Results 61 to 70 of about 3,784,223 (275)
Electrically Tunable On‐Chip Topological Photonics with Integrated Carbon Nanotubes
Advanced Functional Materials, EarlyView.This work demonstrates electrically tunable on‐chip topological THz devices by integrating 2D carbon nanotube (CNT) sheets with valley‐Hall photonic crystals, enabling broadband transmission modulation (71% modulation depth) and tunable narrowband filtering (0.54 GHz shift) through electrically induced thermal tuning. This advancement paves the way for
Jifan Yin +7 more
wiley +1 more source
Infinitely Many Standing Waves for the Nonlinear Chern-Simons-Schrödinger Equations
Advances in Mathematical Physics, 2015 We prove the existence of infinitely many solutions of the nonlinear Chern-Simons-Schrödinger equations under a wide class of nonlinearities. This class includes the standard power-type nonlinearity with exponent p>4.
Jinmyoung Seok
doaj +1 more source
Anomalies of (0,4) SCFTs from F-theory
Journal of High Energy Physics, 2020 We study the macroscopics of 2d N $$ \mathcal{N} $$ = (0, 4) SCFTs arising from F-theory constructions. The class of 2d SCFTs we consider live on black strings which are obtained by wrapping D3-branes on a curve in the base of a possibly singular ...
Christopher Couzens +3 more
doaj +1 more source
Super-Chern-Simons spectra from exceptional field theory
Journal of High Energy Physics, 2021 Exceptional Field Theory has been recently shown to be very powerful to compute Kaluza-Klein spectra. Using these techniques, the mass matrix of Kaluza-Klein vector perturbations about a specific class of AdS4 solutions of D = 11 and massive type IIA ...
Oscar Varela
doaj +1 more source
Towards large-Chern-number topological phases by periodic quenching
, 2016 Topological phases with large Chern numbers have important implications. They were previously predicted to exist by considering fabricated long-range interactions or multi-layered materials.
An, Jun-Hong +2 more
core +1 more source
On Ginzburg’s bivariant Chern classes [PDF]
Transactions of the American Mathematical Society, 2003 The convolution product is an important tool in geometric representation theory. Ginzburg constructed the “bivariant" Chern class operation from a certain convolution algebra of Lagrangian cycles to the convolution algebra of Borel-Moore homology. In this paper we prove a “constructible function version" of one of Ginzburg’s results; motivated by its ...
openaire +1 more source
Advanced Functional Materials, EarlyView.The study explores structural and magnetic properties of one of the most recent topological quantum materials (MnBi2Te4). The Mn‐poor structure leads to stacking faults (quintuple layer ‐ QL of Bi2Te3 formation instead of a septuple layer ‐ SL of MnBi2Te4), resulting in a coexistence between weak antiferromagnetism and ferromagnetism.
Wesley F. Inoch +10 more
wiley +1 more source
Bulk-edge and bulk-hinge correspondence in inversion-symmetric insulators
Physical Review Research, 2020 We show that a slab of a three-dimensional inversion-symmetric higher-order topological insulator (HOTI) in class A is a 2D Chern insulator, and that in class AII is a 2D Z_{2} topological insulator.
Ryo Takahashi +2 more
doaj +1 more source
A note on the Hamiltonian structure of transgression forms
Journal of High Energy Physics, 2023 By incorporating two gauge connections, transgression forms provide a generalization of Chern-Simons actions that are genuinely gauge-invariant on bounded manifolds.
Pablo Pais +2 more
doaj +1 more source
Observation of Dislocation Bound States and Skin Effects in Non‐Hermitian Chern Insulators
Advanced Materials, EarlyView.Experimental observation of the dislocation‐induced bound states and skin effects is demonstrated in a line‐gap non‐Hermitian acoustic lattice. By utilizing active meta‐atoms to measure the full complex spectrum and biorthogonal eigenstates, the study reveals the exceptional‐point‐driven melting of defect modes.
Jia‐Xin Zhong, Bitan Roy, Yun Jing
wiley +1 more source