Observation of the bloch oscillations in an ultrasmall Josephson junction
Observation of the bloch oscillations in an ultrasmall Josephson junction
复制标题
超小型约瑟夫森结中布洛赫振荡的观察
DOI：
10.1103/physrevlett.67.2890
复制
发表时间：
1991
影响因子：
8.6
通讯作者：
D. Haviland
中科院分区：
文献类型：
--
作者：
L. Kuzmin;D. Haviland
We have studied the low-temperature behavior of lead-alloy Josephson tunnel junctions with area {ital S}{approx}0.01 {mu}m{sup 2}, isolated from their electromagnetic environment by high-resistance metallic resistors inserted into the current and voltage leads. Under irradiation with microwaves frequencies, {ital f}=3.5--10 GHz, the dc differential resistance {ital dV}/{ital dI}, as a function of the dc current {ital I}, showed peaks at {ital I}={plus minus}2{ital ef}. This effect, and other observations, arises due to the periodic electrical recharging of the junction by discrete Cooper pairs, and can be explained by the orthodox'' theory of Bloch oscillations.
We have studied the low-temperature behavior of lead-alloy Josephson tunnel junctions with area {ital S}{approx}0.01 {mu}m{sup 2}, isolated from their electromagnetic environment by high-resistance metallic resistors inserted into the current and voltage leads. Under irradiation with microwaves frequencies, {ital f}=3.5--10 GHz, the dc differential resistance {ital dV}/{ital dI}, as a function of the dc current {ital I}, showed peaks at {ital I}={plus minus}2{ital ef}. This effect, and other observations, arises due to the periodic electrical recharging of the junction by discrete Cooper pairs, and can be explained by the orthodox'' theory of Bloch oscillations.