OBSERVATION OF PARITY-INDUCED SUPPRESSION OF JOSEPHSON TUNNELING IN THE SUPERCONDUCTING SINGLE-ELECTRON TRANSISTOR

被引:184
作者
JOYEZ, P
LAFARGE, P
FILIPE, A
ESTEVE, D
DEVORET, MH
机构
[1] Service de Physique de l'Etat Condensé, Commissariat à l'Energie Atomique
关键词
D O I
10.1103/PhysRevLett.72.2458
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We have measured the supercurrent branch of a superconducting single electron transistor as a function of gate charge, temperature, and magnetic field. At low temperature and magnetic field, the switching current goes from a minimum to a maximum when the gate charge is varied from 0 to e, as expected for an island in the ground state with an even electron number. When the odd electron number ground state becomes populated by an increase of temperature or field, the Josephson tunneling is strongly suppressed, in agreement with theoretical predictions.
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收藏
页码:2458 / 2461
页数:4
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