Conductance through Quantum Dots Studied by Finite Temperature DMRG
arXiv:cond-mat/0406594 · doi:10.1143/JPSJ.73.434
Abstract
With the Finite temperature Density Matrix Renormalization Group method (FT-DMRG), we depeloped a method to calculate thermo-dynamical quantities and the conductance of a quantum dot system. Conductance is written by the local density of states on the dot. The density of states is calculated with the numerical analytic continuation from the thermal Green's function which is obtained directly from the FT-DMRG. Typical Kondo behaviors in the quantum dot system are observed conveniently by comparing the conductance with the magnetic and charge susceptibilities: Coulomb oscillation peaks and the unitarity limit. We discuss advantage of this method compared with others.
14 pages, 13 fiures
References in corpus (5)
- The Kondo Effect in the Unitary Limit
- Thermodynamics of the anisotropic Heisenberg chain calculated by the density matrix renormalization group method
- A reliable Pade analytical continuation method based on a high accuracy symbolic computation algorithm
- Temperature-induced gap formation in dynamic correlation functions of the one-dimensional Kondo insulator --- Finite-temperature density-matrix renormalization-group study ---
- Universal cross-over behavior of a magnetic impurity and consequences for doping in spin-1/2 chains