Researches
Development of Si single-electron-refrigerator device
【Researches Goal】Realization of Si single-electron refrigerator using single-electron-pump operation
Theoretical analysis of SER device operation
We propose a novel single-electron refrigerator (SER) that can be fabricated from semiconductor materials such as a silicon- on-insulator wafer [FIG.1].
FIG.1: Schematic diagram of the SER device. M and S represent the metal and intrinsic semiconductor dots, respectively.
The SER consists of a single-electron box and a single-electron pump (SEP).
An equivalent circuit of the SEP refrigerator was derived. Its stability diagram (Coulomb diamond) was theoretically calculated and found to have a distorted honeycomb structure [FIG.2].
An equivalent circuit of the SEP refrigerator was derived. Its stability diagram (Coulomb diamond) was theoretically calculated and found to have a distorted honeycomb structure [FIG.2].
FIG.2: Stability diagram of the SEP-refrigerator circuit at a control bias of 5 mV for electron extraction.
In addition, a Monte Carlo simulation predicts successful single-electron extraction and injection [FIG.3].
FIG.3: Success rate of single-electron extraction and injection at 0 K, as a function of absolute control bias |Vs|.
FIG.1: Schematic diagram of the SER device. M and S represent the metal and intrinsic semiconductor dots, respectively.
FIG.2: Stability diagram of the SEP-refrigerator circuit at a control bias of 5 mV for electron extraction.
FIG.3: Success rate of single-electron extraction and injection at 0 K, as a function of absolute control bias |Vs|.
【Related Papers】
IEICE Trans. Electron., E95-C (2012), 924.
Jpn. J. Appl. Phys., 50 (2011) 06GF20.
Adv. Mater. Res., 222 (2011) 366.
Jpn. J. Appl. Phys., 50 (2011) 06GF20.
Adv. Mater. Res., 222 (2011) 366.
