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Properties of Heat Generation in a Double Quantum Dot

Properties of Heat Generation in a Double Quantum Dot
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摘要 We investigate the electronic-current-induced heat generation in a double quantum dot connected by two normal leads. The dots are coupled in series with a coupling strength td. It is found that, at zero temperature and weak dot-lead coupling, td affects the heating and current heavily. In particular, the effects on the heat generation and on the current are quite different. For example, at a heating valley the current can exhibit a deep valley, a plateau, or a high peak depending on td. As a result, we can find an ideal working condition, large current while small heating, for the double dots system by tuning the interdot coupling strength. We investigate the electronic-current-induced heat generation in a double quantum dot connected by two normal leads. The dots are coupled in series with a coupling strength td. It is found that, at zero temperature and weak dot-lead coupling, td affects the heating and current heavily. In particular, the effects on the heat generation and on the current are quite different. For example, at a heating valley the current can exhibit a deep valley, a plateau, or a high peak depending on td. As a result, we can find an ideal working condition, large current while small heating, for the double dots system by tuning the interdot coupling strength.
出处 《Chinese Physics Letters》 SCIE CAS CSCD 2014年第6期232-236,共5页 中国物理快报(英文版)
基金 Supported by the National Natural Science Foundation of China under Grant No 11164011, and the Provincial Natural Science Foundation of Jiangxi Province under Grant Nos 20122BAB212006 and 20132BAB212003.
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