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https://doi.org/10.1103/PhysRevLett.104.170601
Title: | Berry-phase-induced heat pumping and its impact on the fluctuation theorem | Authors: | Ren, J. Hänggi, P. Li, B. |
Issue Date: | 27-Apr-2010 | 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 | URI: | http://scholarbank.nus.edu.sg/handle/10635/95864 | ISSN: | 00319007 | DOI: | 10.1103/PhysRevLett.104.170601 |
Appears in Collections: | Staff Publications |
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