Results 101 to 110 of about 1,274,174 (295)

Symmetry-controlled edge states in the type-II phase of Dirac photonic lattices

Nature Communications, 2020
The electrons in 2D materials like graphene are described by the relativistic Dirac equation. Here the authors present a lattice of evanescently coupled waveguides that emulates a wide range of Dirac excitations and study the type-II edge states that ...
Georgios G. Pyrialakos, Nora Schmitt, Nicholas S. Nye, Matthias Heinrich, Nikolaos V. Kantartzis, Alexander Szameit, Demetrios N. Christodoulides   +6 more
doaj   +1 more source

Holomorphic Spinors and the Dirac Equation

Annals of Global Analysis and Geometry, 1999
A closed spin Kähler manifold of positive scalar curvature with smallest possible first eigenvalue of the Dirac operator is characterized by holomorphic spinors. It is shown that on any spin Kähler-Einstein manifold each holomorphic spinor is a finite sum of eigenspinors of the square of the Dirac operator.
openaire   +3 more sources

Solving the Dirac Equation: Using Fourier Transform [PDF]

, 2014
When looking at the spin of a particle, the Dirac Equation is used to explain the significance of the spin. Here we solve Dirac Equation using the Fourier Transform, as well as explain and define the terms of the Dirac Equation.
Bell, Vincent P.
core   +1 more source

Discrete exterior geometry approach to structure-preserving discretization of distributed-parameter port-Hamiltonian systems [PDF]

, 2011
This paper addresses the issue of structure-preserving discretization of open distributed-parameter systems with Hamiltonian dynamics. Employing the formalism of discrete exterior calculus, we introduce a simplicial Dirac structure as a discrete analogue
Seslija, Marko,, Scherpen, Jacquelien M.A.,, van der Schaft, Abraham, van der Schaft, Abraham; id_orcid, Arjan Van Der Schaft, Jacquelien M. A. Scherpen, van der Schaft, Arjan, Scherpen, Jacquelien M.A., Seslija, Marko, van der Schaft, Arjan ; id_orcid, Marko Seslija, Schaft, Arjan van der,   +11 more
core   +3 more sources

High‐Pressure Modulation of Breathing Kagome Lattice: Cascade of Lifshitz Transitions and Evolution of the Electronic Structure

Advanced Science, EarlyView.
External pressure directly tunes the breathing distortion of the kagome lattice in Fe3Sn2, suppressing it near 15 GPa and reversing it at higher pressures. This structural modulation drives a cascade of Lifshitz transitions, reconstructs the Fermi surface, strengthens electronic correlations and carrier localization, and modifies ultrafast electron ...
Marcos Vinicius Gonçalves‐Faria, Maxim Wenzel, Yuk Tai Chan, Olga Iakutkina, Francesco Capitani, Davide Comboni, Michael Hanfland, Qi Wang, Hechang Lei, Martin Dressel, Alexander A. Tsirlin, Alexej Pashkin, Stephan Winnerl, Manfred Helm, Ece Uykur   +14 more
wiley   +1 more source

Spin and Pseudospin Symmetry in Generalized Manning-Rosen Potential

Advances in High Energy Physics, 2015
Spin and pseudospin symmetric Dirac spinors and energy relations are obtained by solving the Dirac equation with centrifugal term for a new suggested generalized Manning-Rosen potential which includes the potentials describing the nuclear and molecular ...
Hilmi Yanar, Ali Havare
doaj   +1 more source

Bound state solutions of a Dirac particle undergoing a tensor interaction potentials via asymptotic iteration method

Journal of Taibah University for Science, 2020
Bound state solutions of a quantum Dirac particle with a tensor interactions terms are investigated by Asymptotic Iteration Method. The eigenvalues are calculated for tensor potentials and formulated into closed forms.
K. S. Alsadi
doaj   +1 more source

P.A.M. Dirac

, 1962
Audio recording of talk by P. A. M.
Dirac, P.A.M.
core   +2 more sources

Photoconductivity in Dirac materials

AIP Advances, 2015
Two-dimensional (2D) Dirac materials including graphene and the surface of a three-dimensional (3D) topological insulator, and 3D Dirac materials including 3D Dirac semimetal and Weyl semimetal have attracted great attention due to their linear Dirac ...
J. M. Shao, G. W. Yang
doaj   +1 more source

From Sensing Mechanisms to System Co‐Design: Graphene‐Based Sensors and Readout Circuits

Advanced Science, EarlyView.
This review establishes a unified PS–EQ–RF framework linking graphene sensing mechanisms, native electrical outputs, and output‐specific readout circuits. Voltage‐, current‐, resistance‐, and capacitance‐type sensing systems are systematically classified to guide architecture selection, low‐noise design, system co‐design, and practical integration ...
Jinduo Zhang, Meng Chen, Guanchen Li, Ruifeng Liu, Yingxin Wang, Ziran Zhao   +5 more
wiley   +1 more source