superconducting electronics.
  description_type: abstract
  lang: und

## Creator

- name: Andrei Kudriashov
  role: author
- name: Xiangyu Zhou
  role: author
- name: Razmik A. Hovhannisyan
  role: author
- name: Alexander S. Frolov
  role: author
- name: Leonid Elesin
  role: author
- name: Yi Bo Wang
  role: author
- name: Ekaterina V. Zharkova
  role: author
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
- name: Zheng Liu
  role: author
- name: Kostya S. Novoselov
  role: author
- name: Lada V. Yashina
  role: author
- name: Xin Zhou
  role: author
- name: Denis A. Bandurin
  role: author

## Contact agent



## Publisher

organization: American Association for the Advancement of Science (AAAS)

## Managing organization



## Keyword

- subject: Josephson junctions
  schema: not_defined
- subject: 'current-phase relation (CPR)
    '
  schema: not_defined
- subject: Bi2Se3/NbSe2
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Science Advances
  issn: '23752548'
  volume: '11'
  issue: '24'
  article_number: eadw6925

## Conference



## Related item



## Funding



## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: a467f1fc-f7bc-43b1-8670-69ca6c5674c8
  filename: sciadv.adw6925.pdf
  content_type: application/pdf
  size: 3816744
  md5: a65e96c6d6991f458627158d584ba70d

## Thumbnail

fileset_id: a467f1fc-f7bc-43b1-8670-69ca6c5674c8
filename: sciadv.adw6925.pdf