Results 21 to 30 of about 260,883 (285)

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

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

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

Perspective: Strongly correlated and topological states in [111] grown transition metal oxide thin films and heterostructures [PDF]

open access: yes, 2020
We highlight recent advances in the theory, materials fabrication, and experimental characterization of strongly correlated and topological states in [111] oriented transition metal oxide thin films and heterostructures, which are notoriously difficult ...
Chakhalian, Jak   +2 more
core   +3 more sources

PERCOLATION TRANSITION AND TOPOLOGY

open access: yesImage Analysis & Stereology, 2017
A number of bidimensional random structures with increasing densities are simulated to explore possible links between Euler-Poincaré characteristic (EPC), or connectivity, and percolation threshold. For each structure model, the percolation threshold is compared with a number of typical points (extrema, zero crossings...) of the EPC curve.
Jouannot-Chesney, Patricia   +2 more
openaire   +5 more sources

Unitary Matrix Models and Phase Transition [PDF]

open access: yes, 1997
We study the unitary matrix model with a topological term. We call the topological term the theta term. In the symmetric model there is the phase transition between the strong and weak coupling regime at $\lambda_{c}=2$. If the Wilson term is bigger than
Hisakado, Masato
core   +2 more sources

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

Topological persistence machine of phase transitions [PDF]

open access: yesPhysical Review E, 2021
12 pages, 8 ...
Quoc Hoan Tran   +2 more
openaire   +3 more sources

Symmetry‐Induced Selective Excitation of Topological States in Su–Schrieffer–Heeger Waveguide Arrays

open access: yesAdvanced Photonics Research, 2023
The investigation of topological state transition in carefully designed photonic lattices is of high interest for fundamental research, as well as for applied studies such as manipulating light flow in on‐chip photonic systems.
Min Tang   +12 more
doaj   +1 more source

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