Signature of magnetoelectric coupling driven finite momentum pairing in 3D ising superconductor

F. Z. Yang; H. D. Zhang; Saswata Mandal; F. Y. Meng; G. Fabbris; A. H. Said; P. Mercado Lozano; A. Rajapitamahuni; E. Vescovo; C. Nelson; S. Lin; Y. Park; E. M. Clements; T. Z. Ward; H. N. Lee; H. C. Lei; C. X. Liu; H. Miao

doi:10.1038/s41467-025-61882-z

Signature of magnetoelectric coupling driven finite momentum pairing in 3D ising superconductor

F. Z. Yang
, H. D. Zhang
, Saswata Mandal
, F. Y. Meng
, G. Fabbris
, A. H. Said
, P. Mercado Lozano
, A. Rajapitamahuni
, E. Vescovo
, C. Nelson
, S. Lin
, Y. Park
, E. M. Clements
, T. Z. Ward
, H. N. Lee
, H. C. Lei
, C. X. Liu
, H. Miao

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

1 Scopus citations

Abstract

The finite momentum superconducting paring states (FMPs) represent a forefront of condensed matter physics. Here we report experimental evidence of FMP in a locally noncentrosymmetric bulk superconductor 4H_b-TaS₂. Using hard X-ray diffraction and angle-resolved photoemission spectroscopy, we reveal unusual 2D ferro-rotational charge density wave (CDW) and weak interlayer hopping in 4H_b-TaS₂. The superconducting upper critical field, H_c2, linearly increases via decreasing temperature, and well exceeds the Pauli limit, suggesting the dominant orbital pair-breaking mechanism. Remarkably, we observed evidence of field-induced superconductivity-to-superconductivity transition that breaks continuous rotational symmetry of the s-wave uniform pairing in the Bardeen-Cooper-Schrieffer theory down to the six-fold rotation symmetry. Ginzburg-Landau free energy analysis shows that magnetoelectric coupling, induced by 2D ferro-rotational CDW, stabilizes FMP that provides an explanation of the lowering rotation symmetry. Our results provide a new understanding of unconventional superconducting behaviors of the bulk quantum heterostructure 4H_b-TaS₂.

Original language	English
Article number	6626
Journal	Nature Communications
Volume	16
Issue number	1
DOIs	https://doi.org/10.1038/s41467-025-61882-z
State	Published - Dec 2025

Funding

We thank Andrew Christianson, Gang Chen, Hong Ding, Chenyun Hua, Lingyuan Kong, Patrick A. Lee, Wenyao Liu, Qiangsheng Lu, Andrew May, Michael McGuire, Thomas Maier, John Tranquada, Ziqiang Wang, Binghai Yan, Jiaqiang Yan, Noah F. Q. Yuan, Ruixing Zhang, and Yang Zhang for stimulating discussions. This research was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division (X-ray, ARPES, and transport measurements). X-ray scattering used resources (beamline 4ID and 30ID) of the Advanced Photon Source, a U.S. DOE Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. ARPES and X-ray scattering measurements used resources at 21-ID-1, 4-ID, and 10ID beamlines of the National Synchrotron Light Source II, a US Department of Energy Office of Science User Facility operated for the DOE Office of Science by Brookhaven National Laboratory under contract no. DE-SC0012704. H.C.L. (material growth) was supported by National Key R&D Program of China (Grants No. 2023YFA1406500 and No. 2022YFA1403800), National Natural Science Foundation of China (Grants No. 12274459).

Access to Document

10.1038/s41467-025-61882-z

Cite this

Yang, F. Z., Zhang, H. D., Mandal, S., Meng, F. Y., Fabbris, G., Said, A. H., Mercado Lozano, P., Rajapitamahuni, A., Vescovo, E., Nelson, C., Lin, S., Park, Y., Clements, E. M., Ward, T. Z., Lee, H. N., Lei, H. C., Liu, C. X., & Miao, H. (2025). Signature of magnetoelectric coupling driven finite momentum pairing in 3D ising superconductor. Nature Communications, 16(1), Article 6626. https://doi.org/10.1038/s41467-025-61882-z

@article{7c7c4a736aa646deb7b498536ca81066,

title = "Signature of magnetoelectric coupling driven finite momentum pairing in 3D ising superconductor",

abstract = "The finite momentum superconducting paring states (FMPs) represent a forefront of condensed matter physics. Here we report experimental evidence of FMP in a locally noncentrosymmetric bulk superconductor 4Hb-TaS2. Using hard X-ray diffraction and angle-resolved photoemission spectroscopy, we reveal unusual 2D ferro-rotational charge density wave (CDW) and weak interlayer hopping in 4Hb-TaS2. The superconducting upper critical field, Hc2, linearly increases via decreasing temperature, and well exceeds the Pauli limit, suggesting the dominant orbital pair-breaking mechanism. Remarkably, we observed evidence of field-induced superconductivity-to-superconductivity transition that breaks continuous rotational symmetry of the s-wave uniform pairing in the Bardeen-Cooper-Schrieffer theory down to the six-fold rotation symmetry. Ginzburg-Landau free energy analysis shows that magnetoelectric coupling, induced by 2D ferro-rotational CDW, stabilizes FMP that provides an explanation of the lowering rotation symmetry. Our results provide a new understanding of unconventional superconducting behaviors of the bulk quantum heterostructure 4Hb-TaS2.",

