Journal
JOURNAL OF APPLIED PHYSICS
Volume 114, Issue 8, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4819103
Keywords
-
Categories
Funding
- National Natural Science Foundation of China [11204074, 11274105, 91227125]
- National Basic Research Program of China [2012CB932703, 2011CB606405]
- Hunan Provincial Natural Science Foundation of China [11JJ4005, 12JJ2002]
- Scientific Research Fund of Hunan Provincial Education Department [10B022]
- Aid Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province
- Open Research Fund Program of the State Key Laboratory of Low-Dimensional Quantum Physics
Ask authors/readers for more resources
To analyze heat generation in a quantum dot coupled to normal leads and subject to an ac field, a formula is derived for the heat generated Q using the nonequilibrium Keldysh Green's function technique. The numerical results show that the external ac field influences significantly the heat generated. The threshold bias decreases to V-t = omega(0) - n omega through photon absorption. Additional steps emerge from photon-assisted tunneling, and the width of the step is equal to the frequency of photon omega and the height increases with the magnitude of the ac field. For large V/omega, the Q/omega curves display many resonant peaks due to multi-photon absorptions and emissions. Moreover, a negative differential heat generation can be observed as omega > omega(0). (C) 2013 AIP Publishing LLC.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
