Topological states of non-Hermitian systems

VM Martinez Alvarez, JE Barrios Vargas… - The European Physical …, 2018 - Springer
Recently, the search for topological states of matter has turned to non-Hermitian systems,
which exhibit a rich variety of unique properties without Hermitian counterparts. Lattices …

Valley topological phases in bilayer sonic crystals

J Lu, C Qiu, W Deng, X Huang, F Li, F Zhang, S Chen… - Physical review …, 2018 - APS
Recently, the topological physics in artificial crystals for classical waves has become an
emerging research area. In this Letter, we propose a unique bilayer design of sonic crystals …

Experimental observation of edge states in SSH-Stub photonic lattices

G Cáceres-Aravena, B Real, D Guzmán-Silva… - Physical Review …, 2022 - APS
We reveal unconventional edge states in a one-dimensional Stub lattice of coupled
waveguides with staggered hoppings. The edge states appear for the same values of …

Introduction to graphene-based nanomaterials: from electronic structure to quantum transport

LEFF Torres, S Roche, JC Charlier - MRS BULLETIN, 2015 - cambridge.org
The electronic structure of rare earths is an important topic (covered in chapter 8), and the
4felectron configuration determines their properties, including magnetic and optical …

Giant interatomic energy-transport amplification with nonreciprocal photonic topological insulators

P Doyeux, SAH Gangaraj, GW Hanson, M Antezza - Physical Review Letters, 2017 - APS
We show that the energy-transport efficiency in a chain of two-level emitters can be
drastically enhanced by the presence of a photonic topological insulator (PTI). This is …

Reconfigurable microwave photonic topological insulator

M Goryachev, ME Tobar - Physical Review Applied, 2016 - APS
Using full 3D finite-element simulation and underlining Hamiltonian models, we demonstrate
reconfigurable photonic analogues of topological insulators on a regular lattice of tunable …

One-way transport in laser-illuminated bilayer graphene: A Floquet isolator

V Dal Lago, E Suárez Morell, LEF Foa Torres - Physical Review B, 2017 - APS
We explore the Floquet band structure and electronic transport in laser-illuminated bilayer
graphene ribbons. By using a bias voltage perpendicular to the graphene bilayer we show …

Dissipation-enhanced unidirectional transport in topological systems

M Lu, XZ Liu, H Li, ZQ Zhang, J Liu, XC Xie - Physical Review B, 2024 - APS
Dissipation is a common occurrence in real-world systems and is generally considered
detrimental to transport. In this paper, we examine the transport properties of a narrow …

Spin-polarized tunable photocurrents

M Berdakin, EA Rodríguez-Mena, LEF Foa Torres - Nano Letters, 2021 - ACS Publications
Harnessing the unique features of topological materials for the development of a new
generation of topological based devices is a challenge of paramount importance. Using …

Magnetoelectronic and optical properties of nonuniform graphene nanoribbons

HC Chung, YT Lin, SY Lin, CH Ho, CP Chang, MF Lin - Carbon, 2016 - Elsevier
The electronic and optical properties of nonuniform bilayer graphene nanoribbons are worth
investigating as they exhibit rich magnetic quantization. Based on our numerical results …