Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2011-07-18
Phys. Rev. B 84, 195117 (2011)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Scientific paper
10.1103/PhysRevB.84.195117
With this study we analyze the fluctuations of an electronic only heat current across a molecular wire. The wire is composed of a single energy level which connects to two leads which are held at different temperatures. By use of the Green function method we derive the finite frequency power spectral density (PSD) of the emerging heat current fluctuations. This result assumes a form quite distinct from the power spectral density of the accompanying electric current noise. The complex expression simplifies considerably in the limit of zero frequency, yielding the heat noise intensity. The heat noise intensity still depends on the frequency in the zero-temperature limit, assuming different asymptotic behaviors in the low- and high-frequency regimes. These findings evidence that heat transport across molecular junctions can exhibit a rich structure beyond the common behavior which emerges in the linear response limit.
Denisov Sergey
Hänggi Peter
Zhan Fei
No associations
LandOfFree
Electronic Heat Transport Across a Molecular Wire: Power Spectrum of Heat Fluctuations 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 Electronic Heat Transport Across a Molecular Wire: Power Spectrum of Heat Fluctuations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic Heat Transport Across a Molecular Wire: Power Spectrum of Heat Fluctuations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-271595