2025Advanced Functional Materials

Ising Superconductivity and Signatures of Orbital FFLO State in Non-Centrosymmetric 3R-TaSe₂ Thin Flakes

Zhenkai Xie, Zhaoxu Chen, Meng Yang, Lei Liao, Jun Deng, Boqin Song, Xu Chen, Zhaolong Liu, Jiahao Yan, Xinyu Huang, Liang‐guang Jia, Yuan Huang, Xiaolong Chen, Liyuan Zhang, Zhigang Cheng, Jian‐gang Guo

Advanced Functional Materials · 35, 2501453 (2025)

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DOI 10.1002/adfm.202501453

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Introduction

Thickness-dependent parallel-field measurements on 3R-TaSe₂ distinguish a two-unit-cell Ising-like superconducting regime from signatures of finite-momentum pairing in thicker flakes.

A closer reading

Compare the two-, four- and eight-unit-cell devices: changing thickness changes the room available for interlayer orbital motion. Critical-field anomalies constrain a pairing model; they do not directly image a modulated order parameter.