Results 21 to 30 of about 2,377,765 (304)

Rotation controlled topological edge states in a trimer chain composed of meta-atoms

open access: yesNew Journal of Physics, 2022
Recently, topological chains have attracted extensive attention because of their simple structure, rich physics and important applications. In this work, we theoretically and experimentally uncover that the abundant topological phases of periodic trimer ...
Zhiwei Guo   +6 more
doaj   +1 more source

Abnormal Wave Propagation in Tilted Linear‐Crossing Metamaterials

open access: yesAdvanced Photonics Research, 2021
The propagation properties of electromagnetic waves depend on media dispersion in momentum space, which can be characterized using isofrequency contours (IFCs).
Zhiwei Guo, Haitao Jiang, Hong Chen
doaj   +1 more source

Variations on the concept of topological transitivity [PDF]

open access: yesStudia Mathematica, 2016
We describe various strengthenings of the concept of topological transitivity. Especially when one departs from the family of invertible systems, a number of interesting properties arise. We present the architecture of implications among ten reasonable notions of transitivity.
Akin, Ethan   +2 more
openaire   +3 more sources

Massive Dirac fermion observed in lanthanide-doped topological insulator thin films [PDF]

open access: yes, 2015
This publication arises from research funded by the John Fell Oxford University Press (OUP) Research Fund, a DARPA MESO Project (No. N66001-11-1-4105), and funding from the European Union Seventh Framework Programme under Grant Agreement 312483 – ESTEEM2
Srot, V   +40 more
core   +1 more source

Research Progress on the Application of Topological Phase Transition Materials in the Field of Memristor and Neuromorphic Computing

open access: yesSensors, 2023
Topological phase transition materials have strong coupling between their charge, spin orbitals, and lattice structure, which makes them have good electrical and magnetic properties, leading to promising applications in the fields of memristive devices ...
Runqing Zhang   +5 more
doaj   +1 more source

Conceptions of topological transitivity

open access: yesTopology and its Applications, 2012
There are several different common definitions of a property in topological dynamics called "topological transitivity," and it is part of the folklore of dynamical systems that under reasonable hypotheses, they are equivalent. Various equivalences are proved in different places, but the full story is difficult to find.
Akin, Ethan, Carlson, Jeffrey D.
openaire   +3 more sources

Effects of spin symmetry breaking in topological insulators [PDF]

open access: yes, 2015
Topological insulators are one of the most thoroughly investigated systems in condensed matter physics over the last years. In these systems, a prominent role is inevitably taken by time-reversal symmetry, which leads to Kramers theorem and symmetry ...
Orth, Christoph
core   +1 more source

Spin pumping in ferromagnet-topological insulator-ferromagnetheterostructures [PDF]

open access: yes, 2015
Topological insulators (TIs) are enticing prospects for the future of spintronics due to their large spin-orbit coupling and dissipationless, counter-propagating conduction channels in the surface state.
Baker, A. A.   +8 more
core   +1 more source

Theory of Dirac Electrons in Organic Conductors

open access: yesCrystals, 2012
The dynamical property of electrons with the tilted Dirac cone was examined using the tilted Weyl equation. The polarization function exhibits cusps and nonmonotonic structures by varying both the frequency and the momentum.
Akito Kobayashi, Yoshikazu Suzumura
doaj   +1 more source

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