650 citations · 2.4k across the 56 of their papers we have counts for
17 papers · 1 filter
Temperature-driven sodium-ion dynamical-to-static crossover in the zig-zag ordered phase of NaCoO
Shangfei Wu, Hengxin Tan, Dong Wu +7
We employ polarization-resolved Raman spectroscopy combined with first-principles calculations to study the sodium-ion lattice dynamics in a sodium zig-zag ordered cobaltate compou…
Kagome Metal GdNbSn: A 4d Playground for Topological Magnetism and Electron Correlations
Yusen Xiao, Qingchen Duan, Zhaoyi Li +3
Magnetic kagome metals have garnered considerable attention as an ideal platform for investigating intrinsic topological structures, frustrated magnetism, and electron correlation…
Disordered charge density waves in the kagome metal FeGe
Hengxin Tan, Binghai Yan
The discovery of a charge density wave (CDW) in the antiferromagnetic kagome metal FeGe has prompted interest in the interplay between kagome physics, CDW, and magnetism. However,…
Three-dimensional higher-order saddle points induced flat bands in Co-based kagome metals
Hengxin Tan, Yiyang Jiang, Gregory T. McCandless +2
The saddle point (van Hove singularity) exhibits a divergent density of states in 2D systems, leading to fascinating phenomena like strong correlations and unconventional supercond…
Tuning the Intrinsic Spin Hall Effect by Charge Density Wave Order in Topological Kagome Metals
Diana Golovanova, Hengxin Tan, Tobias Holder +1
Kagome metals are topological materials with a rich phase diagram featuring various charge density wave orders and even unconventional superconductivity. However, little is still k…
Abundant lattice instability in kagome metal ScVSn
Hengxin Tan, Binghai Yan
Kagome materials are emerging platforms for studying charge and spin orders. In this work, we have revealed a rich lattice instability in a kagome metal ScVSn$_6…
Atomistic Origin of Diverse Charge Density Wave States in CsVSb
Binhua Zhang, Hengxin Tan, Binghai Yan +2
Kagome metals AV3Sb5 (A=K,Rb,or Cs) exhibit intriguing charge density wave (CDW) instabilities, which interplay with superconductivity and band topology. However, despite firm obse…
Distinct magnetic gaps between antiferromagnetic and ferromagnetic orders driven by surface defects in the topological magnet MnBi2Te4
Hengxin Tan, Binghai Yan
The magnetic topological insulator, MnBiTe, shows metallic behavior at zero magnetic fields (antiferromagnetic phase, AFM) in thin film transport, which coincides with gapl…
Momentum-inversion symmetry breaking on the Fermi surface of magnetic topological insulators
Hengxin Tan, Daniel Kaplan, Binghai Yan
Magnetic topological insulators (MnBiTe)(BiTe) were anticipated to exhibit magnetic energy gaps while recent spectroscopic studies did not observe them. Thus, m…
Facet dependent surface energy gap on magnetic topological insulators
Hengxin Tan, Binghai Yan
Magnetic topological insulators (MnBiTe)(BiTe) () are promising to realize exotic topological states such as the quantum anomalous Hall effect (QAHE)…
Observation of anomalous amplitude modes in the kagome metal CsVSb
Gan Liu, Xinran Ma, Kuanyu He +12
The charge-density wave (CDW) phase is often accompanied by the condensation of a soft acoustic phonon mode, giving rise to lattice distortion and charge density modulation. This p…
Higher-order, quantum magnetic inductions in chiral topological materials
Yizhou Liu, Hengxin Tan, Binghai Yan
The classic magnetic induction effect is usually considered in electric circuits or conductor coils. In this work, we propose quantum induction effects induced by the Berry curvatu…
Unconventional anomalous Hall effect from magnetization parallel to the electric field
Hengxin Tan, Yizhou Liu, Binghai Yan
In the anomalous Hall effect (AHE), the magnetization, electric field and the Hall current are presumed to be mutually vertical to each other. In this work, we propose an unconvent…
Two-dimensional ferromagnetic-ferroelectric multiferroics in violation of the d0 rule
Hengxin Tan, Menglei Li, Haitao Liu +3
Contribution of d-electron to ferroelectricity of type-II multiferroics causes strong magneto-electric coupling and distinguishes them from the conventional type-I multiferroics. H…
Understanding the origin of bandgap problem in transition and post-transition metal oxides
Hengxin Tan, Haitao Liu, Yuanchang Li +2
Improving electronic structure calculations for practical and technologically-important materials has been a never-ending pursue. This is especially true for transition and post-tr…
Effect of Hartree-Fock Pseudopotential on the First-principles Electronic Structure
Hengxin Tan, Yuanchang Li, S. B. Zhang +1
Density functional theory (DFT) can run into serious difficulties with localized states in elements such as transition metals with occupied-d states and oxygen. In contrast, Hartre…
First-principles studies of the local structure and relaxor behavior of Pb(MgNb)O-PbTiO-derived ferroelectric perovskite solid solutions
Hengxin Tan, Hiroyuki Takenaka, Changsong Xu +3
We have investigated the effect of transition metal dopants on the local structure of the prototypical 0.75 Pb(MgNb)O-0.25 PbTiO relaxor ferroelectric. We f…