Spin-Valley Locking Survives Magnetic Intercalation in TaS₂

Scientific Achievement

• Researchers in the Quantum Materials program Revealed spin–valley locking in transition metal dichalcogenides (TMD), 2H-TaS₂ and magnetically intercalated Co₁/₃TaS₂ using spin-resolved ARPES, showing that the TaS2 spin texture survives strong interlayer coupling introduced by magnetic intercalation

Significance and Impact

• Demonstrated how spin and valley degrees of freedom remain robust in layered quantum materials even in the presence of magnetism and enhanced interlayer interactions, providing a pathway to engineer spin polarized electronic states in quantum materials

Research Details

• Spatially resolved spin-resolved ARPES experiments on magnetically intercalated TMD
• Domain-dependent spin reversal

Publication Details

H. Luo, J. Rodriguez, M. Huber, H. Jiang, L. Moreschini, P. T. Madathil, C. Xu, C. Jozwiak, A. Bostwick, A. Fedorov,J. G. Analytis, D.H. Lee, A. Lanzara, NanoLetters (2026).

DOI:10.1021/acs.nanolett.5c05292

Work was performed at Lawrence Berkeley National Lab and in part at the Advanced Light Source.