12 papers
Unconventional and Fragile Magnetic Exciton in a van der Waals Quantum Magnet
Kai-Xuan Zhang, Min Zhang, Minjae Kim +25
The study investigates a magnetic exciton in the van der Waals antiferromagnet NiPS3, showing that its sharp, optically bright emission is quickly quenched by modest hydrostatic pr…
Interfacial chirality-induced magnetic-field-free switching with high energy efficiency in all-vdW heterostructures
Kai-Xuan Zhang, Suik Cheon, Seungbok Lee +12
Chirality, a central concept across many scientific disciplines, continues to inspire the discovery of novel physical phenomena. In condensed matter physics, structural chirality -…
Emergent giant topological Hall effect in twisted Fe3GeTe2 metallic system
Hyuncheol Kim, Kai-Xuan Zhang, Yu-Hang Li +3
The topological Hall effect, driven by the exchange interaction between conduction electrons and topological magnetic textures such as skyrmions, is a powerful probe for investigat…
Current Switching of Topological Spin Chirality in the van der Waals Antiferromagnet Co1/3TaS2
Kai-Xuan Zhang, Seungbok Lee, Woonghee Cho +1
Magnetic topology is central to modern quantum magnet, where spin chirality governs exotic spin winding, real-space Berry phase, and topological Hall effect. A key unresolved chall…
Electrical control of topological 3Q state in intercalated van der Waals antiferromagnet Cox-TaS2
Junghyun Kim, Kai-Xuan Zhang, Pyeongjae Park +4
Van der Waals (vdW) magnets have opened a new avenue of opportunities encompassing various interesting phases. Co1/3TaS2-an intercalated metallic vdW antiferromagnet-is one of the…
2D van der Waals magnets: from fundamental physics to applications
Je-Geun Park, Kaixuan Zhang, Hyeonsik Cheong +5
Magnetism has played a central role in the long and rich history of modern condensed matter physics, with many foundational insights originating from theoretical studies of two-dim…