Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Ai-Lei He"'
Publikováno v:
New Journal of Physics, Vol 26, Iss 3, p 033003 (2024)
Chern insulators have been recently extended to quasicrystal systems, namely the quasi-periodic Chern insulators (QCIs). Here we study the topological properties and topological response of QCIs on two-dimensional singular surfaces. Such singular QCI
Externí odkaz:
https://doaj.org/article/22000f03bac24b5abcaf151d9b2d470e
Publikováno v:
Physical Review Research, Vol 4, Iss 4, p 043151 (2022)
Studies of twisted moiré systems have been mainly focused on two-dimensional (2D) materials such as graphene with Dirac points and transition-metal dichalcogenides so far. Here we propose a twisted bilayer of 2D systems which feature stable quadrati
Externí odkaz:
https://doaj.org/article/213ff0258f1b4fb98e8aa06214b3edfb
Publikováno v:
Physical Review B. 107
Publikováno v:
Physical Review B. 106
Publikováno v:
Physical Review B. 104
A prominent characteristic of two-dimensional higher-order topological insulators (2D-HOTIs) is the topologically protected corner modes associated with gapped edge states. Opening the gap of bulk and edge states is a key to realizing 2D-HOTIs. In th
The bulk-boundary correspondence is a generic feature of topological states of matter, reflecting the intrinsic relation between topological bulk and boundary states. For example, robust edge states propagate along the edges and corner states gather
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa86ec64c1d2d2924782526de4284350
http://arxiv.org/abs/2109.07895
http://arxiv.org/abs/2109.07895
Publikováno v:
Physical Review B. 104
The integer quantum Hall state occurs when the Landau levels are fully occupied by the fermions, while the fractional quantum Hall state usually emerges when the Landau level is partially filled by the strongly correlated fermions or bosons. Here, we
Publikováno v:
Journal of physics. Condensed matter : an Institute of Physics journal. 33(47)
We explore extensively topological quantum phase transitions (TQPTs) of the breathing kagome lattice model in the presence of staggered fluxes. We obtain rich topological phases, including the Chern insulator (CI) and the second-order topological ins
Autor:
Ai-Lei He
Publikováno v:
Physical Review B. 103
Fractional Chern insulator (FCI) states have been proposed in singular lattices with arbitrary $n$-fold rotational symmetry. Particles occupy non-defect-core orbitals in previously reported FCIs. However, the role of defect-core orbitals in the singu
Publikováno v:
Physical Review B. 102
Interacting quantum many-body systems often generate exotic orders, either topological or conventional competing orders. Understanding these phases and the phase transitions between them are common issues in condensed-matter physics. How to character