740 citations · 3.9k across the 28 of their papers we have counts for
29 papers
Charge density wave in a band insulator
Md Shafayat Hossain, Wenhao Liu, Yuqi Zhang +20
Charge density wave (CDW) implies a periodic modulation of the charge density. Typically observed in metallic systems, CDWs arise from Fermi surface instabilities, resulting in the…
Superconducting Gap Engineering in Tantalum-Alloy-Based Resonators
Chen Yang, Faranak Bahrami, Guangming Cheng +7
Utilizing tantalum (Ta) in superconducting circuits has led to significant improvements, such as high qubit lifetimes and quality factors in both qubits and resonators, underscorin…
Vortex Motion Induced Losses in Tantalum Resonators
Faranak Bahrami, Matthew P. Bland, Nana Shumiya +17
Tantalum (Ta) based superconducting circuits have been demonstrated to enable record qubit coherence times and quality factors, motivating a careful study of the microscopic origin…
Eliminating Surface Oxides of Superconducting Circuits with Noble Metal Encapsulation
Ray D. Chang, Nana Shumiya, Russell A. McLellan +15
The lifetime of superconducting qubits is limited by dielectric loss, and a major source of dielectric loss is the native oxide present at the surface of the superconducting metal.…
Discovery of a Topological Charge Density Wave
Maksim Litskevich, Md Shafayat Hossain, Songbo Zhang +21
Charge density waves (CDWs) appear in numerous condensed matter platforms, ranging from high-Tc superconductors to quantum Hall systems. Despite such ubiquity, there has been a lac…
Transport response of topological hinge modes in -BiBr
Md Shafayat Hossain, Qi Zhang, Zhiwei Wang +19
Electronic topological phases are renowned for their unique properties, where conducting surface states exist on the boundary of an insulating three-dimensional bulk. While the tra…
Anomalously high supercurrent density in a two-dimensional topological material
Qi Zhang, Md Shafayat Hossain, Brian Casas +24
Ongoing advances in superconductors continue to revolutionize technology thanks to the increasingly versatile and robust availability of lossless supercurrent. In particular high s…
Disentangling Losses in Tantalum Superconducting Circuits
Kevin D. Crowley, Russell A. McLellan, Aveek Dutta +17
Superconducting qubits are a leading system for realizing large scale quantum processors, but overall gate fidelities suffer from coherence times limited by microwave dielectric lo…
Evidence for electronic signature of magnetic transition in topological magnet HoSbTe
Nana Shumiya, Jia-Xin Yin, Guoqing Chang +11
Topological insulators with intrinsic magnetic order are emerging as an exciting platform to realize fundamentally new excitations from topological quantum states of matter. To stu…
Magnetization-direction-tunable kagome Weyl line
Zi-Jia Cheng, Ilya Belopolski, Tyler A. Cochran +21
Kagome magnets provide a fascinating platform for a plethora of topological quantum phenomena. Here, utilizing angle-resolved photoemission spectroscopy, we demonstrate Weyl lines…
Discovery of charge order and corresponding edge state in kagome magnet FeGe
Jia-Xin Yin, Yu-Xiao Jiang, Xiaokun Teng +21
Kagome materials often host exotic quantum phases, including spin liquids, Chern gap, charge order, and superconductivity. Existing scanning microscopy studies of the kagome charge…
Visualizing the out-of-plane electronic dispersions in an intercalated transition metal dichalcogenide
Xian P. Yang, Harrison LaBollita, Zi-Jia Cheng +17
Layered transition metal dichalcogenides have rich phase diagram and they feature two dimensionality on numerous physical properties. Co1/3NbS2 is one of the newest members of this…
Tunable nodal kagome superconductivity in charge ordered RbV3Sb5
Z. Guguchia, C. Mielke, D. Das +18
Unconventional superconductors often feature competing orders, small superfluid density, and nodal electronic pairing. While unusual superconductivity has been proposed in the kago…
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…
Room-temperature quantum spin Hall edge state in a higher-order topological insulator BiBr
Nana Shumiya, Md Shafayat Hossain, Jia-Xin Yin +24
Room-temperature realization of macroscopic quantum phenomena is one of the major pursuits in fundamental physics. The quantum spin Hall state, a topological quantum phenomenon tha…
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…
Electronic nature of chiral charge order in the kagome superconductor CsV3Sb5
Zhiwei Wang, Yu-Xiao Jiang, Jia-Xin Yin +21
Kagome superconductors with Tc up to 7K have been discovered over 40 years. Recently, unconventional chiral charge order has been reported in kagome superconductor KV3Sb5, with an…
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…
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,…