Results 51 to 60 of about 1,708,012 (159)

Persistent spin current in mesoscopic ferrimagnetic spin ring

, 2005
Using a semiclassical approach, we study the persistent magnetization current of a mesoscopic ferrimagnetic ring in a nonuniform magnetic field. At zero temperature, there exists persistent spin current because of the quantum fluctuation of magnons ...
A. Shapere, D. Awschalom, H. F. Cheung, Jing-Nuo Wu, M. V. Berry, Min-Fong Yang, Ming-Che Chang, S. Yamamoto   +7 more
core   +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, Awschalom D D, Bellucci S, Chang C H Mal’shukov A G Chao K A, Datta S, D’yakonov M I, Földi P, Földi P, Johnson M, Kelly M J, Knop M, Landau L D, Mal’shukov A G, Moroz A V, P Onorato, Popp M, Rashba E I, Rashba E I, S Bellucci, Thornton T J, Washburn S   +20 more
core   +1 more source

Residuals to the CHAOS‐6 Geomagnetic Field Model Caused by Magnetospheric Currents During Enhanced Magnetic Activity

Geochemistry, Geophysics, Geosystems, 2020
Thanks to mapping missions, like Ørsted, CHAMP, and Swarm, we have gained a detailed understanding of the geomagnetic field. High‐resolution models like POMME, GRIMM, or CHAOS are able to describe the main parts of the Earth's magnetic field reliably ...
Hermann Lühr, Yun‐Liang Zhou
doaj   +1 more source

NOR gate response in a double quantum ring: An exact result

, 2009
NOR gate response in a double quantum ring, where each ring is threaded by a magnetic flux $\phi$, is investigated. The double quantum ring is sandwiched symmetrically between two semi-infinite one-dimensional metallic electrodes and two gate voltages ...
Aviram, Baer, Baer, Chen, Cui, Dadosh, Datta, Földi, Mujica, Mujica, Nardelli, Newns, Nitzan, Nitzan, Orellana, Orellana, Reed, Santanu K. Maiti, Tagami, Walczak, Walczak, Walczak, Walter, Webb   +23 more
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Electron transport in a double quantum ring: Evidence of an AND gate [PDF]

, 2009
We explore AND gate response in a double quantum ring where each ring is threaded by a magnetic flux $\phi$. The double quantum ring is attached symmetrically to two semi-infinite one-dimensional metallic electrodes and two gate voltages, namely, $V_a ...
Aviram, Baer, Baer, Chen, Cui, Dadosh, Datta, Hod, Hod, Hod, Hod, Mujica, Mujica, Nardelli, Newns, Nitzan, Nitzan, Orellana, Orellana, Reed, Santanu K. Maiti, Tagami, Walczak, Walczak, Walczak, Walter   +25 more
core   +1 more source

Unsteady Dungey cycle from the point of view of Stokes’ theorem

Frontiers in Astronomy and Space Sciences
The Dungey cycle is considered from the formation of a magnetic barrier and necessary for dayside reconnection conditions till the electric field generation around the Birkeland current loop and magnetic flux circulation balance.
Vladimir S. Semenov, Igor V. Kubyshkin, Nikolai A. Tsyganenko, Nikolai V. Erkaev, Nikolai V. Erkaev, Marina V. Kubyshkina, Xiaogang Wang   +6 more
doaj   +1 more source

Geomagnetic response to solar and interplanetary disturbances

Journal of Space Weather and Space Climate, 2013
The space weather discipline involves different physical scenarios, which are characterised by very different physical conditions, ranging from the Sun to the terrestrial magnetosphere and ionosphere.
Saiz Elena, Cerrato Yolanda, Cid Consuelo, Dobrica Venera, Hejda Pavel, Nenovski Petko, Stauning Peter, Bochnicek Josef, Danov Dimitar, Demetrescu Crisan, Gonzalez Walter D., Maris Georgeta, Teodosiev Dimitar, Valach Fridich   +13 more
doaj   +1 more source

Anomalous magnetic response of a quasi-periodic mesoscopic ring in presence of Rashba and Dresselhaus spin-orbit interactions

, 2016
We investigate the properties of persistent charge current driven by magnetic flux in a quasi-periodic mesoscopic Fibonacci ring with Rashba and Dresselhaus spin-orbit interactions.
Maiti, Santanu K., Patra, Moumita
core   +1 more source

Pumping in a mesoscopic ring with Ahronov-Casher effect [PDF]

, 2006
We investigate parametric pumping of spin and charge currents in a mesoscopic ring interrupted by a tunnel barrier in presence of Aharonov-Casher (AC) effect and Aharonov-Bohm (AB) flux along the axis of the same ring.
Citro, R., Romeo, F.
core   +1 more source

Floquet states and persistent currents transitions in a mesoscopic ring

, 2002
We consider the effect of an oscillating potential on the single-particle spectrum and the time-averaged persistent current of a one-dimensional phase-coherent mesoscopic ring with a magnetic flux.
D. F. Martinez, D. Mailly, I. O. Kulik, J. B. Pieper, J. H. Shirley, L. P. Kouwenhoven, L. P. Levy, M. Büttiker, M. Büttiker, M. Büttiker, M. Büttiker, M. Moskalets, M. Moskalets, M. Switkes, M. V. Moskalets, M. Wagner, P. Cedraschi, P. K. Tien, P. W. Brouwer, R. H. Blick, R. Tsu, V. Chandrasekhar, Wenjun Li, Y. Aharonov   +23 more
core   +2 more sources