# Noncentrosymmetric superconductor                    <math>                      <mrow>                        <mi>BaRh</mi>                        <msub>                          <mi>Si</mi>                          <mn>2</mn>                        </msub>                      </mrow>                    </math>

https://mdr.nims.go.jp/datasets/189c8e00-47a1-4215-9bde-90b2d363372d

## File

- [Manuscript+FIgures _BM13697.pdf](https://mdr.nims.go.jp/filesets/5c0baa9f-ba50-4e99-b011-99a85c71befc/download) ([Detail](https://mdr.nims.go.jp/filesets/5c0baa9f-ba50-4e99-b011-99a85c71befc.md))

## Id

189c8e00-47a1-4215-9bde-90b2d363372d

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-04-30T10:44:49.430925Z

## Updated at

2026-04-30T23:49:51.705928Z

## Published at

2026-05-01T03:23:36.824673Z

## Doi

https://doi.org/10.48505/nims.6270

## First published url

https://doi.org/10.1103/rx78-l97k

## Date published

2026-04-27

## Recorded date published

2026-4

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Noncentrosymmetric superconductor                    <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">                      <mml:mrow>                        <mml:mi>BaRh</mml:mi>                        <mml:msub>                          <mml:mi
    mathvariant="normal">Si</mml:mi>                          <mml:mn>2</mml:mn>                        </mml:msub>                      </mml:mrow>                    </mml:math>
  title_type: original
  lang: en

## Description

- description: 'Barium-rhodium silicide BaRhSi2 has been successfully synthesized
    using a high-pressure technique at 6GPa. X-ray Rietveld analysis and scanning
    transmission electron microscopy studies revealed that BaRhSi2 is isostructural
    to BaIrSi2, within the noncentrosymmetric space group C2221 with the lattice parameters:
    a = 14.9777(1) Å, b = 8.0517(1) Å and c = 8.0551(1) Å. Electrical resistivity,
    magnetic moment, and specific heat measurements indicate that BaRhSi2 is a type-II
    superconductor with a critical temperature Tc ~ 5.1 K, an upper critical field
    Hc2(0) ~ 32 kOe and a Ginzburg-Landau parameter kGL ~ 56. The superconductivity
    is a Bardeen-Cooper-Schrieffer (BCS)-like state with moderate electron-phonon
    coupling lep ~ 0.6 and weak electron correlation lee ~ 0.1. Phonon mediation seems
    to be dominant for the Cooper pairing. The ab initio calculations revealed that
    BaRhSi2 has three pairs of Fermi surfaces split by spin-orbit coupling. The band
    splitting energy is around DASO ~ 0.03 eV near EF, which is rather smaller than
    that (~ 0.07 eV) in BaIrSi2.'
  description_type: abstract
  lang: und

## Creator

- name: Masaaki Isobe
  role: author
  orcid: https://orcid.org/0000-0002-3201-8489
- name: Koji Kimoto
  role: author
  orcid: https://orcid.org/0000-0002-3927-0492
- name: Masao Arai
  role: author
  orcid: https://orcid.org/0000-0003-0088-5649
- name: Taras Kolodiazhnyi
  role: author
  orcid: https://orcid.org/0000-0002-9630-9461
- name: Eiji Takayama-Muromachi
  role: author
  orcid: https://orcid.org/0000-0001-7819-4317

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: Superconductivity
  schema: not_defined
- subject: Superconductor
  schema: not_defined
- subject: BaRhSi2
  schema: not_defined
- subject: High-pressure synthesis
  schema: not_defined

## Rights

- description: "©2026 American Physical Society"
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Physical Review B
  issn: '24699950'
  volume: '113'
  issue: '13'
  article_number: '134525'

## Conference



## Related item



## Funding

- funder_name: National Institute for Materials Science
- identifier: 16K06712
  funder_name: Japan Society for the Promotion of Science
- identifier: 19K03755
  funder_name: Japan Society for the Promotion of Science

## 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



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## Fileset

- id: 5c0baa9f-ba50-4e99-b011-99a85c71befc
  filename: Manuscript+FIgures _BM13697.pdf
  content_type: application/pdf
  size: 29980803
  md5: 4845804bd0a6b6faafefa8009a342a15

## Thumbnail

fileset_id: 5c0baa9f-ba50-4e99-b011-99a85c71befc
filename: Manuscript+FIgures _BM13697.pdf