Higher-order band topology
A conventional topological insulator (TI) has gapped bulk states but gapless edge states.
The emergence of the gapless edge states is dictated by the bulk topological invariant of the …
The emergence of the gapless edge states is dictated by the bulk topological invariant of the …
Phonon thermal transport and its tunability in GaN for near-junction thermal management of electronics: A review
The heat dissipation issue has now become one of the most important bottlenecks for power
electronics due to the rapid increase in power density and working frequency. Towards the …
electronics due to the rapid increase in power density and working frequency. Towards the …
Observation of an acoustic octupole topological insulator
Berry phase associated with energy bands in crystals can lead to quantised observables like
quantised dipole polarizations in one-dimensional topological insulators. Recent theories …
quantised dipole polarizations in one-dimensional topological insulators. Recent theories …
Chiral-symmetric higher-order topological phases of matter
We introduce novel higher-order topological phases of matter in chiral-symmetric systems
(class AIII of the tenfold classification), most of which would be misidentified as trivial by …
(class AIII of the tenfold classification), most of which would be misidentified as trivial by …
Topological phase transitions in disordered electric quadrupole insulators
We investigate disorder-driven topological phase transitions in quantized electric
quadrupole insulators in two dimensions. We show that chiral symmetry can protect the …
quadrupole insulators in two dimensions. We show that chiral symmetry can protect the …
Circuit realization of topological physics
Recently, topolectrical circuits (TECs) boom in studying the topological states of matter. The
resemblance between circuit Laplacians and tight-binding models in condensed matter …
resemblance between circuit Laplacians and tight-binding models in condensed matter …
Higher-order topological Anderson insulators
We study disorder effects in a two-dimensional system with chiral symmetry and find that
disorder can induce a quadrupole topological insulating phase (a higher-order topological …
disorder can induce a quadrupole topological insulating phase (a higher-order topological …
Topolectric circuits: Theory and construction
We highlight a general theory to engineer arbitrary Hermitian tight-binding lattice models in
electrical LC circuits, where the lattice sites are replaced by the electrical nodes, connected …
electrical LC circuits, where the lattice sites are replaced by the electrical nodes, connected …
Many-body order parameters for multipoles in solids
We propose many-body order parameters for bulk multipoles in crystalline systems,
whenever the bulk multipole moments can be defined in terms of the nontrivial topology of …
whenever the bulk multipole moments can be defined in terms of the nontrivial topology of …
Topological phases without crystalline counterparts
We construct a two-dimensional higher-order topological phase protected by a
quasicrystalline eightfold rotation symmetry. Our tight-binding model describes a …
quasicrystalline eightfold rotation symmetry. Our tight-binding model describes a …