Evidence of a Nodal Line in the Superconducting Gap Symmetry of Noncentrosymmetric (2019)
- Authors:
- Autor USP: MACHADO, ANTONIO JEFFERSON DA SILVA - EEL
- Unidade: EEL
- DOI: 10.1103/PhysRevLett.122.147001
- Subjects: SUPERCONDUTIVIDADE; FÍSICA DA MATÉRIA CONDENSADA
- Agências de fomento:
- Language: Inglês
- Abstract: The newly discovered noncentrosymmetric superconductor ThCoC 2 exhibits numerous types of unconventional behavior in the field dependent heat capacity data. Here we present the first measurement of the gap symmetry of ThCoC 2 by muon spin rotation and relaxation ( μ SR ) measurements. The temperature dependence of the magnetic penetration depth measured using the transverse field μ SR experiment reveals the evidence of a nodal pairing symmetry. To understand this finding, we carry out calculations of the superconducting pairing eigenvalue and eigenfunction (pairing symmetry) due to the spin-fluctuation mechanism by directly implementing the ab initio band structures. We find that the system possesses a single Fermi surface with considerable three dimensionality and a strong nesting along the k z direction. Such nesting promotes a superconducting state with a cos k z -like pairing symmetry with a prominent nodal line on the k z = ± π / 2 plane. The result agrees well with the experimental data.
- Source:
- Título: Physical review letters
- ISSN: 00319007
- Volume/Número/Paginação/Ano: v. 122, p.147001-147001-4, 2019
- Status:
- Artigo possui versão em acesso aberto em repositório (Green Open Access)
- Versão do Documento:
- Versão submetida (Pré-print)
- Acessar versão aberta:
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ABNT
BHATTACHARYYA, Amitava et al. Evidence of a Nodal Line in the Superconducting Gap Symmetry of Noncentrosymmetric. Physical review letters, v. 122, p. 147001-147001-4, 2019Tradução . . Disponível em: https://doi.org/10.1103/PhysRevLett.122.147001. Acesso em: 02 abr. 2026. -
APA
Bhattacharyya, A., HILLIER, A. D., Manfrinetti, P., Adroja, D., Panda, K., SAHA, S. U. R. A. B. H. I., et al. (2019). Evidence of a Nodal Line in the Superconducting Gap Symmetry of Noncentrosymmetric. Physical review letters, 122, 147001-147001-4. doi:10.1103/PhysRevLett.122.147001 -
NLM
Bhattacharyya A, HILLIER AD, Manfrinetti P, Adroja D, Panda K, SAHA SURABHI, DAS TANMOY, Machado AJ da S, Cigarroa OV, Grant TW, Fisk Z. Evidence of a Nodal Line in the Superconducting Gap Symmetry of Noncentrosymmetric [Internet]. Physical review letters. 2019 ; 122 147001-147001-4.[citado 2026 abr. 02 ] Available from: https://doi.org/10.1103/PhysRevLett.122.147001 -
Vancouver
Bhattacharyya A, HILLIER AD, Manfrinetti P, Adroja D, Panda K, SAHA SURABHI, DAS TANMOY, Machado AJ da S, Cigarroa OV, Grant TW, Fisk Z. Evidence of a Nodal Line in the Superconducting Gap Symmetry of Noncentrosymmetric [Internet]. Physical review letters. 2019 ; 122 147001-147001-4.[citado 2026 abr. 02 ] Available from: https://doi.org/10.1103/PhysRevLett.122.147001 - Doping-induced superconductivity of ZrB 2 and HfB 2
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