A5101543784- Topological Materials and Phenomena
- Graphene research and applications
- Advanced Condensed Matter Physics
- Magnetic properties of thin films
- 2D Materials and Applications
- Iron-based superconductors research
- High-pressure geophysics and materials
- Ammonia Synthesis and Nitrogen Reduction
- Magnetic and transport properties of perovskites and related materials
- Climate variability and models
- MXene and MAX Phase Materials
- Quantum and electron transport phenomena
- Electronic and Structural Properties of Oxides
- Rare-earth and actinide compounds
- Cryospheric studies and observations
- Atomic and Subatomic Physics Research
- Semiconductor materials and devices
- Chemical Reactions and Isotopes
- Inorganic Chemistry and Materials
- Meteorological Phenomena and Simulations
- Boron and Carbon Nanomaterials Research
University of Chinese Academy of Sciences
2017-2024
Institute of Physics
2020-2024
Chinese Academy of Sciences
2017-2024
National Laboratory for Superconductivity
2020-2021
Institute of Soil and Water Conservation
2017
Ministry of Water Resources of the People's Republic of China
2017
Northwest A&F University
2017
The excitonic insulator (EI) is an exotic ground state of narrow-gap semiconductors and semimetals arising from spontaneous condensation electron-hole pairs bound by attractive Coulomb interaction. Despite research on EIs dating back to half a century ago, their existence in real materials remains subject ongoing debate. In this study, through systematic experimental theoretical investigations, we provide evidence for the EI van der Waals compound <a:math...
The recently developed theory of topological quantum chemistry (TQC) has built a close connection between band representations in momentum space and orbital characters real space. It provides an effective way to diagnose materials, leading the discovery lots materials after screening all known nonmagnetic compounds. On other hand, it can also efficiently reveal spacial characters, including average charge centers site-symmetry characters. By using TQC with computed irreducible...
The modulation of topological electronic state by an external magnetic field is highly desired for condensed-matter physics. Schemes to achieve this have been proposed theoretically, but few can be realized experimentally. Here, combining transverse transport, theoretical calculations, and scanning tunneling microscopy/spectroscopy (STM/S) investigations, we provide observation that the state, accompanied emergent magneto-transport phenomenon, was modulated applying through induced...
Extreme climatic oscillation has been the subject of global attention. The purpose this study is to explore response extreme precipitation solar activity and El Nino events in typical regions Loess Plateau—a case Yan’an area. data was from nine weather stations sunspot number Southern Oscillation Index (SOI) were 1951 2015. results show that maximum occurred mainly at peak or 2a near it minimum valley values not significantly correlated. Morlet wavelet showed a 41-year period most obvious...
Abstract We report a comprehensive neutron scattering study on the spin excitations in magnetic Weyl semimetal Co 3 Sn 2 S with quasi-two-dimensional structure. Both in-plane and out-of-plane dispersions of waves were revealed ferromagnetic state. Similarly, dispersive but damped found paramagnetic The effective exchange interactions estimated using semi-classical Heisenberg model to consistently reproduce experimental T C stiffness. However, full wave gap below E g = 2.3 meV was observed at...
Using angle-resolved photoemission spectroscopy and band structure calculation, we have investigated the three-dimensional nature orbital character of low-energy electronic in layered ternary boride ${\mathrm{AlMn}}_{2}{\mathrm{B}}_{2}$, which ferromagnetic Mn $ab$ layers couple antiferromagnetically along $c$ axis (N\'eel temperature ${\mathrm{T}}_{\mathrm{N}}\ensuremath{\sim}320\phantom{\rule{0.28em}{0ex}}\mathrm{K}$). The calculation indicates that bands vicinity Fermi energy...
The quadratic band crossing points (QBCPs) at Fermi level in two-dimension have been proposed to be unstable under electron-electron interaction. possible interaction driven states include quantum anomalous Hall (QAH) state and various nematic ordered states. In this work, motivated by the discovery of ferromagnetic van der Waals layered metal-organic framework CrCl$_2$(pyrazine)$_2$, we theoretically propose that single layer CrCl$_2$(pyrazine)$_2$ might realize one or some these based on...
The modulation of topological electronic states by an external magnetic field is highly desired for condensed matter physics. Schemes to achieve this have been proposed theoretically, but few can be realized experimentally. Here, combining transverse transport, theoretical calculations, and scanning tunneling microscopy/spectroscopy (STM/S) investigations, we provide observation that the states, accompanied emergent magneto-transport phenomenon, were modulated applying fields through induced...
A search for the single material system that simultaneously exhibits topological phase and intrinsic superconductivity has been largely limited, although such a is far more favorable especially quantum device applications. Except artificially engineered in heterostructure systems, another alternative to have arising from materials by pressure or other clean technology. Here, based on first-principles calculations, we first show quasi-one-dimensional compound (NbSe4)2I represents rare example...