Results 101 to 110 of about 142,691 (284)

On Mpc-structures and Symplectic Dirac Operators

, 2013
We prove that the kernels of the restrictions of symplectic Dirac or symplectic Dirac-Dolbeault operators on natural subspaces of polynomial valued spinor fields are finite dimensional on a compact symplectic manifold.
Cahen, Michel, Gravy, Laurent La Fuente, Gutt, Simone, Rawnsley, John   +3 more
core   +1 more source

Microwave Absorption for Detection of Dirac Fermions in SnTe Films

Advanced Materials Interfaces, EarlyView.
Microwave absorption can detect Dirac fermions in samples exposed to the atmosphere. Results showed that although topological surface states are robust against environmental degradation, they are not detectable by electrical transport measurements. Hence, microwave absorption can detect Dirac fermions even in samples whose surfaces have deteriorated ...
Wellington P. do Prado, Jorge A. Navarro‐Giraldo, Muhammad Tahsin, Vinicius T. Santana, Eduardo Abramof, Paulo H. O. Rappl, Suelen de Castro, Marcelos L. Peres, Petr Neugebauer   +8 more
wiley   +1 more source

Persistent Mayer Dirac

Journal of Physics: Complexity
Topological data analysis (TDA) has made significant progress in developing a new class of fundamental operators known as the Dirac operator, particularly in topological signals and molecular representations.
Faisal Suwayyid, Guo-Wei Wei
doaj   +1 more source

The role of spin–orbit coupling in topologically protected interface states in Dirac materials

New Journal of Physics, 2014
We highlight the fact that two-dimensional (2D) materials with Dirac-like low energy band structures and spin–orbit coupling (SOC) will produce linearly dispersing topologically protected Jackiw–Rebbi modes at interfaces where the Dirac mass changes sign.
D S L Abergel, Jonathan M Edge, Alexander V Balatsky   +2 more
doaj   +1 more source

Dirac Cat States in Relativistic Landau Levels

, 2007
We show that a relativistic version of Schrodinger cat states, here called Dirac cat states, can be built in relativistic Landau levels when an external magnetic field couples to a relativistic spin 1/2 charged particle. Under suitable initial conditions,
A. Bermudez, E. Schrödinger, E. Schrödinger, E. Schrödinger, E. Solano, E. T. Jaynes, H. K. Avetissian, I. M. Ternov, M. A. Martin-Delgado, M. Nielsen, P. J. Redmond, W. Greiner   +11 more
core   +1 more source

Nambu–Dirac Structures for Lie Algebroids

Letters in Mathematical Physics, 2002
minor ...
openaire   +2 more sources

Direct Photocurrent Detection of Optical Vortex Based on the Orbital Photo Galvanic Effect: Progress, Challenge, and Perspective

Advanced Science, EarlyView.
Direct orbital angular momentum (OAM) detection through the orbital photogalvanic effect offers a scalable route for integrated optoelectronics. This perspective evaluates symmetry‐driven material selection and demonstrates how electrode matrices enable the resolution of complex, mixed OAM modes.
Jinluo Cheng, Dehong Yang, Weiming Wang, Chang Xu, Zipu Fan, Dong Sun   +5 more
wiley   +1 more source

Dirac Cones, Topological Edge States, and Nontrivial Flat Bands in Two-Dimensional Semiconductors with a Honeycomb Nanogeometry

Physical Review X, 2014
We study theoretically two-dimensional single-crystalline sheets of semiconductors that form a honeycomb lattice with a period below 10 nm. These systems could combine the usual semiconductor properties with Dirac bands.
E. Kalesaki, C. Delerue, C. Morais Smith, W. Beugeling, G. Allan, D. Vanmaekelbergh   +5 more
doaj   +1 more source

Lifshitz Transition in Correlated Topological Semimetals

Advanced Science, EarlyView.
Theoretical calculations reveal that in YPtBi and GdPtBi, strong electronic correlations shift topological Dirac nodes away from the Fermi level by forming large hole pockets. This effect is sensitive to temperature and arises from interactions among 4d or 4f electrons, offering insights into Fermi surface engineering in quantum materials.
Byungkyun Kang, Myoung‐Hwan Kim, Chul Hong Park, Anderson Janotti, Eunja Kim   +4 more
wiley   +1 more source

Random Time‐Space Coding Metasurfaces for Spatial Control of the Temporal Statistics of Electromagnetic Fields

Advanced Science, EarlyView.
A probabilistic framework based on random time‐space coding metasurfaces enables control of the spatial distribution of electromagnetic fields temporal statistics. By tailoring the marginal and joint distributions of random codes, electromagnetic fields with desired mean and variance patterns are realized, enabling simultaneous transmission and jamming.
Jia Cheng Li, Jiang Han Bao, Che Liu, Tie Jun Cui   +3 more
wiley   +1 more source