Results 61 to 70 of about 1,698,158 (202)

Persistent current of atoms in a ring optical lattice

, 2006
We consider a small ensemble of Bose atoms in a ring optical lattice with weak disorder. The atoms are assumed to be initially prepared in a superfluid state with non-zero quasimomentum and, hence, may carry matter current.
Kolovsky, Andrey R.
core   +1 more source

Multipoint MMS observations of fine‐scale SAPS structure in the inner magnetosphere

Geophysical Research Letters, 2016
We present detailed observations of dynamic, fine‐scale inner magnetosphere‐ionosphere coupling at ∼3.9 RE in the Region 2 Birkeland field‐aligned current (FAC). We find that observed electrodynamic spatial/temporal scales are primarily characteristic of
P. J. Erickson, H. Matsui, J. C. Foster, R. B. Torbert, R. E. Ergun, Yu. V. Khotyaintsev, P.‐A. Lindqvist, M. R. Argall, C. J. Farrugia, K. W. Paulson, R. J. Strangeway, W. Magnes   +11 more
doaj   +1 more source

Forecasting of SYMH and ASYH indices for geomagnetic storms of solar cycle 24 including St. Patrick’s day, 2015 storm using NARX neural network

Journal of Space Weather and Space Climate, 2019
Artificial Neural Network (ANN) has proven to be very successful in forecasting a variety of irregular magnetospheric/ionospheric processes like geomagnetic storms and substorms.
Bhaskar Ankush, Vichare Geeta
doaj   +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

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

A possibility of persistent voltage observation in a system of asymmetric superconducting rings

, 2012
A possibility to observe the persistent voltage in a superconducting ring of different widths of the arms is experimentally investigated. It was earlier found that switching of the arms between superconducting and normal states by ac current induces the ...
A.A. Burlakov, A.I. Ilin, A.V. Nikulov, Birge, Bleszynski-Jayich, Bluhm, Burlakov, Cheung, De Waele, Dubonos, Dubonos, Feynman, Gerber, Gurtovoi, Gurtovoi, Gurtovoi, Johnson, Koshnick, Kulik, Kulik, Levy, Little, Londergan, Nikulov, Nikulov, Nyquist, Riedel, Skocpol, Tucker, V.A. Tulin, V.L. Gurtovoi, von Oppen   +31 more
core   +1 more source

Modeling the influence of magnetospheric heat fluxes on the electron temperature in the subauroral ionosphere

Solar-Terrestrial Physics, 2017
We present results of modeling of the electron temperature distribution in the F region of the subauroral ionosphere for different helio-geomagnetic conditions with consideration for magnetospheric heat fluxes.
Gololobov A.Yu., Golikov I.A., Varlamov I.I.   +2 more
doaj   +1 more source

XOR gate response in a mesoscopic ring with embedded quantum dots

, 2009
We address XOR gate response in a mesoscopic ring threaded by a magnetic flux $\phi$. The ring, composed of identical quantum dots, is symmetrically attached to two semi-infinite one-dimensional metallic electrodes and two gate voltages, viz, $V_a$ and ...
Aviram, Baer, Baer, Chen, Cui, Dadosh, Datta, Mujica, Mujica, Nardelli, Newns, Nitzan, Nitzan, Orellana, Orellana, Reed, Santanu K. Maiti, Tagami, Walczak, Walczak, Walczak, Walter   +21 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

Zero-point fluctuations in the ground state of a mesoscopic normal ring

, 2000
We investigate the persistent current of a ring with an in-line quantum dot capacitively coupled to an external circuit. Of special interest is the magnitude of the persistent current as a function of the external impedance in the zero temperature limit ...
A. D. Zaikin, A. G. Huibers, A. J. Rimberg, A. O. Caldeira, A. Yacoby, A. Zawadowski, D. S. Golubev, D. S. Golubev, F. W. J. Hekking, H.-F. Cheung, H.-P. Eckle, I. L. Aleiner, I. L. Aleiner, K. Kang, L. Tian, M. Büttiker, M. Büttiker, M. Büttiker, M. Büttiker, M. Büttiker, M. Büttiker, M. Büttiker, M. Grifoni, M. Oshikawa, M. T. Liu, M. T. Liu, M. V. Moskalets, Markus Büttiker, P. A. Mello, P. Cedraschi, P. Cedraschi, P. Cedraschi, P. Mohanty, P. Mohanty, P. Sandstroem, Pascal Cedraschi, R. Deblock, R. Kotlyar, R. Landauer, T. Taniguchi, U. Gavish, U. Weiss, V. E. Kravtsov, Y. Imry, Ya. M. Blanter, Ya. M. Blanter   +45 more
core   +2 more sources