Results 61 to 70 of about 259,006 (285)
, 2011 The band structure of cubic inverse perovskites, Ca_3PbO and its family, are investigated with the first-principles method. A close observation of the band structure reveals that six equivalent Dirac electrons with a very small mass exist on the line ...
Blaha P. +17 more
core +1 more source
Symplectic Dirac operators and $${Mp^{\rm c}}$$ -structures [PDF]
General Relativity and Gravitation, 2011 Given a symplectic manifold $(M, )$ admitting a metaplectic structure, and choosing a positive $ $-compatible almost complex structure $J$ and a linear connection $\nabla$ preserving $ $ and $J$, Katharina and Lutz Habermann have constructed two Dirac operators $D$ and ${\wt{D}}$ acting on sections of a bundle of symplectic spinors.
Cahen, Michel +2 more
openaire +5 more sources
Imaging of Biphoton States: Fundamentals and Applications
Advanced Functional Materials, EarlyView.Quantum states of two photons exhibit a rich polarization and spatial structure, which provides a fundamental resource of strongly correlated and entangled states. This review analyzes the physics of these intriguing properties and explores the various techniques and technologies available to measure them, including the state of the art of their ...
Alessio D'Errico, Ebrahim Karimi
wiley +1 more source
2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics
Advanced Functional Materials, EarlyView.2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit +5 more
wiley +1 more source
Dirac Operator on a 7-Manifold with Deformed G2 Structure
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2012 In this work, we consider the deforming of a G2 structure by a vector field on a 7-manifold. To obtain the metric corresponding to deformed G2 structure, a new map is defined.
Özdemir Nülifer, Aktay Şirin
doaj +1 more source
Strain and Electric Field Modulation of the Electronic Structure of Bilayer Graphene [PDF]
, 2009 We study how the electronic structure of the bilayer graphene (BLG) is changed by electric field and strain from {\it ab initio} density-functional calculations using the LMTO and the LAPW methods.
B. R. K. Nanda, P. Blaha, S. Satpathy
core +2 more sources
Inducing Ferromagnetism by Structural Engineering in a Strongly Spin‐Orbit Coupled Oxide
Advanced Functional Materials, EarlyView.ABSTRACT Magnetic materials with strong spin‐orbit coupling (SOC) are essential for the advancement of spin‐orbitronic devices, as they enable efficient spin‐charge conversion, complex magnetic structures, spin‐valley physics, topological phases and other exotic phenomena.
Ji Soo Lim +19 more
wiley +1 more source
AIP Advances, 2015 Analysis of the electronic properties of a two-dimensional (2D) deformed honeycomb structure arrayed by semiconductor quantum dots (QDs) is conducted theoretically by using tight-binding method in the present paper.
Juan Peng +3 more
doaj +1 more source
Evolution of magnetic Dirac bosons in a honeycomb lattice
, 2017 We examine the presence and evolution of magnetic Dirac nodes in the Heisenberg honeycomb lattice. Using linear spin theory, we evaluate the collinear phase diagram as well as the change in the spin dynamics with various exchange interactions.
Balatsky, A. V. +2 more
core +1 more source
Advanced Functional Materials, EarlyView.InSb, a narrow‐bandgap semiconductor with high carrier mobility, is promising for thermoelectric energy conversion but suffers from high lattice thermal conductivity and strong bipolar conduction. Here, in situ interface engineering using Co2O3 nanoprecursors forms hierarchical CoSbx/In2O3/CoSb3 heterostructures that enhance phonon scattering and ...
Jiwu Xin +10 more
wiley +1 more source