Results 51 to 60 of about 220,627 (193)

Partitioning Hückel–London Currents into Cycle Contributions

Chemistry, 2021
Ring-current maps give a direct pictorial representation of molecular aromaticity. They can be computed at levels ranging from empirical to full ab initio and DFT.
Wendy Myrvold, Patrick W. Fowler, Joseph Clarke   +2 more
doaj   +1 more source

Current Events at Saturn: Ring–Planet Electromagnetic Coupling

The Planetary Science Journal
This study presents a synthesized analysis of in situ and ground-based observations to investigate electromagnetic coupling between Saturn and its rings. During the Cassini Grand Finale, the magnetometer detected gradients in the azimuthal magnetic field
Omakshi Agiwal, Hao Cao, Hsiang-Wen Hsu, Luke Moore, Ali H. Sulaiman, James O’Donoghue, Michele K. Dougherty   +6 more
doaj   +1 more source

Geometry and linearly polarized cavity photon effects on the charge and spin currents of spin-orbit interacting electrons in a quantum ring

, 2013
We calculate the persistent spin current inside a quantum ring as a function of the strength of the Rashba or Dresselhaus spin-orbit interaction. We provide analytical results for the spin current of a one-dimensional (1D) ring of non-interacting ...
Arnold, Thorsten, Gudmundsson, Vidar, Manolescu, Andrei, Tang, Chi-Shung   +3 more
core   +1 more source

Persistent and radiation-induced currents in distorted quantum rings [PDF]

, 2005
Persistent and radiation-induced currents in distorted narrow quantum rings are theoretically investigated. We show that ring distorsions can be described using a geometrical potential term.
Carlo Piermarocchi, H. Mathur, L. I. Magarill, L. I. Magarill, M. Büttiker, M. Moskalets, O. Entin-Wohlman, S. N. Shevchenko, Yuriy V. Pershin   +8 more
core   +3 more sources

Persistent Currents of Single Mesoscopic Rings [PDF]

Europhysics Letters (EPL), 1992
We study the stochastic fluctuations (from sample to sample) in the persistent current I() of mesoscopic rings threaded by a flux . We find that it is necessary to include the Coulomb interaction between the electrons. Then we obtain I21/2 ~ (L/l)I ~ evF/L; and h/e for the dominant period in .
Eckern, Ulrich, Schmid, Albert
openaire   +2 more sources

Simulation of Dynamic Evolution of Ring Current Ion Flux by a Lunar Base Energetic Neutral Atom (ENA) Imaging

Astronomy, 2023
The distribution of energetic ion flux in the ring current region, such as a meteorological cumulonimbus cloud, stores up the particle energy for a geomagnetic substorm.
Li Lu, Qinglong Yu, Shuai Jia, Zhong Xie, Jian Lan, Yuan Chang   +5 more
doaj   +1 more source

Parameters of current systems in the magnetosphere as derived from observations of cosmic rays during the June 2015 magnetic storm

Solar-Terrestrial Physics, 2017
Basing on measurements of cosmic rays at the worldwide network of stations, we calculate variations in the planetary system of geomagnetic cutoff rigidity for the 2015 June moderate geomagnetic storm.
Kichigin G.N., Kravtsova M.V., Sdobnov V.E.   +2 more
doaj   +1 more source

Alternating behavior in furan-acetylene macrocycles reveals the size-dependency of Hückel’s rule in neutral molecules

Communications Chemistry, 2023
Aromaticity can be assigned by Hückel’s rule, which predicts that planar rings with delocalized (4n + 2) π-electrons are aromatic, whereas those with 4n π-electrons are antiaromatic.
Yuval Rahav, Shinaj K. Rajagopal, Or Dishi, Benny Bogoslavsky, Ori Gidron   +4 more
doaj   +1 more source

Persistent currents in a strongly interacting multicomponent Bose gas on a ring

Comptes Rendus. Physique, 2023
We consider a two-component Bose–Bose mixture at infinitely strong repulsive interactions in a tightly confining, one-dimensional ring trap and subjected to an artificial gauge field.
Pecci, Giovanni, Aupetit-Diallo, Gianni, Albert, Mathias, Vignolo, Patrizia, Minguzzi, Anna   +4 more
doaj   +1 more source

Double-valuedness of the electron wave function and rotational zero-point motion of electrons in rings

, 2010
I propose that the phase of an electron's wave function changes by $\pi$ when the electron goes around a loop maintaining phase coherence. Equivalently, that the minimum orbital angular momentum of an electron in a ring is $\hbar/2$ rather than zero as ...
Blatt J. M., Einstein A., J. E. HIRSCH, Merzbacher E., Pauli W., Riess J., Schrödinger E.   +6 more
core   +1 more source