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dc.contributor.authorChung, Chung-Houen_US
dc.contributor.authorHofstetter, Walteren_US
dc.date.accessioned2019-04-03T06:40:51Z-
dc.date.available2019-04-03T06:40:51Z-
dc.date.issued2007-07-01en_US
dc.identifier.issn1098-0121en_US
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevB.76.045329en_US
dc.identifier.urihttp://hdl.handle.net/11536/10577-
dc.description.abstractWe study transport through two quantum dots coupled by a Ruderman-Kittel-Kasuya-Yoshida interaction as a function of temperature and magnetic field. By applying the numerical renormalization group method, we obtain the transmission and the linear conductance. At zero temperature and magnetic field, we observe a quantum phase transition between the Kondo screened state and a local spin singlet as the RKKY interaction is tuned. Above the critical RKKY coupling, the Kondo peak is split. However, we find that both finite temperature and magnetic field restore the Kondo resonance. Our results agree well with recent transport experiments on gold grain quantum dots in the presence of magnetic impurities [H. B. Heersche , Phys. Rev. Lett. 96, 017205 (2006)].en_US
dc.language.isoen_USen_US
dc.titleKondo effect in coupled quantum dots with RKKY interaction: Effects of finite temperature and magnetic fielden_US
dc.typeArticleen_US
dc.identifier.doi10.1103/PhysRevB.76.045329en_US
dc.identifier.journalPHYSICAL REVIEW Ben_US
dc.citation.volume76en_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:000248540000082en_US
dc.citation.woscount31en_US
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