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dc.contributor.authorRosenstein, B.en_US
dc.contributor.authorLewkowicz, M.en_US
dc.contributor.authorKao, H. C.en_US
dc.contributor.authorKorniyenko, Y.en_US
dc.date.accessioned2019-04-03T06:38:07Z-
dc.date.available2019-04-03T06:38:07Z-
dc.date.issued2010-01-15en_US
dc.identifier.issn1098-0121en_US
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevB.81.041416en_US
dc.identifier.urihttp://hdl.handle.net/11536/5961-
dc.description.abstractThe process of coherent creation of particle-hole excitations by an electric field in graphene is quantitatively described beyond linear response. We calculate the evolution of current density, number of pairs and energy in ballistic regime for electric field E using the tight-binding model. While for ballistic flight times smaller than t(nl)proportional to E(-1/2) current is linear in E and independent of time, for larger ballistic times the current increases after t(nl) as J proportional to E(3/2)t and finally at yet larger times (t > t(B) proportional to E(-1)) Bloch oscillations set in. It is shown that the number of pairs follows the 2D generalization of the Schwinger's creation rate n proportional to E(3/2) only on certain time segments with a prefactor different from that obtained using the asymptotic formula.en_US
dc.language.isoen_USen_US
dc.titleBallistic transport in graphene beyond linear responseen_US
dc.typeArticleen_US
dc.identifier.doi10.1103/PhysRevB.81.041416en_US
dc.identifier.journalPHYSICAL REVIEW Ben_US
dc.citation.volume81en_US
dc.citation.issue4en_US
dc.citation.spage0en_US
dc.citation.epage0en_US
dc.contributor.department電子物理學系zh_TW
dc.contributor.departmentDepartment of Electrophysicsen_US
dc.identifier.wosnumberWOS:000277186000003en_US
dc.citation.woscount38en_US
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