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Depósito Digital de Documentos de la UAB Encontrados 142 registros  inicioanterior114 - 123siguientefinal  ir al registro: La búsqueda tardó 0.01 segundos. 
114.
4 p, 865.5 KB Electric-field control of exchange bias in multiferroic epitaxial heterostructures / Laukhin, V. (Institut de Ciència de Materials de Barcelona) ; Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física) ; Martí Rovirosa, Xavier (Institut de Ciència de Materials de Barcelona) ; Hrabovsky, D. (Institut de Ciència de Materials de Barcelona) ; Sánchez Barrera, Florencio (Institut de Ciència de Materials de Barcelona) ; García-Cuenca Varona, María Victoria (Universitat de Barcelona. Departament de Física Aplicada i Òptica) ; Ferrater Martorell, Cèsar (Universitat de Barcelona. Departament de Física Aplicada i Òptica) ; Varela Fernández, Manuel, 1956- (Universitat de Barcelona. Departament de Física Aplicada i Òptica) ; Lüders, Ulrike Anne (LNMH ONERA-CNRS (Toulouse, França)) ; Bobo, Jean-François (LNMH ONERA-CNRS (Toulouse, França)) ; Fontcuberta, Josep (Institut de Ciència de Materials de Barcelona) ; American Physical Society
The magnetic exchange between epitaxial thin films of the multiferroic (antiferromagnetic and ferroelectric) hexagonal YMnO3 oxide and a soft ferromagnetic (FM) layer is used to couple the magnetic response of the FM layer to the magnetic state of the antiferromagnetic one. [...]
2006 - 10.1103/PhysRevLett.97.227201
Physical review letters, Vol. 97, Issue 22 (November 2006) , p. 227201  
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115.
4 p, 224.2 KB Effect of disorder on ultrafast exciton dynamics probed by single molecule spectroscopy / Hernando Campos, Jordi (Universitat Autònoma de Barcelona. Departament de Química) ; van Dijk, Erik M. H. P. (Institute for Nanotechnology (Enschede, Països Baixos)) ; Hoogenboom, Jacob P. (Institute for Nanotechnology (Enschede, Països Baixos)) ; García López, Juan José (Institute for Nanotechnology (Enschede, Països Baixos)) ; Reinhoudt, David N. (Institute for Nanotechnology (Enschede, Països Baixos)) ; Crego Calama, Mercedes (Institute for Nanotechnology (Enschede, Països Baixos)) ; García Parajó, María F.. (Institució Catalana de Recerca i Estudis Avançats) ; van Hulst, Niek F.. (Institut de Ciències Fotòniques)
We present a single-molecule study unraveling the effect of static disorder on the vibrational-assisted ultrafast exciton dynamics in multichromophoric systems. For every single complex, we probe the initial exciton relaxation process by an ultrafast pump-probe approach and the coupling to vibrational modes by emission spectra, while fluorescence lifetime analysis measures the amount of static disorder. [...]
2006 - 10.1103/PhysRevLett.97.216403
Physical review letters, Vol. 97, Issue 21 (November 2006) , p. 216403  
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116.
4 p, 160.5 KB Compatibility of cast search with axionlike interpretation of PVLAS results / Massó i Soler, Eduard, 1954- (Universitat Autònoma de Barcelona. Departament de Física) ; Redondo Martín, Javier (Universitat Autònoma de Barcelona. Departament de Física) ; American Physical Society
The PVLAS Collaboration has results that may be interpreted in terms of a light axionlike particle, while the CAST Collaboration has not found any signal of such particles. We propose a particle physics model with paraphotons and with a low energy scale in which this apparent inconsistency is circumvented.
2006 - 10.1103/PhysRevLett.97.151802
Physical review letters, Vol. 97, Issue 15 (October 2006) , p. 151802  
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117.
4 p, 1.1 MB Amorphization induced by pressure : results for zeolites and general implications / Peral Alonso, Inmaculada (Universitat Autònoma de Barcelona. Departament de Física) ; Iñiguez González, Jorge (Institut de Ciència de Materials de Barcelona) ; American Physical Society
We report an ab initio study of pressure-induced amorphization (PIA) in zeolites, which are model systems for this phenomenon. We confirm the occurrence of recently reported low-density amorphous phases that preserve the crystalline topology, and explain the role of the zeolite composition regarding PIA. [...]
2006 - 10.1103/PhysRevLett.97.225502
Physical review letters, Vol. 97, Issue 22 (November 2006) , p. 225502  
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118.
4 p, 962.7 KB Ferrodistortive instability at the (001) surface of half-metallic manganites / Pruneda, Miguel (University of California. Department of Physics) ; Ferrari, Valeria P. (University of Cambridge. Cavendish Laboratory) ; Rurali, Riccardo (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica) ; Littlewood, Peter (University of Cambridge. Cavendish Laboratory) ; Spaldin, Nicola A. (University of California. Materials Department) ; Artacho, Emilio (University of Cambridge. Department of Earth Sciences) ; American Physical Society
We present the structure of the fully relaxed (001) surface of the half-metallic manganite La0. 7Sr0. 3MnO3, calculated using density functional theory. Two relevant ferroelastic order parameters are identified and characterized. [...]
