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Dipòsit Digital de Documents de la UAB 23 registres trobats  anterior11 - 20següent  anar al registre: La cerca s'ha fet en 0.03 segons. 
11.
23 p, 2.2 MB Nanomechanics of flexoelectric switching / Očenášek, Jan (University of West Bohemia in Pilsen) ; Lu, Haidong (University of Nebraska-Lincoln. Department of Physics and Astronomy) ; Bark, C. W. (University of Wisconsin-Madison. Department of Materials Science and Engineering) ; Eom, C. B. (University of Wisconsin-Madison. Department of Materials Science and Engineering) ; Alcalá, Jorge (Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica) ; Catalan, Gustau (Institut Català de Nanociència i Nanotecnologia) ; Gruverman, A. (University of Nebraska-Lincoln. Department of Physics and Astronomy)
We examine the phenomenon of flexoelectric switching of polarization in ultrathin films of barium titanate induced by a tip of an atomic force microscope (AFM). The spatial distribution of the tip-induced flexoelectricity is computationally modeled both for perpendicular mechanical load (point measurements) and for sliding load (scanning measurements), and compared with experiments. [...]
2015 - 10.1103/PhysRevB.92.035417
Physical review B : Condensed matter and materials physics, Vol. 92, Issue 3 (July 2015) , art. 035417  
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12.
23 p, 540.5 KB Reconstructing phonon mean-free-path contributions to thermal conductivity using nanoscale membranes / Cuffe, John (Massachusetts Institute of Technology. Department of Mechanical Engineering) ; Eliason, Jeffrey Kristian (Massachusetts Institute of Technology. Department of Chemistry) ; Maznev, Alex A. (Massachusetts Institute of Technology. Department of Chemistry) ; Collins, Kimberlee C. (Massachusetts Institute of Technology. Department of Mechanical Engineering) ; Johnson, Jeremiah A. (Massachusetts Institute of Technology. Department of Mechanical Engineering) ; Shchepetov, Andrey (VTT Technical Research Centre of Finland) ; Prunnila, Mika (VTT Technical Research Centre of Finland) ; Ahopelto, Jouni (VTT Technical Research Centre of Finland) ; Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia) ; Chen, Gang (Massachusetts Institute of Technology. Department of Mechanical Engineering) ; Nelson, Keith A. (Massachusetts Institute of Technology. Department of Chemistry)
Knowledge of the mean-free-path distribution of heat-carrying phonons is key to understanding phonon-mediated thermal transport. We demonstrate that thermal conductivity measurements of thin membranes spanning a wide thickness range can be used to characterize how bulk thermal conductivity is distributed over phonon mean free paths. [...]
2015 - 10.1103/PhysRevB.91.245423
Physical review B : Condensed matter and materials physics, Vol. 91, Issue 24 (June 2015) , art. 245423  
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13.
7 p, 503.0 KB Efficient linear scaling approach for computing the Kubo Hall conductivity / Ortmann, Frank (Technische Universität Dresden) ; Leconte, Nicolas (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
We report an order-N approach to compute the Kubo Hall conductivity for disorderd two-dimensional systems reaching tens of millions of orbitals, and realistic values of the applied external magnetic fields (as low as a few Tesla). [...]
2015 - 10.1103/PhysRevB.91.165117
Physical review B : Condensed matter and materials physics, Vol. 91, issue 16 (April 2015) , art. 165117  
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14.
8 p, 2.1 MB Long-lived excitons in GaN/AlN nanowire heterostructures / Beeler, Mark (Commissariat à l'Énergie Atomique et aux Énergies Alternatives (França)) ; Lim, Caroline B. (Commissariat à l'Énergie Atomique et aux Énergies Alternatives (França)) ; Hille, Pascal (Justus Liebig-Universität Gießen. Physikalisches Institut) ; Bleuse, Joel (Commissariat à l'Énergie Atomique et aux Énergies Alternatives (França)) ; Schörmann, Jörg (I. Physikalisches Institut, Justus-Liebig-Universität Gießen) ; De La Mata, Maria (Institut de Ciència de Materials de Barcelona) ; Arbiol i Cobos, Jordi (Institut Català de Nanociència i Nanotecnologia) ; Eickhoff, Martin (I. Physikalisches Institut, Justus-Liebig-Universität Gießen) ; Monroy, Eva (Commissariat à l'Énergie Atomique et aux Énergies Alternatives (França))
GaN/AlN nanowire heterostructures can display photoluminescence (PL) decay times on the order of microseconds that persist up to room temperature. Doping the GaN nanodisk insertions with Ge can reduce these PL decay times by two orders of magnitude. [...]
2015 - 10.1103/PhysRevB.91.205440
Physical review B : Condensed matter and materials physics, Vol. 91, issue 20 (May 2015) , art. 205440  
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15.
9 p, 1.7 MB Spin density wave and superconducting properties of nanoparticle organic conductor assemblies / Winter, Laurel E. (Florida State University. Department of Physics) ; Steven, Eden (Florida State University. Department of Physics) ; Brooks, James S. (Florida State University. Department of Physics) ; Benjamin, Shermane (Florida State University. Department of Physics) ; Park, Ju-Hyun. (Florida State University. National High Magnetic Field Laboratory) ; De Caro, Dominique (Centre national de la recherche scientifique (França). Laboratoire de Chimie de Coordination) ; Faulmann, Christophe (Centre national de la recherche scientifique (França). Laboratoire de Chimie de Coordination) ; Valade, Lydie (Centre national de la recherche scientifique (França). Laboratoire de Chimie de Coordination) ; Jacob, Kane (Centre national de la recherche scientifique (França). Laboratoire de Chimie de Coordination) ; Chtioui, Imane (Centre national de la recherche scientifique (França). Laboratoire de Chimie de Coordination) ; Ballesteros, Belén (Institut Català de Nanociència i Nanotecnologia) ; Fraxedas, Jordi (Institut Català de Nanociència i Nanotecnologia)
The magnetic susceptibilities of nanoparticle assemblies of two Bechgaard salts (TMTSF)2PF6 and (TMTSF)2ClO4, have been studied vs temperature and magnetic field. In the bulk these materials exhibit a spin density wave formation (TSDW=12K) and superconductivity (Tc=1. [...]
