Conductance through quantum dots studied by finite temperature DMRG

Isao Maruyama, Naokazu Shibata, Kazuo Ueda

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

With the finite temperature density matrix renormalization group method (FT-DMRG), we have developed a method to calculate thermodynamic quantities and the conductance of a quantum dot system. Conductance is written by the local density of states at the dot. The density of states is calculated with the numerical analytic continuation from the thermal Green's function which is obtained directly by the FT-DMRG. Typical Kondo behaviors in the quantum dot system are investigated clearly by comparing the conductance with the magnetic and charge susceptibilities: Coulomb oscillation peaks and the unitarity limit. We also discuss the advantage and disadvantage of the present method.

Original languageEnglish
Pages (from-to)434-440
Number of pages7
Journaljournal of the physical society of japan
Volume73
Issue number2
DOIs
Publication statusPublished - 2004 Feb
Externally publishedYes

Keywords

  • Density renormalization group method
  • Kondo effect
  • Maximum entropy method
  • Padé approximation
  • Quantum dot

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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