当前位置： 文档下载 > 所有分类 > 外语学习 > 英语学习 > Coherent tunnelling through two quantum dots with Coulomb interaction当前位置： 文档下载 > 所有分类 > 外语学习 > 英语学习 > Coherent tunnelling through two quantum dots with Coulomb interactionThe coherent conductance and current is calculated through two quantum dots using the Hubbard model for a single level per spin. The occurrence of negative differential conductance is demonstrated. The Ohmic conductance is calculated for dots with equally
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991 naJ 13 1v5511069/tam-dnco:viXraCoherenttunnellingthroughtwoquantumdotswithCoulomb
interaction
P.PalsandA.MacKinnon
TheBlackettLaboratory,ImperialCollege,LondonSW72BZ,UnitedKingdom
Abstract
ThecoherentconductanceandcurrentiscalculatedthroughtwoquantumdotsusingtheHubbardmodelforasinglelevelperspin.Theoccurrenceofnegativedi erentialconductanceisdemonstrated.TheOhmicconductanceiscalculatedfordotswithequallyspacedlevels.Transportisdeterminedbymatchingenergylevels,evenwhentheydonotoccuratthechargedegeneracypoints.
34.80.P,73.20.D
TypesetusingREVTEX
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