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The ring current model of the pentaprismane molecule
Journal of Computational Chemistry, 2011AbstractThree‐dimensional models of the quantum‐mechanical current density JB, induced in the electron cloud of the C10H10 pentaprismane molecule by a magnetic field B applied along the C5 (a C2) symmetry axis, orthogonal to the pentagonal (a rectangular) face, and denoted by B‖ (B⟂), have been constructed.
Stefano Pelloni +3 more
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A diatropic ring current in a fluorofullerene trannulene
Chemical Communications, 2003Ipsocentric current-density maps for a fluorofullerene derivative, C60F15H3, modelling the addition pattern of the experimentally characterised C60F15[CBr(CO2Et)2]3 which contains an [18]trans-annulene system, reveal a diamagnetic ring current dominated by the contribution of the four HOMO electrons, as in a classical (4n + 2) aromatic annulene.
Burley G. A. +4 more
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Current status of contraceptive vaginal rings
Contraception, 2013Contraceptive vaginal rings (CVR) offer a new, effective contraceptive option, expanding the available choices of hormonal contraception. Various ring prototypes have been evaluated: progestin-only rings and combined progestin-estrogen rings, as well as different combination of progestins and estrogens.
Vivian, Brache +2 more
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Mesoscopic persistent current in small rings
Physical Review B, 1993Small normal-metal rings threaded by a constant magnetic flux have been shown to carry a mesoscopic persistent current at low temperatures. The current is a few-electron effect and its sign and amplitude depend on the microscopic configuration of disorder. Assuming a Gaussian current distribution, we characterize the effect by three quantities, the rms
, Riedel, , von Oppen F
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Josephson current oscillation in a Rashba ring
Journal of Physics: Condensed Matter, 2009We propose to use Rashba spin-orbital coupling (RSOC) to modulate the Josephson current in a one-dimensional ring-SQUID (superconducting quantum interference device) without any magnetic field or magnetic material. Supercurrent oscillation due to spin-dependent quantum interference of spin wavefunctions passing through the two arms of the ring in the ...
J, Wang, K S, Chan
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Journal of Geophysical Research, 1964
Several people have computed numerically the magnetic field caused by an axially symmetric body of plasma imbedded in a dipole magnetic field. In the present paper we derive an approximate formula for this magnetic field, without first choosing a particular functional form for the plasma density.
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Several people have computed numerically the magnetic field caused by an axially symmetric body of plasma imbedded in a dipole magnetic field. In the present paper we derive an approximate formula for this magnetic field, without first choosing a particular functional form for the plasma density.
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Plasmasphere and its interaction with the ring current
Space Science Reviews, 1983In the last few years (after 1976) new instruments have been used for plasmaspheric studies (‘mutual-impedance’ probe, ion energy-mass spectrometers) which have led to new results. The existence in the plasmasphere of previously unknown ions (He2+, O2+) was revealed and the pitch-angle distributions of ions with energies 10–20 eY were measured.
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Dynamic persistent currents in mesoscopic rings
Physical Review Letters, 1991A dynamic current I w in a mesoscopic ring subjected to a time-dependent external magnetic field H~(t)=H 0 +H w cos(ωt) is calculated in the limit of small Hω using linear-response theory and the supersymmetry method. It is shown that the current Iω remains finite in the limit ω→0 and exceeds currents obtained from thermodynamic considerations. It can
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Ring-current effect of the phthalocyanine ring
Journal of the American Chemical Society, 1969Thomas R. Janson +4 more
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A ring current model for the heme ring
Journal of Magnetic Resonance (1969), 1981openaire +1 more source