Results 101 to 110 of about 30,912 (244)

Population inversion in Landau-quantized graphene

open access: yes, 2014
Landau level lasers have the advantage of tunability of the laser frequency by means of the external magnetic field. The crucial prerequisite of such a laser is a population inversion between optically coupled Landau levels. Efficient carrier-carrier and carrier-phonon scattering generally suppresses this effect in conventional materials.
Wendler, Florian, Malic, Ermin
openaire   +2 more sources

FTheoryTools: Advancing Computational Capabilities for F‐Theory Research

open access: yesFortschritte der Physik, Volume 74, Issue 1, January 2026.
Abstract A primary goal of string phenomenology is to identify realistic four‐dimensional physics within the landscape of string theory solutions. In F‐theory, such solutions are encoded in the geometry of singular elliptic fibrations, whose study often requires particularly challenging and cumbersome computations.
Martin Bies   +2 more
wiley   +1 more source

Landau damping of quantum plasmons in metal nanostructures

open access: yesNew Journal of Physics, 2013
Using the random phase approximation with both real space and discrete electron–hole (e–h) pair basis sets, we study the broadening of surface plasmons in metal structures of reduced dimensionality, where Landau damping is the dominant dissipation ...
Xiaoguang Li, Di Xiao, Zhenyu Zhang
doaj   +1 more source

A theorem concerning Fourier transforms: A survey

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 1, January 2026.
Abstract In this note, we highlight the impact of the paper G. H. Hardy, A theorem concerning Fourier transforms, J. Lond. Math. Soc. (1) 8 (1933), 227–231 in the community of harmonic analysis in the last 90 years, reviewing, on one hand, the direct generalizations of the main results and, on the other hand, the different connections to related areas ...
Aingeru Fernández‐Bertolin, Luis Vega
wiley   +1 more source

Confinement Driven Spin‐Texture Evolution in Directly Written Nanomagnets

open access: yesAdvanced Functional Materials, Volume 35, Issue 49, December 2, 2025.
Spin‐texture is directly written by triggering lattice ordering locally at the nanoscale. Geometric confinement drives the formation of spin‐textures such as Néel walls with perpendicular core spins, essential for technological applications. Abstract In low‐dimensional magnetic structures, magnetostatic energy minimization yields a uniform spin‐texture,
Md. Shadab Anwar   +11 more
wiley   +1 more source

Tunable quantized spin Hall effect of light in graphene

open access: yesResults in Physics
The spin Hall effect of light is an appealing toolset for metrology that holds incredible potential for precision measurements due to its high sensitivity to the refractive index and nanostructure physical parameters.
Muzamil Shah   +5 more
doaj   +1 more source

Quantum Hall effect and Landau levels in the three-dimensional topological insulator HgTe

open access: yesPhysical Review Research, 2020
We review low- and high-field magnetotransport in 80-nm-thick strained HgTe, a material that belongs to the class of strong three-dimensional topological insulators.
J. Ziegler   +4 more
doaj   +1 more source

Thin films of a three-dimensional topological insulator in a strong magnetic field: a microscopic study

open access: yes, 2015
The response of thin films of Bi$_2$Se$_3$ to a strong perpendicular magnetic field is investigated by performing magnetic bandstructure calculations for a realistic multi-band tight-binding model.
Canali, C. M.   +2 more
core   +1 more source

Modern theory of magnetic breakdown

open access: yes, 2017
The modern semiclassical theory of a Bloch electron in a magnetic field encompasses the orbital magnetization and geometric phase. Beyond this semiclassical theory lies the quantum description of field-induced tunneling between semiclassical orbits ...
Alexandradinata, A., Glazman, Leonid
core   +1 more source

Insulator, semiclassical oscillations and quantum Hall liquids at low magnetic fields

open access: yes, 2012
Magneto-transport measurements are performed on two-dimensional GaAs electron systems to probe the quantum Hall (QH) effect at low magnetic fields.
Bird, J P   +11 more
core   +2 more sources

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