Results 31 to 40 of about 220,627 (193)
Ring currents in azulene [PDF]
Chemical Physics Letters, 2009 We propose a self consistent polarisable ion tight binding theory for the study of push–pull processes in aromatic molecules. We find that the method quantitatively reproduces ab initio calculations of dipole moments and polarisability. We apply the scheme in a simulation which solves the time dependent Schrodinger equation to follow the relaxation of ...
Paxton, Anthony +2 more
openaire +2 more sources
Equilibrium currents in a Corbino graphene ring
Condensed Matter Physics, 2014 We address the description of a graphene Corbino disk in the context of a tight binding approach that includes both kinetic and Rashba spin-orbit coupling due to an external out-of-plane electric field.
A. López +3 more
doaj +1 more source
Role of the magnetospheric and ionospheric currents in the generation of the equatorial scintillations during geomagnetic storms [PDF]
Annales Geophysicae, 2004 The equatorial ionosphere parameters, Kp, Dst, AU and AL indices characterized contribution of different magnetospheric and ionospheric currents to the H-component of geomagnetic field are examined to test the geomagnetic activity effect on the ...
L. Z. Biktash
doaj +1 more source
Ring current particle distributions derived from ring current magnetic field measurements [PDF]
Journal of Geophysical Research, 1968 Ring current particle energy density distribution for symmetric portion of magnetic storm derived from current magnetic field profile ...
R. A. Hoffman, L. J. Cahill
openaire +1 more source
A quantitative model of the magnetosphere with poloidal vector fields [PDF]
Annales Geophysicae, 1998 A quantitative model of the magnetospheric magnetic field is developed using poloidal vector fields. This formalism is applied to the ring current region, the distant field and the return currents.
J. C. Kosik
doaj +1 more source
Physical Chemistry Chemical Physics, 2016 The π-electron diatropic ring current emerging throughout the trimerization of acetylene to benzene.
MONACO, Guglielmo, ZANASI, Riccardo
openaire +2 more sources
Anales (Asociación Física Argentina), 2022 The ionospheric currents that flow in the E layer, the magnetospheric currents and the induced currents in the lithosphere under the station are the sources of geomagnetic variations in the calm days Sq.
P. A. Sallago
doaj +1 more source
Filtering of spin currents based on ballistic ring [PDF]
, 2007 Quantum interference effects in rings provide suitable means for controlling spin at mesoscopic scales. Here we apply such a control mechanism to the spin-dependent transport in a ballistic quasi one dimensional ring patterned in two dimensional electron
Ando T +20 more
core +1 more source
Basic image and dynamic variation processes of planetary ring currents
地球与行星物理论评Ring currents, an important current system formed by the azimuthal drift of charged particles in planetary magnetospheres, play a key role in disturbing planetary magnetic fields and driving magnetospheric dynamics.
Haobo Fu, Chao Yue
doaj +1 more source
Persistent current in isolated mesoscopic rings
Physical Review B, 1994 Persistant current in isolated mesoscopic rings is studied using the continium and tight-binding models of independent electrons. The calculation is performed with disorder and also at finite temperature. In the absence of disorder and at zero temperature agreement is obtained with earlier results by D. Loss et.
Weisz, J. F. +2 more
openaire +4 more sources