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|Title:||Berry-phase-induced heat pumping and its impact on the fluctuation theorem|
|Citation:||Ren, J., Hänggi, P., Li, B. (2010-04-27). Berry-phase-induced heat pumping and its impact on the fluctuation theorem. Physical Review Letters 104 (17) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevLett.104.170601|
|Abstract:||Applying adiabatic, cyclic two-parameter modulations we investigate quantum heat transfer across an anharmonic molecular junction contacted with two heat baths. We demonstrate that the pumped heat typically exhibits a Berry-phase effect in providing an additional geometric contribution to heat flux. Remarkably, a robust fractional quantized geometric phonon response is identified as well. The presence of this geometric phase contribution in turn causes a breakdown of the fluctuation theorem of the Gallavotti-Cohen type for quantum heat transfer. This can be restored only if (i) the geometric phase contribution vanishes and if (ii) the cyclic protocol preserves the detailed balance symmetry. © 2010 The American Physical Society.|
|Source Title:||Physical Review Letters|
|Appears in Collections:||Staff Publications|
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