Junze Deng
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View article: Theory of Superconductivity in LaRu$_3$Si$_2$ and Predictions of New Kagome Flat Band Superconductors
Theory of Superconductivity in LaRu$_3$Si$_2$ and Predictions of New Kagome Flat Band Superconductors Open
We present a comprehensive investigation of the flat-band kagome superconductor LaRu$_3$Si$_2$, which has recently been reported to host charge density wave (CDW) order above room temperature ($T_{CDW} \simeq 400$ K). The stable crystal st…
View article: Evidence for saddle point-driven charge density wave on the surface of heavily hole-doped iron arsenide superconductors
Evidence for saddle point-driven charge density wave on the surface of heavily hole-doped iron arsenide superconductors Open
Unconventional superconductivity is known for its intertwining with other correlated states, making exploration of the intertwined orders important for understanding its pairing mechanism. In particular, spin and nematic orders are widely …
View article: Observation of Robust One-Dimensional Edge Channels in a Three-Dimensional Quantum Spin Hall Insulator
Observation of Robust One-Dimensional Edge Channels in a Three-Dimensional Quantum Spin Hall Insulator Open
Topologically protected edge channels show prospects for quantum devices. They have been found experimentally in two-dimensional quantum spin Hall insulators (QSHIs), weak topological insulators, and higher-order topological insulators, bu…
View article: Discovery of a Magnetic Topological Semimetal Eu$_3$In$_2$As$_4$ with a Single Pair of Weyl Points
Discovery of a Magnetic Topological Semimetal Eu$_3$In$_2$As$_4$ with a Single Pair of Weyl Points Open
Magnetic Weyl semimetal (MWS) is a unique topological state with open surface Fermi arc states and other exotic transport phenomena. However, most reported MWSs show multiple pairs of Weyl points and complicated Fermi surfaces, which incre…
View article: Large shift current, <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>π</mml:mi></mml:math> Zak phase, and the unconventional nature of Se and Te
Large shift current, Zak phase, and the unconventional nature of Se and Te Open
Recently, unconventional materials (or obstructed atomic insulators) have attracted much attention owing to the unconventional feature of mismatch between Wannier centers and atomic positions. In this paper, we demonstrate that the trigona…
View article: Unconventional phonon spectra and obstructed edge phonon modes
Unconventional phonon spectra and obstructed edge phonon modes Open
Based on the elementary band representations (EBR), some topologically trivial materials are classified as unconventional ones (obstructed atomic limit), where the EBR decomposition of electronic states is not consistent with the atomic va…
View article: Robust three-dimensional type-II Dirac semimetal state in SrAgBi
Robust three-dimensional type-II Dirac semimetal state in SrAgBi Open
View article: Flat Band and ℤ<sub>2</sub> Topology of Kagome Metal CsTi<sub>3</sub>Bi<sub>5</sub>
Flat Band and ℤ<sub>2</sub> Topology of Kagome Metal CsTi<sub>3</sub>Bi<sub>5</sub> Open
The simple kagome-lattice band structure possesses Dirac cones, flat band, and saddle point with van Hove singularities in the electronic density of states, facilitating the emergence of various electronic orders. Here we report a titanium…
View article: Two elementary band representation model, Fermi surface nesting, and surface topological superconductivity in $A$V$_{3}$Sb$_ {5}$ ($A = \text{K, Rb, Cs}$)
Two elementary band representation model, Fermi surface nesting, and surface topological superconductivity in $A$V$_{3}$Sb$_ {5}$ ($A = \text{K, Rb, Cs}$) Open
The recently discovered vanadium-based Kagome metals $A$V$_{3}$Sb$_{5}$ ($A = \text{K, Rb, Cs}$) are of great interest with the interplay of charge density wave (CDW) order, band topology and superconductivity. In this paper, by identifyin…
View article: Large Spin Hall Conductivity and Excellent Hydrogen Evolution Reaction Activity in Unconventional PtTe <sub>1.75</sub> Monolayer
Large Spin Hall Conductivity and Excellent Hydrogen Evolution Reaction Activity in Unconventional PtTe <sub>1.75</sub> Monolayer Open
Two-dimensional (2D) materials have gained lots of attention due to the potential applications. In this work, we propose that based on first-principles calculations, the (2 × 2) patterned PtTe 2 monolayer with kagome lattice formed by the …
View article: Large shift current, $π$ Zak phase and unconventional nature in Se and Te
Large shift current, $π$ Zak phase and unconventional nature in Se and Te Open
Recently, unconventional materials (or obstructed atomic insulators) have attracted much attention owing to the unconventional feature of mismatch between Wannier centers and atomic positions. In this paper, we demonstrate that the trigona…
View article: Quadrupole topological insulators in Ta2M3Te5 (M = Ni, Pd) monolayers
Quadrupole topological insulators in Ta2M3Te5 (M = Ni, Pd) monolayers Open
Higher-order topological insulators have been introduced in the precursory Benalcazar-Bernevig-Hughes quadrupole model, but no electronic compound has been proposed to be a quadrupole topological insulator (QTI) yet. In this work, we predi…
View article: Large spin Hall conductivity and excellent hydrogen evolution reaction activity in unconventional PtTe1.75 monolayer
Large spin Hall conductivity and excellent hydrogen evolution reaction activity in unconventional PtTe1.75 monolayer Open
Two-dimensional (2D) materials have gained lots of attention due to the potential applications. In this work, we propose that based on first-principles calculations, the (2$\times$2) patterned PtTe$_2$ monolayer with kagome lattice formed …
View article: Twisted nodal wires and three-dimensional quantum spin Hall effect in distorted square-net compounds
Twisted nodal wires and three-dimensional quantum spin Hall effect in distorted square-net compounds Open
Recently, square-net materials have attracted lots of attention for the Dirac semimetal phase with negligible spin-orbit coupling (SOC) gap, e.g. ZrSiS/LaSbTe and CaMnSb$_2$. In this paper, we demonstrate that the Jahn-Teller effect enlarg…