740 citations · 4.6k across the 31 of their papers we have counts for
31 papers
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…
Robust topological state against magnetic impurities observed in superconductor PbTaSe2
Daniel Multer, Jia-Xin Yin, Songtian S. Zhang +5
Magnetic impurities deposited on topological superconductor candidate PbTaSe2 can introduce a non-splitting zero-energy state inside the superconducting gap, which has been propose…
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…
Intrinsic nature of chiral charge order in the kagome superconductor RbV3Sb5
Nana Shumiya, Md Shafayat Hossain, Jia-Xin Yin +17
Superconductors with kagome lattices have been identified for over 40 years, with a superconducting transition temperature TC up to 7K. Recently, certain kagome superconductors hav…
Discovery of unconventional chiral charge order in kagome superconductor KV3Sb5
Yu-Xiao Jiang, Jia-Xin Yin, M. Michael Denner +23
Intertwining quantum order and nontrivial topology is at the frontier of condensed matter physics. A charge density wave (CDW) like order with orbital currents has been proposed as…
Spin-orbit quantum impurity and quantization in a topological magnet
Jia-Xin Yin, Nana Shumiya, Yuxiao Jiang +22
Quantum states induced by single-atomic impurities are at the frontier of physics and material science. While such states have been reported in high-temperature superconductors and…
Fermion-boson many-body interplay in a frustrated kagome paramagnet
J. -X. Yin, Nana Shumiya, Sougata Mardanya +22
Kagome-net, appearing in areas of fundamental physics, materials, photonic and cold-atom systems, hosts frustrated fermionic and bosonic excitations. However, it is extremely rare…
Many-body Resonance in a Correlated Topological Kagome Antiferromagnet
Songtian S. Zhang, Jia-Xin Yin, Muhammad Ikhlas +16
We use scanning tunneling microscopy/spectroscopy (STM/S) to elucidate the atomically resolved electronic structure in strongly correlated topological kagome magnet MnSn. In st…
Observation of Weyl fermions in a magnetic non-centrosymmetric crystal
Daniel S. Sanchez, Guoqing Chang, Ilya Belopolski +15
Characterized by the absence of inversion symmetry, non-centrosymmetric materials are of great interest because they exhibit ferroelectricity, second harmonic generation, emergent…
Discovery of a quantum limit Chern magnet TbMn6Sn6
Jia-Xin Yin, Wenlong Ma, Tyler A. Cochran +23
The quantum level interplay between geometry, topology, and correlation is at the forefront of fundamental physics. Owing to the unusual lattice geometry and breaking of time-rever…
Observation of sixfold degenerate fermions in PdSb
Xiàn Yáng, Tyler A. Cochran, Ramakanta Chapai +16
Three types of fermions have been extensively studied in topological quantum materials: Dirac, Weyl, and Majorana fermions. Beyond the fundamental fermions in high energy physics,…
Signatures of a topological Weyl loop in CoSnS
Ilya Belopolski, Tyler A. Cochran, Stepan S. Tsirkin +13
The search for novel topological phases of matter in quantum magnets has emerged as a frontier of condensed matter physics. Here we use state-of-the-art angle-resolved photoemissio…
Discovery of topological Weyl fermion lines and drumhead surface states in a room temperature magnet
Ilya Belopolski, Kaustuv Manna, Daniel S. Sanchez +20
Topological matter is known to exhibit unconventional surface states and anomalous transport owing to unusual bulk electronic topology. In this study, we use photoemission spectros…
Enhanced Anomalous Hall Effect in Magnetic Topological Semimetal CoSnInS
Huibin Zhou, Guoqing Chang, Guangqiang Wang +10
We study the anomalous Hall Effect (AHE) of single-crystalline CoSnInS over a large range of indium concentration x from 0 to 1. Their magnetization reduces pro…
Spin-orbit quantum impurity in a topological kagome magnet
Jia-Xin Yin, Nana Shumiya, Yuxiao Jiang +22
Quantum states induced by single-atomic-impurities are the current frontier of material and information science. Recently the spin-orbit coupled correlated kagome magnets are emerg…
Field-free platform for topological zero-energy mode in superconductors LiFeAs and PbTaSe
Songtian S. Zhang, Jia-Xin Yin, Guangyang Dai +22
Superconducting materials exhibiting topological properties are emerging as an exciting platform to realize fundamentally new excitations from topological quantum states of matter.…
Quantum phase transition of correlated iron-based superconductivity in LiFeCoAs
Jia-Xin Yin, Songtian S. Zhang, Guangyang Dai +25
The interplay between unconventional Cooper pairing and quantum states associated with atomic scale defects is a frontier of research with many open questions. So far, only a few o…
Topological photocurrent responses from chiral surface Fermi arcs
Guoqing Chang, Jiaxin Yin, Titus Neupert +10
The nonlinear optical responses from topological semimetals are crucial in both understanding the fundamental properties of quantum materials and designing next-generation light-se…
Negative flat band magnetism in a spin-orbit coupled correlated kagome magnet
Jia-Xin Yin, Songtian S. Zhang, Guoqing Chang +17
It has long been speculated that electronic flat band systems can be a fertile ground for hosting novel emergent phenomena including unconventional magnetism and superconductivity.…
Discovery of topological chiral crystals with helicoid arc states
Daniel S. Sanchez, Ilya Belopolski, Tyler A. Cochran +19
The quantum behaviour of electrons in materials lays the foundation for modern electronic and information technology. Quantum materials with novel electronic and optical properties…
Giant and anisotropic many-body spin-orbit tunability in a strongly correlated kagome magnet
Jia-Xin Yin, Songtian S. Zhang, Hang Li +18
Owing to the unusual geometry of kagome lattices-lattices made of corner-sharing triangles-their electrons are useful for studying the physics of frustrated, correlated and topolog…
Vector field controlled vortex lattice symmetry in LiFeAs
Songtian S. Zhang, Jia-Xin Yin, Guangyang Dai +8
We utilize a combination of vector magnetic field and scanning tunneling microscopy to elucidate the 3D field-based electronic phase diagram of a correlated iron-based superconduct…
A three-dimensional magnetic topological phase
Ilya Belopolski, Daniel S. Sanchez, Guoqing Chang +16
We use photoemission spectroscopy to discover the first topological magnet in three dimensions, the material CoMnGa.
Topological Hopf and chain link semimetal states and their application to Co2MnGa (Theory and Materials Prediction)
Guoqing Chang, Su-Yang Xu, Xiaoting Zhou +9
Topological semimetals can be classified by the connectivity and dimensionality of the band cross- ing in momentum space. The band crossings of a Dirac, Weyl, or an unconventional…