Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2000-09-07
Phys. Rev. B 62 (2000) 12617-12620
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
12 pages, 1 figure, to appear in Phys. Rev. B
Scientific paper
10.1103/PhysRevB.62.12617
The grand potential $\Omega$ and the response $R = - \partial \Omega /\partial x$ of a phase-coherent confined noninteracting electron gas depend sensitively on chemical potential $\mu$ or external parameter $x$. We compute their autocorrelation as a function of $\mu$, $x$ and temperature. The result is related to the short-time dynamics of the corresponding classical system, implying in general the absence of a universal regime. Chaotic, diffusive and integrable motions are investigated, and illustrated numerically. The autocorrelation of the persistent current of a disordered mesoscopic ring is also computed.
Leboeuf Patricio
Monastra A.
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