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What's knot to like? Observation of a linked loop quantum state
Ilya Belopolski, Guoqing Chang, Tyler A. Cochran +22
Quantum phases can be classified by topological invariants, which take on discrete values capturing global information about the quantum state. Over the past decades, these invaria…
Helicoid-arc van Hove singularities in topological chiral crystals
Daniel S. Sanchez, Tyler A. Cochran, Ilya Belopolski +14
Van Hove singularity are electronic instabilities that lead to many fascinating interactions, such as superconductivity and charge-density waves. And despite much interest, the nex…
Signatures of Weyl fermion annihilation in a correlated kagome magnet
Ilya Belopolski, Tyler A. Cochran, Xiaoxiong Liu +22
The manipulation of topological states in quantum matter is an essential pursuit of fundamental physics and next-generation quantum technology. Here we report the magnetic manipula…
Weyl, Dirac and high-fold chiral fermions in topological quantum materials
M. Zahid Hasan, Guoqing Chang, Ilya Belopolski +3
Quantum materials hosting Weyl fermions have opened a new era of research in condensed matter physics. First proposed in 1929 in particle physics, Weyl fermions have yet to be obse…
Putative helimagnetic phase in the kagome metal Co_3Sn_2-xIn_xS_2
Z. Guguchia, H. Zhou, C. N. Wang +12
The exploration of topological electronic phases that result from strong electronic correlations is a frontier in condensed matter physics. One class of systems that is currently e…