Results 11 to 20 of about 50,984 (192)

Anti-ferromagnetic ordering in arrays of superconducting pi-rings [PDF]

, 2005
We report experiments in which one dimensional (1D) and two dimensional (2D) arrays of YBa2Cu3O7-x-Nb pi-rings are cooled through the superconducting transition temperature of the Nb in various magnetic fields.
A. Mathai, A. Ramirez, Ariando, , C. C. Tsuei, H. Hilgenkamp, H. J. H. Smilde, J. R. Kirtley, K. Binder, L. N. Bulaevskii, R. J. Baxter, V. B. Geshkenbein, W. Lenz   +11 more
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Vertically coupled double quantum rings at zero magnetic field [PDF]

, 2006
Within local-spin-density functional theory, we have investigated the `dissociation' of few-electron circular vertical semiconductor double quantum ring artificial molecules at zero magnetic field as a function of inter-ring distance.
B. Jouault, E. Lipparini, F. Malet, J. I. Climente, J. Planelles, M. Barranco, M. Pi, M. Pi, M. Pi, O. Mayrock, O. Mayrock, R. Mayol, S. Lundqvist, T. Ihn, T. Ihn, W. G. van der Wiel   +15 more
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Graphene Rings in Magnetic Fields: Aharonov-Bohm Effect and Valley Splitting [PDF]

, 2009
We study the conductance of mesoscopic graphene rings in the presence of a perpendicular magnetic field by means of numerical calculations based on a tight-binding model.
H U Baranger, J Wurm, K Richter, M Wimmer, Messiah A, Molitor F Huefner M Jacobsen A Pioda A Stampfer C Ensslin K Ihn T, Rycerz A, Rycerz A, Wimmer M Richter K   +8 more
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Parity-Affected Persistent Currents in Superconducting Nanorings [PDF]

, 2005
We argue that at sufficiently low temperatures T superconducting parity effect may strongly influence equilibrium persistent currents (PC) in isolated superconducting nanorings containing a weak link with few conducting modes.
Sharov, Sergei V., Zaikin, Andrei D.
core   +3 more sources

Breakdown of the mirror image symmetry in the optical absorption/emission spectra of oligo(para-phenylene)s [PDF]

, 2005
The absorption and emission spectra of most luminescent, pi-conjugated, organic molecules are the mirror image of each other. In some cases, however, this symmetry is severely broken.
Andrew C. Grimsdale, David Beljonne, Egbert Zojer, Emil J. W. List, Georg Heimel, Grimme J., Jean-Luc Brédas, Johannes Gierschner, Klaus Müllen, Maria Daghofer   +9 more
core   +3 more sources

Leader Election in Anonymous Rings: Franklin Goes Probabilistic [PDF]

, 2008
We present a probabilistic leader election algorithm for anonymous, bidirectional, asynchronous rings. It is based on an algorithm from Franklin, augmented with random identity selection, hop counters to detect identity clashes, and round numbers modulo ...
A. Itai, D. Dolev, E. Chang, E. Dijkstra, G. Peterson, H. Kakugawa, J. Beauquier, J. Burns, J.-F. Groote, J.F. Groote, R. Franklin, R. Tarjan, R.van Glabbeek, S. Maharaj, S.-T. Huang, T. Herman, W. Fokkink   +16 more
core   +7 more sources

Observation of strong final-state effects in pi+ production in pp collisions at 400 MeV

, 1998
Differential cross sections of the reactions $pp \to d\pi^+$ and $pp \to pn\pi^+$ have been measured at $T_p = 400$ MeV by detecting the charged ejectiles in the angular range $4^0 \leq \Theta_{Lab} \leq 21^\circ$.
A Betsch, A Johansson, A Kupść, A Mörtsell, A Sukhanov, A Turowiecki, A Zernov, B Höistad, B Morosov, Bannwarth, Bondar, Boudard, Brückmann, C Ekström, Calen, Falk, Flammang, G Kurz, G.J Wagner, H Calén, H Clement, Hardie, J Dyring, J Johanson, J Pätzold, J Stepaniak, J Zabierowski, J Złomańczuk, K Fransson, K Kilian, L Gustafsson, M.G Schepkin, P Marciniewski, R Bilger, R.J.M.Y Ruber, Rappenecker, S Häggström, S Kullander, Schepkin, T Johansson, W Brodowski, W Oelert, Z Wilhelmi   +42 more
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A prime ideal principle for two-sided ideals

, 2016
Many classical ring-theoretic results state that an ideal that is maximal with respect to satisfying a special property must be prime. We present a "Prime Ideal Principle" that gives a uniform method of proving such facts, generalizing the Prime Ideal ...
Reyes, Manuel L.
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Nitrogen-Functionalized Graphene Nanoflakes (GNFs:N): Tunable Photoluminescence and Electronic Structures

, 2012
This study investigates the strong photoluminescence (PL) and X-ray excited optical luminescence observed in nitrogen-functionalized 2D graphene nanoflakes (GNFs:N), which arise from the significantly enhanced density of states in the region of {\pi ...
A. Ganguly, A. Kumar, B. Y. Wang, C. H. Chuang, C. W. Chen, C. W. Pao, Cancado L. G., Carlisle J. A., Chien C.-T., Chiou J. W., Cuong T. V., Eda G., Elias D. C., Ferrari A. C., Gan Z. X., Geim A. K., Geng D., Gokus T., H. M. Tsai, H. Yamane, H.-J. Lin, Haberer D., Han M. Y., J. W. Chiou, Jeong H.-K., K.-H. Chen, L. Liu, L.-C. Chen, Li X., Liu L., Lui C. H., Luo Z. T., M.-H. Tsai, Mattevi C., N. Kosugi, Novoselov K. S., P. Papakonstantinou, Pacilé D, Pao C. W., Pao C. W., Park S., Ponomarenko L. A., Ray S. C., Ray S. C., Ray S. C., Robertson J., Ronning C., S. C. Chen, S. I. Peng, Sekhar C. Ray, Sham T. K., Skytt P., Sun C. L., T. K. Sham, T. Regier, Tian J., Usachov D., van Veenendaal M., W. F. Pong, Wang Y., Ward M. J., Wei D., Wen J., Y. C. Shao, Y. C. Yeh, Y. F. Wang, Yan J.-A., Yan J.-A., Zhou J. G.   +68 more
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Rydberg rings [PDF]

, 2010
Atoms in highly excited Rydberg states exhibit remarkable properties and constitute a powerful tool for studying quantum phenomena in strongly interacting many-particle systems.
Lesanovsky, Igor, Olmos, Beatriz
core   +1 more source