From the 2 of 6 linked papers with an AI index.
6 papers
Quantum Geometry-Driven RKKY: From Flat to Dispersive Bands
Zhenggang Zhou, Chuang Li, Lun-Hui Hu
The paper investigates how the RKKY magnetic exchange behaves in isolated flat-band systems, showing that its decay length is governed by the quantum metric and band gap and can va…
Visualizing spin-polarization of an altermagnet KVSeO via spin-selective tunneling
Guofei Yang, Chuang Li, Chengwei Wang +16
The authors use spin-selective scanning tunneling microscopy with a topological‑insulator tip to directly image the momentum‑dependent d‑wave spin polarization in the metallic alte…
Field-free Josephson diode and tunable -junction in chiral kagome antiferromagnets
Jin-Xing Hou, Chuang Li, Lun-Hui Hu +1
The recent realization of superconducting proximity effect in chiral antiferromagnets (cAFMs) opens a new route to nonreciprocal superconducting transport of fundamental interest a…
Inter-orbital spin-triplet superconductivity from altermagnetic fluctuations
Chen Lu, Chuang Li, Chao Cao +3
Altermagnetic (AM) fluctuations are a new class of collinear spin fluctuations whose role in mediating superconductivity faces a fundamental tension: their -point peak favors i…
Spin-Polarized Josephson Supercurrent in Nodeless Altermagnets
Chuang Li, Jin-Xing Hou, Fu-Chun Zhang +2
Long-range propagation of equal-spin triplet Cooper pairs typically occurs in ferromagnet/-wave superconductor junctions, where net magnetization plays a crucial role. Here, we…
Vortex States and Coherence Lengths in Flat-Band Superconductors
Chuang Li, Fu-Chun Zhang, Lun-Hui Hu
Superconductivity in flat-band systems, governed by quantum metric of Bloch states rather than the BCS framework, exhibits unique phenomena due to the vanishing electron group velo…