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Volumn 77, Issue 12, 2008, Pages

Scaling analysis for Kondo effect in quantum dot embedded in Aharonov-Bohm ring

Author keywords

Aharonov Bohm ring; Fano effect; Kondo effect; Quantum dot; Scaling method

Indexed keywords


EID: 57549085047     PISSN: 00319015     EISSN: 13474073     Source Type: Journal    
DOI: 10.1143/JPSJ.77.123714     Document Type: Article
Times cited : (15)

References (25)
  • 15
    • 84901014713 scopus 로고    scopus 로고
    • R. M. Konik: J. Stat. Mech. (2004) L11001.
    • R. M. Konik: J. Stat. Mech. (2004) L11001.
  • 19
    • 57549096376 scopus 로고    scopus 로고
    • The tunnel coupling of |ψk〉 to the quantum dot is described by |〈d|HT|ψk〉 |2, 2V2/N sin2 ka(1, x, 2√αx cos φ cos ka, 1, x)2, 4x cos2 ka] ≡ |V0(ε k)|2, whereas the density of states in the leads is ν0(εk, N/(2πt sin ka, Since the tunneling effect between the leads and dot is characterized by ν0|V0|2, we choose the density of states ν(εk) in eq, 6) with fixed tunnel coupling V in such a way that νV2, ν0|V0|2 in the wide-band limit
    • 2 in the wide-band limit.
  • 22
    • 57549083081 scopus 로고    scopus 로고
    • In the vicinity of the strong-coupling fixed point (ξ ≪ p, 2νJ ∼ [1, O(p2)]/ln(1, ξ) and 2ν K ∼, 3p/4, O(p3)]/ln(1, ξ, where ξ, D/TK, 1 and p, P(φ)T K/D0. Since |p| ≪ 1, the second term in eq, 17) can be neglected even in this region, although the scaling equations, 17) and 18, can be applied only to the region of ξ ≳ 1. The logarithmic corrections from the scattering by K are neglected in the conductance, eq, 22
    • 0. Since |p| ≪ 1, the second term in eq. (17) can be neglected even in this region, although the scaling equations, (17) and (18), can be applied only to the region of ξ ≳ 1. The logarithmic corrections from the scattering by K are neglected in the conductance, eq. (22).
  • 23
    • 57549096378 scopus 로고    scopus 로고
    • An electron is scattered by the localized spin in the dot from site j to site i (i, j, 0, 1) by Jij, JViVj/V2, where V0, VL and V1, VR
    • R.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.