Low-temperature ratchet current
نویسندگان
چکیده
منابع مشابه
Temperature resistant optimal ratchet transport.
Stable periodic structures containing optimal ratchet transport, recently found in the parameter space dissipation versus ratchet parameter by [A. Celestino et al. Phys. Rev. Lett. 106, 234101 (2011)], are shown to be resistant to reasonable temperatures, reinforcing the expectation that they are essential to explain the optimal ratchet transport in nature. Critical temperatures for their destr...
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Recent advances in nonequilibrium statistical mechanics shed new light on the ratchet effect. The ratchet motion can thus be understood in terms of symmetry (breaking) considerations. We introduce an additional symmetry operation besides time reversal, that switches between two modes of operation. That mode reversal combined with time reversal decomposes the nonequilibrium action so as to clari...
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In this work, the ratchet dynamics of Brownian particles driven by an external sinusoidal (harmonic) force is investigated. The gating ratchet effect is observed when another harmonic is used to modulate the spatially symmetric potential in which the particles move. For small amplitudes of the harmonics, it is shown that the current (average velocity) of particles exhibits a sinusoidal shape as...
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We study theoretically the efficiency of an asymmetric superconducting quantum interference device (SQUID)which is constructed as a loopwith three capacitively and resistively shunted Josephson junctions. Two junctions are placed in series in one arm and the remaining one is located in the other arm. The SQUID is threaded by an externalmagnetic flux and driven by an external current of both con...
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ژورنال
عنوان ژورنال: Mathematics and Mechanics of Complex Systems
سال: 2019
ISSN: 2325-3444,2326-7186
DOI: 10.2140/memocs.2019.7.239