Josephson junction with two superconducting current components

被引：6

作者：

Kulikov, K. V. ^{[1
,2
]}

Davud, R. ^{[3
]}

Nakhmedov, E. P. ^{[4
,5
]}

Shukrinov, Yu. M. ^{[1
,2
]}

机构：

[1] Joint Inst Nucl Res, Bogoliubov Lab Theoret Phys, Dubna 141980, Moscow Oblast, Russia

[2] State Univ Dubna, Dubna 141980, Moscow Oblast, Russia

[3] Cairo Univ, Cairo, Egypt

[4] Moscow MV Lomonosov State Univ, Baku Branch, AZ-1144 Baku, Azerbaijan

[5] Natl Acad Sci Azerbaijan, Inst Phys, AZ-1143 Baku, Azerbaijan

来源：

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS | 2017年 / 125卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

MAJORANA FERMIONS; STATES;

D O I：

10.1134/S1063776117070202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The properties of a Josephson junction with the 2 pi- and 4 pi-periodic superconducting current component have been analyzed. In the range of low voltages, such a junction exhibits the 4 pi periodicity of the phase difference for the Majorana current amplitude much smaller than the Josephson current, which makes it possible to observe Josephson current oscillations with a fractional period for small dissipation beta < 1 in the hysteresis region. The effect the 4 pi-periodic Majorana current component is also manifested in a change in the sequence of steps in the ladder structure emerging on the current-voltage (I-V) characteristic of the junction. We have determined the interval of external electromagnetic radiation amplitudes, in which the manifestation of the fractional Josephson effect on the I-V characteristic is most significant.

引用

页码：333 / 339

页数：7

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