CINECA IRIS Institutional Research Information System
IRIS è la soluzione IT che facilita la raccolta e la gestione dei dati relativi alle attività e ai prodotti della ricerca. Fornisce a ricercatori, amministratori e valutatori gli strumenti per monitorare i risultati della ricerca, aumentarne la visibilità e allocare in modo efficace le risorse disponibili.
EnglishWe studied weak localization (WL) and antilocalization (WAL) in graphene at temperatures between 0.3 K and 15 K. At low carrier density, we observed a transition fromWL toWAL driven by the increasing of the magnetic field while at high carrier density, WAL was suppressed as a consequence of trigonal warping of the conical energy bands.We analyzed the magnetic-field-driven WL-WAL transition, evaluating the relative strengths of the various elastic-scattering mechanisms and estimating the decoherence lengths and rates as a function of temperature, using an alternative method with respect to previously reported studies. We relate the small values of lφ here reported, confirmed by a complementary analysis of universal conductance fluctuations, to an effective breaking of time-reversal symmetry due to the slowly varying disorder of the long-range type.
Scheda prodotto non validato
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo
| Titolo: | Quantum interference corrections to magnetoconductivity in graphene | |
| Autori: | ||
| Data di pubblicazione: | 2012 | |
| Rivista: | ||
| Abstract: | We studied weak localization (WL) and antilocalization (WAL) in graphene at temperatures between 0.3 K and 15 K. At low carrier density, we observed a transition fromWL toWAL driven by the increasing of the magnetic field while at high carrier density, WAL was suppressed as a consequence of trigonal warping of the conical energy bands.We analyzed the magnetic-field-driven WL-WAL transition, evaluating the relative strengths of the various elastic-scattering mechanisms and estimating the decoherence lengths and rates as a function of temperature, using an alternative method with respect to previously reported studies. We relate the small values of lφ here reported, confirmed by a complementary analysis of universal conductance fluctuations, to an effective breaking of time-reversal symmetry due to the slowly varying disorder of the long-range type. | |
| Handle: | http://hdl.handle.net/11571/430965 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
http://hdl.handle.net/11571/430965
Copyright © 2022