2007 - 10.1103/PhysRevLett.99.226101
Physical review letters, Vol. 99, Issue 22 (November 2007) , p. 226101  
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119.
4 p, 283.5 KB Scaling theory put into practice : first-principles modeling of transport in doped silicon nanowires / Markussen, Troels (Technical University of Denmark. Department of Micro- and Nanotechnology) ; Rurali, Riccardo (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica) ; Jauho, Antti-Pekka (Technical University of Denmark. Department of Micro- and Nanotechnology) ; Brandbyge, Mads (Technical University of Denmark. Department of Micro- and Nanotechnology) ; American Physical Society
We combine the ideas of scaling theory and universal conductance fluctuations with density-functional theory to analyze the conductance properties of doped silicon nanowires. Specifically, we study the crossover from ballistic to diffusive transport in boron or phosphorus doped Si nanowires by computing the mean free path, sample-averaged conductance ⟨G⟩, and sample-to-sample variations std(G) as a function of energy, doping density, wire length, and the radial dopant profile. [...]
2007 - 10.1103/PhysRevLett.99.076803
Physical review letters, Vol. 99, Issue 7 (August 2007) , p. 76803  
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120.
4 p, 443.3 KB Mechanical detection of carbon nanotube resonator vibrations / García Sánchez, Daniel (Centre d'Investigació en Nanociència i Nanotecnologia) ; San Paulo, Álvaro (Centro Nacional de Microelectrónica) ; Esplandiu Egido, Maria José (Centre d'Investigació en Nanociència i Nanotecnologia) ; Forró, László (EPFL (Lausanne, Suïssa)) ; Aguasca Solé, Alberto (Universitat Politècnica de Catalunya) ; Bachtold, Adrian (Centre d'Investigació en Nanociència i Nanotecnologia) ; American Physical Society
Bending-mode vibrations of carbon nanotube resonators were mechanically detected in air at atmospheric pressure by means of a novel scanning force microscopy method. The fundamental and higher order bending eigenmodes were imaged at up to 3. [...]
2007 - 10.1103/PhysRevLett.99.085501
Physical review letters, Vol. 99, Issue 8 (August 2007) , p. 85501  
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121.
4 p, 100.6 KB Discriminating states : the quantum Chernoff bound / Audenaert, K. M. R. (Imperial College London. Institute for Mathematical Sciences) ; Calsamiglia Costa, John (Universitat Autònoma de Barcelona. Departament de Física) ; Muñoz Tapia, Ramon (Universitat Autònoma de Barcelona. Departament de Física) ; Bagán Capella, Emili (Universitat Autònoma de Barcelona. Departament de Física) ; Masanes, Ll. (University of Cambridge. Department of Applied Mathematics and Theoretical Physics) ; Acín, Antonio (Institut de Ciències Fotòniques) ; Verstraete, F. (Universität Wien. Fakultät für Physik) ; American Physical Society
We consider the problem of discriminating two different quantum states in the setting of asymptotically many copies, and determine the minimal probability of error. This leads to the identification of the quantum Chernoff bound, thereby solving a long-standing open problem. [...]
2007 - 10.1103/PhysRevLett.98.160501
Physical review letters, Vol. 98, Issue 16 (April 2007) , p. 160501  
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122.
4 p, 202.8 KB Cavity cooling of internal molecular motion / Morigi, Giovanna (Universitat Autònoma de Barcelona. Departament de Física) ; Pinkse, Pepijn W. H. (Max-Planck-Institut für Quantenoptik) ; Kowalewski, Markus (Ludwig-Maximilians-Universität München) ; de Vivie-Riedle, Regina (Ludwig-Maximilians-Universität München) ; American Physical Society
We predict that it is possible to cool rotational, vibrational, and translational degrees of freedom of molecules by coupling a molecular dipole transition to an optical cavity. The dynamics is numerically simulated for a realistic set of experimental parameters using OH molecules. [...]
2007 - 10.1103/PhysRevLett.99.073001
Physical review letters, Vol. 99, Issue 7 (August 2007) , p. 73001  
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123.
4 p, 474.4 KB Non-Markovian model for transport and reactions of particles in spiny dendrites / Fedotov, Sergei (University of Manchester. Department of Mathematics) ; Méndez López, Vicenç (Universitat Autònoma de Barcelona. Departament de Física) ; American Physical Society
Motivated by the experiments [Santamaria et al. , Neuron 52, 635 (2006)] that indicated the possibility of subdiffusive transport of molecules along dendrites of cerebellar Purkinje cells, we develop a mesoscopic model for transport and chemical reactions of particles in spiny dendrites. [...]
2008 - 10.1103/PhysRevLett.101.218102
Physical review letters, Vol. 101, Issue 21 (November 2008) , p. 218102  
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Depósito Digital de Documentos de la UAB : Encontrados 142 registros   inicioanterior114 - 123siguientefinal  ir al registro:
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