Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session F42: Non-Chalcogenide 2D Materials and Quantum Dots
11:30 AM–2:06 PM,
Tuesday, March 16, 2021
Sponsoring
Unit:
DCMP
Chair: Tiancong Zhu, UC Berkeley
Abstract: F42.00011 : Three terminal vibron coupled hybrid quantum dot thermoelectric refrigeration.
1:30 PM–1:42 PM
Not Participating
Presenter:
Bhaskaran Muralidharan
(Electrical Engineering, Indian Inst of Tech-Bombay)
Authors:
Swarnadip Mukherjee
(Electrical Engineering, Indian Inst of Tech-Bombay)
Bitan De
(Electrical Engineering, Indian Inst of Tech-Bombay)
Bhaskaran Muralidharan
(Electrical Engineering, Indian Inst of Tech-Bombay)
vibron-coupled quantum dot hybrid system coupled to two electronic reservoirs
and a phonon bath is proposed and analyzed in detail. While investigating the
non-trivial role of electron-phonon interactions, we show that, although they are
well known to be detrimental from a general refrigeration perspective, they can be
engineered to favorably improve the trade-off between the cooling power (CP)
and the coefficient-of-performance (COP). To justify its
impact in optimizing the peak CP and COP, we show that a weak coupling with
the bath is preferable when the phonons relax through it and a strong coupling
is suitable in the opposite case when the phonons are extracted from the bath.
We believe that many aspects presented here could
offer important guidelines for a possible realization of molecular and quantum
dot thermoelectric refrigerator.
References:
[1] S. Mukherjee, B. De and B. Muralidharan, arXiv:2004.12763 (2020).
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