15 citations · 54 across the 19 of their papers we have counts for
19 papers
Anti-higher-order Weyl semimetal
Cheng-Ming Miao, Yu-Hao Wan, Qing-Feng Sun
Higher-order topology extends the bulk-boundary correspondence by enabling corner or hinge localized states. Here we identify an anti-higher-order Weyl semimetal, a three dimension…
Anti-higher-order topological insulators
Cheng-Ming Miao, Yu-Hao Wan, Ying-Tao Zhang +1
Duality is a fundamental concept in physics that connects complementary opposites like particles and holes. Similarly, while topological states in topological insulators localize a…
Second-order topological insulator induced by compensated altermagnetism without bulk spin splitting
Lizhou Liu, Qing-Feng Sun, Ying-Tao Zhang
We theoretically demonstrate a second-order topological insulating phase induced by compensated altermagnetism, while keeping the bulk gap unchanged, in a two-dimensional topologic…
Quantum anomalous Hall effect with tunable Chern numbers induced by d-wave sublattice-staggered altermagnetism
Lizhou Liu, Qing-Feng Sun
We construct a minimal spinful tight-binding model on a square lattice, where a -wave sublattice-staggered altermagnetism drives the quantum anomalous Hall effect. Here the exch…
Engineering Two-Dimensional Hybrid-Order Topological Insulators via Trilayer Coupling
Lizhou Liu, Cheng-Ming Miao, Qing-Feng Sun
We propose an interlayer-engineering scheme to realize a two-dimensional hybrid-order topological insulator, characterized by the coexistence of first-order and second-order topolo…
Majorana modes in helical altermagnet without net magnetism and spin-orbit coupling
Xing-Jian Yi, Yue Mao, Cheng-Ming Miao +1
We propose a scheme to realize topological superconductor and Majorana bound states (MBSs) in a one-dimensional metal nanowire on the surface of a helical altermagnet and in proxim…
Engineering chiral-induced spin selectivity in an artificial topological quantum well
Lizhou Liu, Peng-Yi Liu, Tian-Yi Zhang +1
Chiral-induced spin selectivity (CISS) is a striking phenomenon in which spin-unpolarized electrons become spin-polarized after traversing a chiral medium. Theoretical studies have…
Tunable two-dimensional Dirac-Weyl semimetal phase induced by altermagnetism
Lizhou Liu, Qing-Feng Sun, Ying-Tao Zhang
We demonstrate a tunable Dirac-Weyl semimetal phase in two dimensions, realized by introducing in-plane d-wave altermagnetism into a Dirac system. This phase hosts both a central D…
Helical Fermi Arc in Altermagnetic Weyl Semimetal
Yu-Hao Wan, Cheng-Ming Miao, Peng-Yi Liu +1
We investigate the topological properties of modified Dirac Hamiltonians with an altermagnetic mass term and reveal a novel mechanism for realizing altermagnetic Weyl semimetals. U…
Characterizing second-order topological insulators via entanglement topological invariant in two-dimensional systems
Yu-Long Zhang, Cheng-Ming Miao, Qing-Feng Sun +2
Higher-order topological insulators have attracted significant interest in recent years. However, identifying a universal topological invariant capable of characterizing higher-ord…
Tunable Majorana corner states driven by superconducting phase bias in a vertical Josephson junction
Cheng-Ming Miao, Yu-Hao Wan, Ying-Tao Zhang +1
The realization and manipulation of Majorana zero modes is a key step in achieving topological quantum computation. In this paper, we demonstrate the existence of Majorana corner s…
Two-Dimensional Higher-Order Topological Metals
Lizhou Liu, Cheng-Ming Miao, Qing-Feng Sun +1
We investigate the energy band structure and energy levels of graphene with staggered intrinsic spin-orbit coupling and in-plane Zeeman fields. Our study demonstrates that staggere…
Two-dimensional Dirac semimetals with tunable edge states
Lizhou Liu, Cheng-Ming Miao, Qing-Feng Sun +1
We theoretically propose a design for two-dimensional Dirac semimetals using a bilayer-modified Bernevig-Hughes-Zhang (BHZ) model. By introducing new sites into the BHZ model, we e…
Quantum spin Hall effect in bilayer honeycomb lattices with C-type antiferromagnetic order
Lizhou Liu, Cheng-Ming Miao, Qing-Feng Sun +1
We propose a scheme to realize time-reversal symmetry-broken quantum spin Hall insulators using bilayer honeycomb lattices, combining intrinsic spin-orbit coupling, C-type antiferr…
Two-dimensional higher-order Weyl semimetals
Lizhou Liu, Qing-Feng Sun, Ying-Tao Zhang
We propose a theoretical scheme to realize two-dimensional higher-order Weyl semimetals using a trilayer topological insulator film coupled with a d-wave altermagnet. Our results s…
Classification of Chern Numbers Based on High-Symmetry Points
Yu-Hao Wan, Peng-Yi Liu, Qing-Feng Sun
The Chern number is a crucial topological invariant for distinguishing the phases of Chern insulators. Here we find that for Chern insulators with inversion symmetry, the Chern num…
Universal theory of tunable second-order topological corner states induced by interlayer coupling in twist bilayer Chern insulators
Cheng-Ming Miao, Yu-Hao Wan, Ying-Tao Zhang +1
We propose a universal theory for tunable second-order topological corner states induced by interlayer coupling in bilayer Chern insulators with opposite Chern numbers. We demonstr…
Realization of the Non-endpoint Majorana Bound States in an Extended Kitaev Chain
Xuan Zhang, Cheng-Ming Miao, Qing-Feng Sun +1
We study the energy levels and transport properties of an extended Kitaev chain with a phase gradient. It is demonstrated that the hopping phase difference can effectively induce t…
The General Principle behind Magnetization-induced Second-Order Topological Corner States in the Kane-Mele Model
Cheng-Ming Miao, Lizhou Liu, Yu-Hao Wan +2
We propose a general principle for realizing second-order topological corner states in the modified Kane-Mele model with magnetization. It is demonstrated that the sign of the edge…