| DOI | Resolve DOI: https://doi.org/10.1209/epl/i2004-10189-2 |
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| Author | Search for: Evaldson, M.; Search for: Zozoulenko, I. V.; Search for: Ciorga, M.1; Search for: Zawadzki, Piotr1; Search for: Sachrajda, A. S.1 |
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| Affiliation | - National Research Council Canada. NRC Institute for Microstructural Sciences
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| Format | Text, Article |
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| Abstract | We demonstrate that the magnetoconductance of small lateral quantum dots in the strongly coupled regime (i.e. when the leads can support one or more propagating modes) shows a pronounced splitting of the conductance peaks and dips which persists over a wide range of magnetic fields (from zero field to the edge-state regime) and is virtually independent of the magnetic field strength. Our numerical analysis of the conductance based on the Hubbard Hamiltonian demonstrates that this is essentially a many-body/spin effect that can be traced to a splitting of degenerate levels in the corresponding closed dot. The above effect in open dots can be regarded as a counterpart of the Coulomb-blockade effect in weakly coupled dots, with the difference, however, that the splitting of the peaks originates from interactions between electrons of opposite spin. |
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| Publication date | 2004 |
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| In | |
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| NPARC number | 12743965 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | d57c1b20-901e-47c9-96e1-475ce5b0f564 |
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| Record created | 2009-10-27 |
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| Record modified | 2020-04-17 |
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