227 citations · 1.9k across the 45 of their papers we have counts for
45 papers
Néel-order-dependent transverse transport in noncoplanar antiferromagnet
Qi Feng, Yilin Han, Yongkai Li +9
Antiferromagnets hold appealing potential in next-generation spintronic devices with higher frequency and scalability, thanks to their alternating spin orientations that cancel out…
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…
Type-I and Type-II Saddle Points and a Topological Flat Band in a Bi-Pyrochlore Superconductor CsBi2
Yusei Morita, Yongkai Li, Yu-Hao Wei +12
The divergence of the electron density of states (DOS) plays an important role in enhancing many-body interactions and inducing various quantum phases in low-dimensional systems. H…
Many-body electronic structure in pyrochlore superconductor CsBi2 and spin liquid Pr2Ir2O7
Wei Song, Guowei Liu, Hanbin Deng +26
The pyrochlore lattice materials can exhibit geometrical frustration, while the related many-body electronic states remain elusive. In this work, we performed scanning tunneling mi…
Topological surface states in γ-PtBi evidenced by scanning tunneling microscopy
Yunkai Guo, Jingming Yan, Wen-Han Dong +11
For the application of topological materials, the specific location of their topological surface states with respect to the Fermi level are important. γ-PtBi2 has been demonstrated…
Broken symmetries associated with a Kagome chiral charge order
Zi-Jia Cheng, Md Shafayat Hossain, Qi Zhang +17
Chirality or handedness manifests in all fields of science, ranging from cell biology, molecular interaction, and catalysis to different branches of physics. In condensed matter ph…
Field induced density wave in a kagome superconductor
Md Shafayat Hossain, Qi Zhang, Julian Ingham +19
On the kagome lattice, electrons benefit from the simultaneous presence of band topology, flat electronic bands, and van Hove singularities, forming competing or cooperating orders…
Unconventional gapping behavior in a kagome superconductor
Md Shafayat Hossain, Qi Zhang, Eun Sang Choi +19
Determining the types of superconducting order in quantum materials is a challenge, especially when multiple degrees of freedom, such as bands or orbitals, contribute to the fermio…
Evidence of anisotropic three-dimensional weak-localization in TiSe nanoflakes
Xiaocui Wang, Yang Yang, Yongkai Li +5
TiSe is a typical transition-metal dichalcogenide known for its charge-density wave order. In this study, we report the observation of an unusual anisotropic negative magnetore…
Interlayer Charge-density-wave Vector Phase Induced Structural Chirality
Sen Shao, Wei-Chi Chiu, Tao Hou +21
Chiral charge density waves (CDWs) have attracted intense interest due to their exotic quantum properties, yet the microscopic origin of structural chirality emerging from correlat…
Search for orbital magnetism in the kagome superconductor using neutron diffraction
William Liège, Yaofeng Xie, Dalila Bounoua +7
As many Kagome metals, the topological superconductor AVSb with (A = K,Rb,Cs) hosts a charge density wave . A related chiral flux phase that breaks the time-reversal symmet…
Evolution of Band Structure in a Kagome Superconductor Cs(V1-xCrx)3Sb5: Toward Universal Understanding of CDW and Superconducting Phase Diagrams
Shuto Suzuki, Takemi Kato, Yongkai Li +10
Kagome superconductors AV3Sb5 (A = K, Rb, Cs) exhibit a characteristic superconducting and charge-density wave (CDW) phase diagram upon carrier doping and chemical substitution. Ho…
Flat bands and distinct density wave orders in correlated Kagome superconductor CsCrSb
Shuting Peng, Yulei Han, Yongkai Li +15
Kagome metal CsVSb has attracted much recent attention due to the coexistence of multiple exotic orders and the associated proposals to mimic unconventional high temperatur…
Three-dimensional hidden phase probed by in-plane magnetotransport in kagome metal CsVSb thin flakes
Xinjian Wei, Congkuan Tian, Hang Cui +12
Transition metal compounds with kagome structure have been found to exhibit a variety of exotic structural, electronic, and magnetic orders. These orders are competing with energie…
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…
Pressure-induced Superconductivity and Structure Phase Transition in SnAs-based Zintl Compound SrSn2As2
Weizheng Cao, Juefei Wu, Yongkai Li +11
Layered SnAs-based Zintl compounds exhibit a distinctive electronic structure, igniting extensive research efforts in areas of superconductivity, topological insulators and quantum…
Evolution of charge density waves from three-dimensional to quasi-two-dimensional in Kagome superconductors Cs(V)Sb ( = Nb, Ta)
Qian Xiao, Qizhi Li, Jinjin Liu +7
The Kagome material ( = K, Rb, Cs) with geometry frustration hosts non-trivial topological electronic structures, electronic nematicity, charge…
Violation of Emergent Rotational Symmetry in the Hexagonal Kagome Superconductor CsV3Sb5
Kazumi Fukushima, Keito Obata, Soichiro Yamane +6
Superconductivity is caused by electron pairs that are canonically isotropic, whereas some exotic superconductors are known to exhibit non-trivial anisotropy stemming from unconven…
Effects of Nb Doping on the Charge-Density Wave and Electronic Correlations in the Kagome Metal Cs(VNb)Sb
Xiaoxiang Zhou, Yongkai Li, Zhe Liu +5
The transport and optical properties of the Nb-doped Cs(VNb)Sb with x = 0.03 and 0.07 have been investigated and compared with those of the undoped CsV$_{…
Nodeless electron pairing in CsVSb-derived kagome superconductors
Yigui Zhong, Jinjin Liu, Xianxin Wu +19
The newly discovered kagome superconductors represent a promising platform for investigating the interplay between band topology, electronic order, and lattice geometry. Despite ex…
Optical bulk-boundary dichotomy in a quantum spin Hall insulator
Junfeng Han, Pengcheng Mao, Hailong Chen +17
The bulk-boundary correspondence is a key concept in topological quantum materials. For instance, a quantum spin Hall insulator features a bulk insulating gap with gapless helical…
Surface-termination-dependent electronic states in kagome superconductors AV3Sb5 (A = K, Rb, Cs) studied by micro-ARPES
Takemi Kato, Yongkai Li, Min Liu +9
Recently discovered kagome superconductors AV3Sb5 (A = K, Rb, Cs) exhibit exotic bulk and surface physical properties such as charge-density wave (CDW) and chirality, whereas their…
Tunable van Hove singularity without structural instability in Kagome metal CsTiBi
Bo Liu, Minquan Kuang, Yang Luo +12
In Kagome metal CsVSb, multiple intertwined orders are accompanied by both electronic and structural instabilities. These exotic orders have attracted much recent attention…