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Bibliographic Details
Main Authors: Liu, Xiangqi, Xu, Chen, Jiang, Jing, Wang, Haonan, Liu, Shaobo, Liu, Gan, Zhu, Ziyi, Yuan, Jian, Xia, Wei, Wen, Lianbing, Luo, Jiawei, Luo, Yixuan, Wang, Xia, Yu, Na, Cheng, Peihong, Chen, Leiming, Zhou, Rui, Li, Jun, Chen, Yulin, Wu, Shiwei, Qu, Ke, Li, Wei, Zhang, Guangming, Duan, Chungang, Chen, Jianhao, Xi, Xiaoxiang, Yang, Zhenzhong, Liu, Kai, Guo, Yanfeng
Format: Preprint
Published: 2025
Subjects:
Superconductivity
Online Access:https://arxiv.org/abs/2508.01241
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Table of Contents:
  • Superconductivity in the two-dimensional (2D) limit is a fertile ground for exotic quantum phenomena-many of which remain elusive in their 3D counterparts. While studies of 2D superconductivity have predominantly focused on mono- or few-layer systems, we demonstrate an alternative route-interlayer sliding in bulk crystals. Through a precisely controlled growth strategy, we engineer interlayer sliding in bulk 3R-NbSe2, deliberately disrupting [001] mirror symmetry and drastically suppressing interlayer coupling. Remarkably, this structural manipulation stabilizes Ising-type superconductivity coexisting with an unconventional charge-density-wave (CDW) state akin to that of monolayer 2H-NbSe2. The sliding phase exhibits a pronounced suppression of the upper critical field at low temperatures, revealing a delicate competition between Ising and Rashba spin-orbit coupling (SOC) in the globally noncentrosymmetric lattice. Intriguingly, the superconducting state displays two-fold symmetry, a signature that may arise from asymmetric SOC or a multi-component pairing order parameter. Our work establishes interlayer sliding as a symmetry-breaking tool to promote 2D superconductivity in bulk materials-without resorting to extrinsic intercalation or doping. More broadly, this approach sets a paradigm for unlocking hidden quantum states in layered materials, offering a new dimension in design of quantum matter.

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