784 citations · 1.4k across the 9 of their papers we have counts for
9 papers
Non-Hermitian Higher-Order Weyl Semimetals
Sayed Ali Akbar Ghorashi, Tianhe Li, Masatoshi Sato
We study non-Hermitian higher-order Weyl semimetals (NHHOWSMs) possessing real spectra and having inversion (-NHHOWSM) or time-reversal symmetry $\mathca…
Non-Hermitian Higher-Order Dirac Semimetals
Sayed Ali Akbar Ghorashi, Tianhe Li, Masatoshi Sato +1
In this article we study 3D non-Hermitian higher-order Dirac semimetals (NHHODSMs). Our focus is on -symmetric non-Hermitian systems where we investigate inversion ($\mathcal{…
Bound states at partial dislocation defects in multipole higher-order topological insulators
Sasha S. Yamada, Tianhe Li, Mao Lin +3
The bulk-boundary correspondence, which links a bulk topological property of a material to the existence of robust boundary states, is a hallmark of topological insulators. However…
Higher-order Weyl Semimetals
Sayed Ali Akbar Ghorashi, Tianhe Li, Taylor L. Hughes
We investigate higher-order Weyl semimetals (HOWSMs) having bulk Weyl nodes attached to both surface and hinge Fermi arcs. We identify a new type of Weyl node, that we dub a …
Observation of trapped fractional charge and topological states at disclination defects in higher-order topological insulators
Christopher W. Peterson, Tianhe Li, Wentao Jiang +2
Topological crystalline insulators (TCIs) can exhibit unique, quantized electric phenomena such as fractional electric polarization and boundary-localized fractional charge. This q…
A fractional corner anomaly reveals higher-order topology
Christopher W. Peterson, Tianhe Li, Wladimir A. Benalcazar +2
Spectral measurements of boundary localized in-gap modes are commonly used to identify topological insulators via the bulk-boundary correspondence. This can be extended to high-ord…
Fractional disclination charge in two-dimensional symmetric topological crystalline insulators
Tianhe Li, Penghao Zhu, Wladimir A. Benalcazar +1
Robust fractional charge localized at disclination defects has been recently found as a topological response in symmetric 2D topological crystalline insulators (TCIs). In t…
Quantization of fractional corner charge in -symmetric higher-order topological crystalline insulators
Wladimir A. Benalcazar, Tianhe Li, Taylor L. Hughes
In the presence of crystalline symmetries, certain topological insulators present a filling anomaly: a mismatch between the number of electrons in an energy band and the number of…
Complete phase diagram and topological properties of interacting bosons in one-dimensional superlattices
Tianhe Li, Huaiming Guo, Shu Chen +1
The interacting bosons in one-dimensional inversion-symmetric superlattices are investigated from the topological aspect. The complete phase diagram is obtained by an atomic-limit…