摘要
We investigate the unique properties of current-induced heat generation in nanojunctions,such as failed Q α I relation(where Q is the heat generation and I the current),threshold voltage required to generate heat,etc.By employing the lead-quantum dot(QD)-lead system,we find these unique properties stem from(i) the discontinuity of Fermi distribution at chemical potentials of the leads and(ii) the satellite peaks in spectral function of the QD electron,which are induced by the electron-phonon interaction.
基金
Supported by the National Natural Science Foundation of China under Grant No.11164011
the Provincial Nature Science Foundation of Jiangxi under Grant Nos.20122BAB212006 and 20132BAB212003
