Conductance peak distributions in quantum dots at finite temperature: Signatures of the charging energy

Physical Review B - Condensed Matter and Materials Physics

Volumn 58, Issue 12, 1998, Pages R7524-R7527

  Alhassid, Y ^a   Gokcedag M ^a   Stone, A ^a  

^a YALE UNIVERSITY   (United States)

Author keywords

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Indexed keywords

EID: 0000643543     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.58.R7524     Document Type: Article

References (19)

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19. There are two possible explanations that require further studies to be substantiated: (i) Self-consistent density functional calculations of the single-particle spectrum of dots [M. Stopa, Phys. Rev. B 54, 13 767 (1996);and private communication] find approximately periodic oscillations of the level density near (Formula presented) as (Formula presented) increases. Therefore in certain regions of gate voltage the effective value of Δ would be smaller than the average value, leading to anomalously large correlations (due to an effectively larger value of (Formula presented)). (ii) The enhancement is due to spin-paired levels. Such levels are inferred to exist from the presence of nearby levels with very similar magnetoconductance traces [S. R. Patel et al. (unpublished)].