This title appears in the Scientific Report :
2001
Please use the identifier:
http://dx.doi.org/10.1063/1.1424465 in citations.
Please use the identifier: http://hdl.handle.net/2128/1323 in citations.
MgB2 tunnel junctions and 19 K low-noise dc superconducting quantum interference devices
MgB2 tunnel junctions and 19 K low-noise dc superconducting quantum interference devices
Point contact junctions made from two pieces of MgB2 can be adjusted to exhibit either superconductor-insulator-superconductor (SIS) or superconductor-normal metal-superconductor (SNS) current-voltage characteristics. The SIS characteristics are in good agreement with the standard tunneling model fo...
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Personal Name(s): | Zhang, Y. |
---|---|
Kinion, D. / Chen, J. / Clarke, I. G. J. / Hinks, D. G. / Crabtree, G. W. | |
Contributing Institute: |
Institut für Bio- und Chemosensoren; ISG-2 Streumethoden; IFF-STM |
Published in: | Applied physics letters, 79 (2001) S. 3995 |
Imprint: |
Melville, NY
American Institute of Physics
2001
|
Physical Description: |
3995 |
DOI: |
10.1063/1.1424465 |
Document Type: |
Journal Article |
Research Program: |
Schichtsysteme und Bauelemente der Supraleiterelektronik |
Series Title: |
Applied Physics Letters
79 |
Subject (ZB): | |
Link: |
OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/1323 in citations.
Point contact junctions made from two pieces of MgB2 can be adjusted to exhibit either superconductor-insulator-superconductor (SIS) or superconductor-normal metal-superconductor (SNS) current-voltage characteristics. The SIS characteristics are in good agreement with the standard tunneling model for s-wave superconductors, and yield an energy gap of (2.02+/-0.08) meV. The SNS characteristics are in good agreement with the predictions of the resistively-shunted junction model. DC superconducting quantum interference devices made from two SNS junctions yield magnetic flux and field noise as low as 4 mu Phi (0) Hz(-1/2) and 35 fT Hz(-1/2) at 19 K; Phi (0) is the flux quantum. (C) 2001 American Institute of Physics. |