Xu-Tao Zeng
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View article: Robustness of ferromagnetism in van der Waals magnet Fe<sub>3</sub>GeTe<sub>2</sub> to hydrostatic pressure
Robustness of ferromagnetism in van der Waals magnet Fe<sub>3</sub>GeTe<sub>2</sub> to hydrostatic pressure Open
Two-dimensional van der Waals ferromagnet Fe 3 GeTe 2 (FGT) holds a great potential for applications in spintronic devices due to its high Curie temperature, easy tunability, and excellent structural stability in air. Theoretical studies h…
View article: Spinless topological chirality from Umklapp scattering in twisted 3D structures
Spinless topological chirality from Umklapp scattering in twisted 3D structures Open
Spinless systems exhibit unique topological characteristics compared to spinful ones, stemming from their distinct algebra. Without chiral interactions typically linked to spin, an intriguing yet unexplored interplay between topological an…
View article: Type-II antiferromagnetic ordering in the double perovskite oxide <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Sr</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>NiWO</mml:mi><mml:mn>6</mml:mn></mml:msub></mml:mrow></mml:math>
Type-II antiferromagnetic ordering in the double perovskite oxide Open
Magnetic double perovskite (DP) compounds provide a fertile playground to explore interesting electronic and magnetic properties. By complementary macroscopic characterizations, neutron powder diffraction measurements, and first-principles…
View article: Type-II antiferromagnetic ordering in double perovskite oxide Sr$_2$NiWO$_6$
Type-II antiferromagnetic ordering in double perovskite oxide Sr$_2$NiWO$_6$ Open
Magnetic double perovskite compounds provide a fertile playground to explore interesting electronic and magnetic properties. By complementary macroscopic characterizations, neutron powder diffraction measurements and first-principles calcu…
View article: Three-dimensional real Chern insulator in bulk $γ$-graphyne
Three-dimensional real Chern insulator in bulk $γ$-graphyne Open
The real Chern insulator state, featuring nontrivial real Chern number and second-order boundary modes, has been revealed in a few two-dimensional systems. The concept can be extended to three dimensions (3D), but a proper material realiza…
View article: Realization of a Hopf Insulator in Circuit Systems
Realization of a Hopf Insulator in Circuit Systems Open
Three-dimensional (3D) two-band Hopf insulators are a paradigmatic example of topological phases beyond the topological classifications based on powerful methods like K theory and symmetry indicators. Since this class of topological insula…
View article: Spin supersolidity in nearly ideal easy-axis triangular quantum antiferromagnet Na2BaCo(PO4)2
Spin supersolidity in nearly ideal easy-axis triangular quantum antiferromagnet Na2BaCo(PO4)2 Open
View article: Zigzag magnetic order in a novel tellurate compound Na4−δNiTeO6 with S = 1 chains
Zigzag magnetic order in a novel tellurate compound Na4−δNiTeO6 with S = 1 chains Open
View article: Second-order and real Chern topological insulator in twisted bilayer <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>α</mml:mi></mml:math>-graphyne
Second-order and real Chern topological insulator in twisted bilayer -graphyne Open
The study of higher-order and real topological states as well as the material\nrealization have become a research forefront of topological condensed matter\nphysics in recent years. Twisted bilayer graphene (tbG) is proved to have\nhigher-…
View article: Monolayer and bilayer PtCl$_3$: Energetics, magnetism, and band topology
Monolayer and bilayer PtCl$_3$: Energetics, magnetism, and band topology Open
Two-dimensional (2D) magnetic materials hosting nontrivial topological states are interesting for fundamental research as well as practical applications. Recently, the topological state of 2D Weyl half-semimetal (WHS) was proposed, which h…
View article: Topological hinge modes in Dirac semimetals
Topological hinge modes in Dirac semimetals Open
Dirac semimetals (DSMs) are an important class of topological states of matter. Here, focusing on DSMs of band inversion type, we investigate their boundary modes from the effective model perspective. We show that in order to properly capt…
View article: I4/mcm-Si$_{48}$: An Ideal Topological Nodal-Line Semimetal
I4/mcm-Si$_{48}$: An Ideal Topological Nodal-Line Semimetal Open
Topological semimetals (TSMs) have attracted numerous attention due to their exotic physical properties and great application potentials. Silicon-based TMSs are of particularly importance because of their high abundance, nontoxicity and na…
View article: Spin Supersolidity in Nearly Ideal Easy-axis Triangular Quantum Antiferromagnet Na$_2$BaCo(PO$_4$)$_2$
Spin Supersolidity in Nearly Ideal Easy-axis Triangular Quantum Antiferromagnet Na$_2$BaCo(PO$_4$)$_2$ Open
Prototypical models and their material incarnations are cornerstones to the understanding of quantum magnetism. Here we show theoretically that the recently synthesized magnetic compound Na$_2$BaCo(PO$_4$)$_2$ (NBCP) is a rare, nearly idea…
View article: Doping-induced structural transformation in the spin-1/2 triangular-lattice antiferromagnet Na2Ba1-xSrxCo(PO4)2
Doping-induced structural transformation in the spin-1/2 triangular-lattice antiferromagnet Na2Ba1-xSrxCo(PO4)2 Open
View article: Second-Order Real Nodal-Line Semimetal in Three-Dimensional Graphdiyne
Second-Order Real Nodal-Line Semimetal in Three-Dimensional Graphdiyne Open
Real topological phases featuring real Chern numbers and second-order boundary modes have been a focus of current research, but finding their material realization remains a challenge. Here, based on first-principles calculations and theore…
View article: Multiple magnetism-controlled topological states in EuAgAs
Multiple magnetism-controlled topological states in EuAgAs Open
The interplay between magnetism and band topology is a focus of current research on magnetic topological systems. Based on first-principle calculations and symmetry analysis, we reveal multiple intriguing topological states can be realized…
View article: Kosterlitz-Thouless melting of magnetic order in the triangular quantum Ising material TmMgGaO4
Kosterlitz-Thouless melting of magnetic order in the triangular quantum Ising material TmMgGaO4 Open
View article: The Ghost of a Vanishing Stripe Order in the Triangular Quantum Ising Magnet TmMgGaO$_4$
The Ghost of a Vanishing Stripe Order in the Triangular Quantum Ising Magnet TmMgGaO$_4$ Open
Frustrated magnets host the promises of material realizations of new paradigm of quantum matter, while direct comparison of unbiased model calculations with experimental measurements is still very challenging. Here, we design and implement…