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Volumn 81, Issue 1, 2010, Pages

Josephson effect for SU(4) carbon-nanotube quantum dots

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EID: 77954792377     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.81.012502     Document Type: Article
Times cited : (23)

References (44)
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    • It is straightforward to allow for orbital or Zeeman fields or for more general interactions. We also consider identical tunnel couplings between the dot and both electrodes. Asymmetries produce similar effects as the orbital mixing in Ht
    • It is straightforward to allow for orbital or Zeeman fields or for more general interactions. We also consider identical tunnel couplings between the dot and both electrodes. Asymmetries produce similar effects as the orbital mixing t in H t.
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    • Different phases can be labeled by S2 + T2, and we use the notation (S,T ) =0 for S=T=0, (S,T ) =1/2 for S=T=1/2, and (S,T ) =1 for both (S,T ) = (1,0 ) and (0,1)
    • Different phases can be labeled by S 2 + T 2, and we use the notation (S, T) = 0 for S = T = 0, (S, T) = 1 / 2 for S = T = 1 / 2, and (S, T) = 1 for both (S, T) = (1, 0) and (0,1).
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    • Strictly speaking, precisely at Δ = ∞ there are degeneracies that make the classification ambiguous. However, at finite Δ, Fig. indicates that the reported phases are stable. We have also confirmed their stability for θ ≠ 0
    • Strictly speaking, precisely at Δ = ∞ there are degeneracies that make the classification ambiguous. However, at finite Δ, Fig. indicates that the reported phases are stable. We have also confirmed their stability for θ ≠ 0.


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