Modified Perturbation Theory Applied to Kondo-Type Transport through a Quantum Dot under a Magnetic Field
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概要
- 論文の詳細を見る
Linear conductance throttgh a qtranttrtn dot is calctnlated trnder a finite ttaatgnetic field tmsingthe ttaodified perttrrloattion theory. The naetlaod is b?tsed on the second-order pertttrbation theoryxvith respect to the Cotrloraab reptulsion, btrt Clue self'-energy is modified to reprodtrce the correctatoraaic liutait and to f'trlfill the Friedel SUIIII rtrle ex;tctly. Althotrgh this ttaethod is applicable onlyto zero tetmperattrre in a strict sense, it is ?rpproxitamately extended to finite teuaaperattrres. Itis I'otrnd th?tt the condtrctance near electron-hole syuaataaetry is suppressed by the application of'the uttagnetic field at low tettapersxttrres. Positive uaaagnetocondtrctance is observed in the c?rse oflar'e electron-hole asyttattaetry.
- 社団法人日本物理学会の論文
- 1999-09-15
著者
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Saso T
Saitama Univ. Saitama
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Saso Tetsuro
Department Of Physics Faculty Of Science Saitama University
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TAKAGI Osamu
Department of Physics, Faculty of Science, Saitama University
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Takagi Osamu
Department Of Physics Faculty Of Science Saitama University
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Takagi Osamu
Department Of Physics Saitama University
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- Theory of Valence-Fluctuating Tm Impurities.I
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- Quantum Fluctuation of Pinned Charge Density Waves vs Superconducting Fluctuation in One-Dimensional Conductors
- Quantum Monte Carlo Study on Impurity Pinning in One-Dimensional Interacting Electron Systems-Competition between Charge Density and Superconducting Fluctuations-
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