Results overview: Found 7 records in 0.02 seconds.
Articles, 7 records found
Articles 7 records found  
1.
12 p, 2.3 MB Multiple quantum phases in graphene with enhanced spin-orbit coupling : from the quantum spin hall regime to the spin hall effect and a robust metallic state / Cresti, Alessandro (IMEP-LAHC) ; Dinh, Van Tuan (Universitat Autònoma de Barcelona. Departament de Física) ; Soriano, David (Institut Català de Nanociència i Nanotecnologia) ; Cummings, Aron (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
We report an intriguing transition from the quantum spin Hall phase to the spin Hall effect upon segregation of thallium adatoms adsorbed onto a graphene surface. Landauer-Büttiker and Kubo-Greenwood simulations are used to access both edge and bulk transport physics in disordered thallium-functionalized graphene systems of realistic sizes. [...]
2014 - 10.1103/PhysRevLett.113.246603
Physical review letters, Vol. 113, issue 24 (Dec. 2014) , art. 246603  
2.
14 p, 1.8 MB Towards microscopic control of the magnetic exchange coupling at the surface of a topological insulator / Rüssmann, Philipp (Peter Grünberg Institut) ; Mahatha, Sanjoy K. (Aarhus University. Department of Physics and Astronomy) ; Sessi, Paolo (Universität Würzburg) ; Valbuena, Miguel Ángel (Institut Català de Nanociència i Nanotecnologia) ; Bathon, Thomas (Universität Würzburg) ; Fauth, Kai (Universität Würzburg) ; Godey, Sylvie (Institut Català de Nanociència i Nanotecnologia) ; Mugarza, Aitor (Institut Català de Nanociència i Nanotecnologia) ; Kokh, Konstantin A. (Novosibirsk State University) ; Tereshchenko, Oleg E. (Novosibirsk State University) ; Gargiani, Pierluigi (ALBA Laboratori de Llum de Sincrotró) ; Valvidares, Manuel (ALBA Laboratori de Llum de Sincrotró) ; Jiménez, Erika (European Synchrotron Radiation Facility) ; Brookes, Nicholas B. (European Synchrotron Radiation Facility) ; Bode, Matthias (Universität Würzburg) ; Bihlmayer, Gustav (Peter Grünberg Institut) ; Blügel, Stefan (Peter Grünberg Institut) ; Mavropoulos, Phivos (Peter Grünberg Institut) ; Carbone, Carlo (Istituto di Struttura della Materia) ; Barla, Alessandro (Istituto di Struttura della Materia)
Magnetically doped topological insulators may produce novel states of electronic matter, where for instance the quantum anomalous Hall effect state can be realized. Pivotal to this goal is a microscopic control over the magnetic state, defined by the local electronic structure of the dopants and their interactions. [...]
2018 - 10.1088/2515-7639/aad02a
Journal of physics: Materials, Vol. 1, Núm. 1 (September 2018) , art. 015002  
3.
11 p, 1.9 MB Quantum Hall effect in graphene with interface-induced spin-orbit coupling / Cysne, Tarik P. (Universidade Federal Do Rio de Janeiro) ; Garcia, José H. (Institut Català de Nanociència i Nanotecnologia) ; Rocha, Alexandre Reily (Universidade Estadual Paulista (Brasil)) ; Rappoport, Tatiana G. (Universidade Federal Do Rio de Janeiro)
We consider an effective model for graphene with interface-induced spin-orbit coupling and calculate the quantum Hall effect in the low-energy limit. We perform a systematic analysis of the contribution of the different terms of the effective Hamiltonian to the quantum Hall effect (QHE). [...]
2018 - 10.1103/PhysRevB.97.085413
Physical review B, Vol. 97, Issue 8 (February 2018) , art. 85413  
4.
8 p, 761.1 KB Scale-invariant large nonlocality in polycrystalline graphene / Ribeiro, Mário (Nanogune) ; Power, Stephen R. (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Hueso, Luis E. (Nanogune) ; Casanova, Fèlix (Nanogune)
The observation of large nonlocal resistances near the Dirac point in graphene has been related to a variety of intrinsic Hall effects, where the spin or valley degrees of freedom are controlled by symmetry breaking mechanisms. [...]
2017 - 10.1038/s41467-017-02346-x
Nature communications, Vol. 8, issue 1 (Jan. 2017) , art. 2198  
5.
7 p, 4.6 MB Valley-polarized quantum transport generated by gauge fields in graphene / Settnes, Mikkel (Danmarks Tekniske Universitet. Department of Photonics Engineering) ; Garcia, José H. (Institut Català de Nanociència i Nanotecnologia) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia)
We report on the possibility to simultaneously generate in graphene a bulk valley-polarized dissipative transport and a quantum valley Hall effect by combining strain-induced gauge fields and real magnetic fields. [...]
2017 - 10.1088/2053-1583/aa7cbd
2D Materials, Vol. 4, issue 3 (September 2017) , art. 31006  
6.
32 p, 3.3 MB Twin-induced InSb nanosails : a convenient high mobility quantum system / De La Mata, Maria (Institut Catalá de Nanociència i Nanotecnologia) ; Leturcq, Renaud (Institut d'Electronique, de Microélectronique, et de Nanotechnologie) ; Plissard, Sébastien R. (Centre national de la recherche scientifique. Laboratoire d'analyse et d'architecture des systèmes) ; Rolland, Chloé (Institut d'Electronique, de Microélectronique, et de Nanotechnologie) ; Magén, César (Instituto de Nanociencia de Aragón) ; Arbiol i Cobos, Jordi (Institut Català de Nanociència i Nanotecnologia) ; Caroff, Philippe (Institut d'Electronique, de Microélectronique, et de Nanotechnologie)
Ultra narrow bandgap III-V semiconductor nanomaterials provide a unique platform for realizing advanced nanoelectronics, thermoelectrics, infrared photodetection, and quantum transport physics. In this work we employ molecular beam epitaxy to synthesize novel nanosheet-like InSb nanostructures exhibiting superior electronic performance. [...]
2016 - 10.1021/acs.nanolett.5b05125
Nano letters, Vol. 16, issue 2 (Oct. 2016) , p. 825-833  
7.
4 p, 611.3 KB Current-induced cleaning of graphene / Moser, Joel (Centre d'Investigació en Nanociència i Nanotecnologia (CIN2)) ; Barreiro Megino, Amelia (Centre d'Investigació en Nanociència i Nanotecnologia (CIN2)) ; Bachtold, Adrian (Centre d'Investigació en Nanociència i Nanotecnologia (CIN2)) ; American Physical Society
A simple yet highly reproducible method to suppress contamination of graphene at low temperature inside the cryostat is presented. The method consists of applying a current of several milliamperes through the graphene device, which is here typically a few microns wide. [...]
2007 - 10.1063/1.2789673
Applied physics letters, Vol. 91, Issue 16 (October 2007) , p. 163513/1-163513/3  

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