author = "Yang, \{F. Z.\} and Zhang, \{H. D.\} and Saswata Mandal and Meng, \{F. Y.\} and G. Fabbris and Said, \{A. H.\} and \{Mercado Lozano\}, P. and A. Rajapitamahuni and E. Vescovo and C. Nelson and S. Lin and Y. Park and Clements, \{E. M.\} and Ward, \{T. Z.\} and Lee, \{H. N.\} and Lei, \{H. C.\} and Liu, \{C. X.\} and H. Miao",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2025.",

year = "2025",

month = dec,

doi = "10.1038/s41467-025-61882-z",

language = "English",

volume = "16",

journal = "Nature Communications",

issn = "2041-1723",

publisher = "Nature Research",

number = "1",

}

Yang, FZ, Zhang, HD, Mandal, S, Meng, FY, Fabbris, G, Said, AH, Mercado Lozano, P, Rajapitamahuni, A, Vescovo, E, Nelson, C, Lin, S, Park, Y, Clements, EM , Ward, TZ , Lee, HN, Lei, HC, Liu, CX & Miao, H 2025, 'Signature of magnetoelectric coupling driven finite momentum pairing in 3D ising superconductor', Nature Communications, vol. 16, no. 1, 6626. https://doi.org/10.1038/s41467-025-61882-z

TY - JOUR

T1 - Signature of magnetoelectric coupling driven finite momentum pairing in 3D ising superconductor

AU - Yang, F. Z.

AU - Zhang, H. D.

AU - Mandal, Saswata

AU - Meng, F. Y.

AU - Fabbris, G.

AU - Said, A. H.

AU - Mercado Lozano, P.

AU - Rajapitamahuni, A.

AU - Vescovo, E.

AU - Nelson, C.

AU - Lin, S.

AU - Park, Y.

AU - Clements, E. M.

AU - Ward, T. Z.

AU - Lee, H. N.

AU - Lei, H. C.

AU - Liu, C. X.

AU - Miao, H.

PY - 2025/12

Y1 - 2025/12

N2 - The finite momentum superconducting paring states (FMPs) represent a forefront of condensed matter physics. Here we report experimental evidence of FMP in a locally noncentrosymmetric bulk superconductor 4Hb-TaS2. Using hard X-ray diffraction and angle-resolved photoemission spectroscopy, we reveal unusual 2D ferro-rotational charge density wave (CDW) and weak interlayer hopping in 4Hb-TaS2. The superconducting upper critical field, Hc2, linearly increases via decreasing temperature, and well exceeds the Pauli limit, suggesting the dominant orbital pair-breaking mechanism. Remarkably, we observed evidence of field-induced superconductivity-to-superconductivity transition that breaks continuous rotational symmetry of the s-wave uniform pairing in the Bardeen-Cooper-Schrieffer theory down to the six-fold rotation symmetry. Ginzburg-Landau free energy analysis shows that magnetoelectric coupling, induced by 2D ferro-rotational CDW, stabilizes FMP that provides an explanation of the lowering rotation symmetry. Our results provide a new understanding of unconventional superconducting behaviors of the bulk quantum heterostructure 4Hb-TaS2.

AB - The finite momentum superconducting paring states (FMPs) represent a forefront of condensed matter physics. Here we report experimental evidence of FMP in a locally noncentrosymmetric bulk superconductor 4Hb-TaS2. Using hard X-ray diffraction and angle-resolved photoemission spectroscopy, we reveal unusual 2D ferro-rotational charge density wave (CDW) and weak interlayer hopping in 4Hb-TaS2. The superconducting upper critical field, Hc2, linearly increases via decreasing temperature, and well exceeds the Pauli limit, suggesting the dominant orbital pair-breaking mechanism. Remarkably, we observed evidence of field-induced superconductivity-to-superconductivity transition that breaks continuous rotational symmetry of the s-wave uniform pairing in the Bardeen-Cooper-Schrieffer theory down to the six-fold rotation symmetry. Ginzburg-Landau free energy analysis shows that magnetoelectric coupling, induced by 2D ferro-rotational CDW, stabilizes FMP that provides an explanation of the lowering rotation symmetry. Our results provide a new understanding of unconventional superconducting behaviors of the bulk quantum heterostructure 4Hb-TaS2.

UR - https://www.scopus.com/pages/publications/105011089214

U2 - 10.1038/s41467-025-61882-z

DO - 10.1038/s41467-025-61882-z

M3 - Article

C2 - 40681507

AN - SCOPUS:105011089214

SN - 2041-1723

VL - 16

JO - Nature Communications

JF - Nature Communications

IS - 1

M1 - 6626

ER -

Signature of magnetoelectric coupling driven finite momentum pairing in 3D ising superconductor

Abstract

Funding

Access to Document

Other files and links

Fingerprint

Cite this