Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2011-01-03
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
5 pages, 4 figures
Scientific paper
10.1103/PhysRevB.83.201304
We investigate in a nonperturbative way the dynamics of a correlated quantum capacitor. We find that the many-body correlations do not disturb the universal low-frequency relaxation resistance per channel, $R_q(\omega=0) = h/4e^2$ ensured by the Korringa-Shiba rule whereas the interpretation of the quantum capacitance $C_q$ in terms of the density of states fails when strong correlations are present. The AC resistance $R_q(\omega)$ shows huge peaks (with values larger than $h/4e^2$) at $\hbar\omega \approx \pm \Gamma^*$, where $\Gamma^*$ is the renormalized level broadening. These peaks are merged to a single one at $\omega=0$ when a finite Zeeman field is applied comparable to $\Gamma^*$. The observed features of $R_q$, being most evident in the Kondo regime, are attributed to the generation of particle-hole excitations in the contacts accomplished by spin-flip processes in the dot.
Choi Mahn-Soo
Jonckheere Thibaut
Lee Minchul
Lopez Rosa
Martin Thierry
No associations
LandOfFree
Many-body Correlation Effect on Mesoscopic Charge Relaxation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Many-body Correlation Effect on Mesoscopic Charge Relaxation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Many-body Correlation Effect on Mesoscopic Charge Relaxation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-238365