Dipòsit Digital de Documents de la UAB 21 registres trobats  1 - 10següentfinal  anar al registre: La cerca s'ha fet en 0.02 segons. 
1.
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, Vol. 91, issue 16 (April 2015) , art. 165117  
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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, J. (I. Physikalisches Institut, Justus-Liebig-Universität Gießen) ; De La Mata, Maria (Institut de Ciència dels Materials de Barcelona) ; Arbiol i Cobos, Jordi (Institut Català de Nanociència i Nanotecnologia) ; Eickhoff, M. (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, Vol. 91, issue 20 (May 2015) , art. 205440  
3.
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. Laboratoire de Chimie de Coordination) ; Faulmann, Christophe (Centre national de la recherche scientifique. Laboratoire de Chimie de Coordination) ; Valade, Lydie (Centre national de la recherche scientifique. Laboratoire de Chimie de Coordination) ; Jacob, Kane (Centre national de la recherche scientifique. Laboratoire de Chimie de Coordination) ; Chtioui, Imane (Centre national de la recherche scientifique. Laboratoire de Chimie de Coordination) ; Ballesteros Pérez, Belén (Institut Català de Nanociència i Nanotecnologia) ; Fraxedas i Calduch, 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, Vol. 91, issue 3 (Jan. 2015) , art. 35437  
4.
7 p, 3.1 MB Noncontact atomic force microscopy and density functional theory studies of the (2×2) reconstructions of the polar AlN(0001) surface / Chaumeton, F. Centre d’Élaboration de Matériaux et d’Etudes Structurales ; Robles, Roberto (Institut Català de Nanociència i Nanotecnologia) ; Pruneda, Miguel (Institut Català de Nanociència i Nanotecnologia) ; Lorente Palacios, Nicolás (Institut Català de Nanociència i Nanotecnologia) ; Eydoux, Benoit (Centre d’Élaboration de Matériaux et d’Etudes Structurales) ; Bouju, Xavier (Centre d’Élaboration de Matériaux et d’Etudes Structurales) ; Gauthier, Sébastien (Centre d’Élaboration de Matériaux et d’Etudes Structurales) ; Martrou, David (Centre d’Élaboration de Matériaux et d’Etudes Structurales)
Combined experimental and theoretical studies permit us to determine new protocols for growing by molecular beam epitaxy the technologically interesting N-rich aluminum nitride (AlN) surfaces. This is achieved by dosing the precursor gases at unusually low rates. [...]
2016 - 10.1103/PhysRevB.94.165305
Physical review B, Vol. 94, issue 16 (Oct. 2016) , art. 165305  
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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, Vol. 91, issue 23 (2015) , art. 235139  
6.
11 p, 9.8 MB Ab initio study of electron-phonon coupling in rubrene / Ordejón Rontomé, Pablo (Institut Català de Nanociència i Nanotecnologia) ; Boskovic, Desanka (Institut Català de Nanociència i Nanotecnologia) ; Panhans, Michel (Technische Universität Dresden) ; Ortmann, Frank (Technische Universität Dresden)
The use of ab initio methods for accurate simulations of electronic, phononic, and electron-phonon properties of molecular materials such as organic crystals is a challenge that is often tackled stepwise based on molecular properties calculated in gas phase and perturbatively treated parameters relevant for solid phases. [...]
2017 - 10.1103/PhysRevB.96.035202
Physical Review B, Vol. 96, Núm. 3 (July 2017) , art. 035202  
7.
6 p, 1.1 MB Unconventional features in the quantum Hall regime of disordered graphene : Percolating impurity states and Hall conductance quantization / Leconte, Nicolas (Institut Català de Nanociència i Nanotecnologia) ; Ortmann, Frank (Technische Universität Dresden) ; Cresti, Alessandro (Université Grenoble Alpes) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
We report on the formation of critical states in disordered graphene, at the origin of variable and unconventional transport properties in the quantum Hall regime, such as a zero-energy Hall conductance plateau in the absence of an energy band gap and Landau-level degeneracy breaking. [...]
2016 - 10.1103/PhysRevB.93.115404
Physical Review B, Vol. 93, Núm. 11 (March 2016) , p. 115404  
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12 p, 491.8 KB Anomalous ballistic transport in disordered bilayer graphene : A Dirac semimetal induced by dimer vacancies / Dinh, Van Tuan (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
We report anomalous quantum transport features in bilayer graphene in the presence of a random distribution of structural vacancies. By using an efficient real-space Kubo-Greenwood transport methodology, the impact of a varying density of dimer versus nondimer vacancies is investigated in very large scale disordered models. [...]
2016 - 10.1103/PhysRevB.93.041403
Physical Review B, Vol. 93, Isuue 4 (January 2016) , p. 041403(R)  
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12 p, 309.1 KB Spin dynamics in bilayer graphene : Role of electron-hole puddles and Dyakonov-Perel mechanism / Dinh, Van Tuan (Institut Català de Nanociència i Nanotecnologia) ; Adam, Shaffique (National University of Singapore. Centre for Advanced 2D Materials) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
We report on spin transport features which are unique to high quality bilayer graphene, in the absence of magnetic contaminants and strong intervalley mixing. The time-dependent spin polarization of a propagating wave packet is computed using an efficient quantum transport method. [...]
2016 - 10.1103/PhysRevB.94.041405
Physical Review B, Vol. 94, Issue 4 (July 2016) , p. 41405  
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10 p, 1.6 MB Structural and magnetic properties of FeMnₓ chains (x=1-6) supported on Cu₂ N/Cu (100) / Choi, Deung-Jang (CIC Nano GUNE (Sant Sebastià, País Basc)) ; Robles, Rodríguez, Roberto (Institut Català de Nanociència i Nanotecnologia) ; Gauyacq, Jean-Pierre (Université Paris-Saclay. Institut des Sciences Moléculaires d'Orsay) ; Ternes, Markus (Max Planck Institute for Solid State Research) ; Loth, Sebastian (Max Planck Institute for the Structure and Dynamics of Matter) ; Lorente, Nicolás. (Donostia International Physics Center)
Heterogeneous atomic magnetic chains are built by atom manipulation on a Cu₂N/Cu (100) substrate. Their magnetic properties are studied and rationalized by a combined scanning tunneling microscopy (STM) and density functional theory (DFT) work completed by model Hamiltonian studies. [...]
2016 - 10.1103/PhysRevB.94.085406
Physical Review B, Vol. 94, Issue 8 (August 2016) , art. 85406  

Dipòsit Digital de Documents de la UAB : 21 registres trobats   1 - 10següentfinal  anar al registre:
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