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Anomalous Hall effect and persistent valley currents in graphene p-n junctions/

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dc.contributor.advisor Leonid S. Levitov. en_US
dc.contributor.author Samutpraphoot, Polnop en_US
dc.contributor.other Massachusetts Institute of Technology. Department of Physics. en_US
dc.date.accessioned 2015-01-05T20:06:24Z
dc.date.available 2015-01-05T20:06:24Z
dc.date.copyright 2014 en_US
dc.date.issued 2014 en_US
dc.identifier.uri http://hdl.handle.net/1721.1/92691
dc.description Thesis: S.B., Massachusetts Institute of Technology, Department of Physics, 2014. en_US
dc.description Cataloged from PDF version of thesis. en_US
dc.description Includes bibliographical references (pages 39-40). en_US
dc.description.abstract Dirac particles can exhibit Hall-like transport induced by Berry's gauge field in the absence of magnetic field. We develop a detailed picture of this unusual effect for charge carriers in graphene nanostructures. The Hall effect is nonzero in each valley but is of opposite signs in different valleys, giving rise to charge-neutral valley currents. Our analysis reveals that p-n junctions in graphene support persistent valley currents that remain nonzero in the system ground state (in thermodynamic equilibrium). The valley currents can be controlled via the bias and gate voltages, enabling a variety of potentially useful valley transport phenomena. en_US
dc.description.statementofresponsibility by Polnop Samutpraphoot. en_US
dc.format.extent 40 pages en_US
dc.language.iso eng en_US
dc.publisher Massachusetts Institute of Technology en_US
dc.rights M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. en_US
dc.rights.uri http://dspace.mit.edu/handle/1721.1/7582 en_US
dc.subject Physics. en_US
dc.title Anomalous Hall effect and persistent valley currents in graphene p-n junctions/ en_US
dc.type Thesis en_US
dc.description.degree S.B. en_US
dc.contributor.department Massachusetts Institute of Technology. Department of Physics. en_US
dc.identifier.oclc 898329165 en_US


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