Results 91 to 100 of about 220,627 (193)

A Macrocyclic Furan with Accessible Oxidation States: Switching Between Aromatic and Antiaromatic Global Ring Currents. [PDF]

Chemistry, 2022
Dishi O, Rahav Y, Carmieli R, Gidron O.
europepmc   +1 more source

nu=1/2 quantum Hall effect in the Aharonov-Casher geometry in a mesoscopic ring

, 1996
We study the effect of an electric charge in the middle of a ring of electrons in a magnetic field such as $\nu = 1/2$. In the absence of the central charge, a residual current should appear due to an Aharanov-Bohm effect.
%J. K. Jain, A. Lopez, A. Stern, B. Dou̧cot, B. I. Halperin, D. Mailly, D. R. Leadley, E. H. Rezayi, E. N. Bogachek, E. Rezayi, F. D. M. Haldane, G. Fano, M. Büttiker, M. S. Svirskii, N. W. Ashcroft, R. L. Willet, R. Morf, R. Mélin, R. R. Du, R. R. Du, R. Shankar, S. H. Simon, S. He, S. Olariu, V. J. Goldman, V. Kalmeyer, W. J. Elion, W. Kang, X. G. Wen, X. G. Wen, Y. Aharanov, Y. Aharonov, Y. B. Kim   +32 more
core   +1 more source

Polariton ring currents and circular dichroism of Mg-porphyrin in a chiral cavity. [PDF]

Chem Sci, 2022
Sun S, Gu B, Mukamel S.
europepmc   +1 more source

Magnetic flux locking in two weakly coupled superconducting rings

, 1998
We have analyzed the quantum interference effects in the macroscopic ''superconducting molecule''. The composite system consists of two massive superconducting rings, each interrupted by a Josephson junction, which are at the same time weakly coupled ...
A. N. Omelyanchuk, de Bruyn Ouboter R., de Bruyn Ouboter R., E. D. Vol, R. de Bruyn Ouboter, Vol E. D.   +5 more
core   +1 more source

Interpreting Aromaticity and Antiaromaticity through Bifurcation Analysis of the Induced Magnetic Field

ChemistryOpen, 2019
In all molecules, a current density is induced when the molecule is subjected to an external magnetic field. In turn, this current density creates a particular magnetic field.
Dr. Ricardo Pino‐Rios, Prof. Gloria Cárdenas‐Jirón, Prof. Lina Ruiz, Prof. William Tiznado   +3 more
doaj   +1 more source

Electronic states and persistent currents in nanowire quantum ring

, 2018
The new model of a quantum ring (QR) defined inside a nanowire (NW) is proposed. The one-particle Hamiltonian for electron in [111]-oriented NW QR is constructed taking into account both Rashba and Dresselhaus spin-orbit coupling (SOC). The energy levels
Kokurin, I. A.
core   +1 more source

Relationships between field-aligned currents and convection observed by EISCAT and implications concerning the mechanism that produces region-2 currents: Statistical study

Annales Geophysicae
Fluid theories explain the origin of region-2 field-aligned currents as the closure of the ring current, driven itself by the azimuthal pressure gradients generated in the magnetospheric ring plasma by the sunward convection.
Christophe Peymirat, Dominique Fontaine
doaj  

Research on Measures to Limit Short-Circuit Current by Changing the Structure of the Power Grid

Energies
This paper addresses the increasingly severe issue of excessive short-circuit currents brought about by the rapid development of large power grids. The working principles of structural changes in the grid as a means of limiting currents are studied, and ...
Shuqin Sun, Guanghao Zhou, Yunting Song, Xiaojun Tang, Yuguang Zhou, Zhenghai Yuan   +5 more
doaj   +1 more source

Comparisons of π-Electron Ring-Current and Bond-Current Patterns Calculated by Topological (‘HLPM’) and Ab Initio (‘Ipso-Centric’) Formalisms for Two Isomeric Conjugated Hydrocarbons, Corazulene and Cornaphthalene

Croatica Chemica Acta, 2015
The π-electron ring-currents and bond-currents associated with the isomeric structures corazulene (1) and cornaphthalene (2) are calculated by means of the rudimentary topological Hückel–London–Pople–McWeeny (HLPM) method (which is entirely equivalent to
T. K. Dickens, R. B. Mallion
doaj   +1 more source

Disclosure of Ground-State Zimmerman-Möbius Aromaticity in the Radical Anion of [6]Helicene and Evidence for 4π Periodic Aromatic Ring Currents in a Molecular "Metallic" Möbius Strip. [PDF]

Chemistry, 2021
Mauksch M, Tsogoeva SB.
europepmc   +1 more source