2015 - 10.1103/PhysRevB.91.035437
Physical review B : Condensed matter and materials physics, Vol. 91, issue 3 (Jan. 2015) , art. 35437  
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16.
14 p, 2.3 MB Velocity renormalization and Dirac cone multiplication ind graphene superlattices with various barrier-edge geometries / De Jamblinne de Meux, Albert (Université Catholique de Louvain. Institute of Condensed Matter and Nanosciences) ; Leconte, Nicolas (Institut Català de Nanociència i Nanotecnologia) ; Charlier, Jean Christophe (Université Catholique de Louvain. Institute of Condensed Matter and Nanosciences) ; Lherbier, Aurélien (Université Catholique de Louvain. Institute of Condensed Matter and Nanosciences)
The electronic properties of one-dimensional graphene superlattices strongly depend on the atomic size and orientation of the 1D external periodic potential. Using a tight-binding approach, we show that the armchair and zigzag directions in these superlattices have a different impact on the renormalization of the anisotropic velocity of the charge carriers. [...]
2015 - 10.1103/PhysRevB.91.235139
Physical review B : Condensed matter and materials physics, Vol. 91, issue 23 (2015) , art. 235139  
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17.
11 p, 2.2 MB Negative permeability in magnetostatics and its experimental demonstration / Mach-Batlle, Rosa (Universitat Autònoma de Barcelona. Departament de Física) ; Parra, Albert (Universitat Autònoma de Barcelona. Departament de Física) ; Prat Camps, Jordi (Austrian Academy of Sciences. Institute for Quantum Optics and Quantum Information) ; Laut, Sergi (Universitat Autònoma de Barcelona. Departament de Física) ; Navau Ros, Carles (Universitat Autònoma de Barcelona. Departament de Física) ; Sánchez Moreno, Álvaro (Universitat Autònoma de Barcelona. Departament de Física)
The control of magnetic fields, essential for our science and technology, is currently achieved by magnetic materials with positive permeability, including ferromagnetic, paramagnetic, and diamagnetic types. [...]
2017 - 10.1103/PhysRevB.96.094422
Physical review B : condensed matter and materials physics, Vol. 96, Issue 9 (Set. 2017) , art. 094422  
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18.
8 p, 783.4 KB Phonon and magnon scattering of antiferromagnetic Bi2Fe4O9 / Iliev, M. N. (University of Houston. Texas Center for Superconductivity) ; Litvinchuk, A. P. (University of Houston. Texas Center for Superconductivity) ; Hadjiev, V. G. (University of Houston. Texas Center for Superconductivity) ; Gospodinov, M. (Institut po fizika na tvŭrdoto ti︠a︡lo (Bŭlgarska akademii︠a︡ na naukite)) ; Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física) ; Ressouche, Eric (Commissariat à l'Énergie Atomique et aux Énergies Alternatives (França))
The phonon structure of antiferromagnetic Bi2Fe4O9 (space group Pbnm No. 55, TN≈240  K) was studied theoretically by calculations of lattice dynamics and experimentally between 10 and 300 K by polarized Raman spectroscopy. [...]
2010 - 10.1103/PhysRevB.81.024302
Physical review B : condensed matter and materials physics, Vol. 81, N. 2 (Jan. 2010) , p. 24302  
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19.
5 p, 402.4 KB Magnetoelastic coupling in La2/3Sr1/3MnO3 thin films on SrTiO3 / Pesquera, David (Institut de Ciència de Materials de Barcelona) ; Skumryev, Vassil (Universitat Autònoma de Barcelona. Departament de Física) ; Sánchez Barrera, Florencio (Institut de Ciència de Materials de Barcelona) ; Herranz Casabona, Gervasi (Institut de Ciència de Materials de Barcelona) ; Fontcuberta, Josep (Institut de Ciència de Materials de Barcelona)
Clamping of epitaxial La2/3Sr1/3MnO3 (LSMO) magnetic thin films on SrTiO3 (STO) substrates is shown to promote a clear modification of their magnetic properties at the STO cubic-tetragonal transition. [...]
2011 - 10.1103/PhysRevB.84.184412
Physical review B : condensed matter and materials physics, Vol. 84, Núm. 18 (Nov. 2011) , p. 184412/1-184412/5  
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20.
9 p, 2.3 MB Probing vertically graded anisotropy in FePtCu films / Dumas, Randy K. (University of Gothenburg. Department of Physic) ; Fang, Yeyu (Kungl. Tekniska högskolann. Materialfysik) ; Kirby, Brian (Brian J.) (NIST Center for Neutron Research) ; Zha, Chaolin (Kungl. Tekniska högskolann. Materialfysik) ; Bonanni, Valentina (Kungl. Tekniska högskolann. Materialfysik) ; Nogués, Josep (Institut Català de Nanociència i Nanotecnologia) ; Aakerman, Johan (Kungl. Tekniska högskolann. Materialfysik)
Field-dependent polarized neutron reflectivity (PNR) and magnetometry are employed to study the magnetic properties of compositionally uniform and graded FePtCu films as a function of annealing temperature (TA). [...]
2011 - 10.1103/PhysRevB.84.054434
Physical review B : condensed matter and materials physics, Vol. 84, N. 5 (Aug. 2011) , p. 054434/1-054434/9  
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