๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Point contact tunnelling apparatus with temperature and magnetic field control

โœ Scribed by L. Ozyuzer; J.F. Zasadzinski; K.E. Gray

Book ID
104111515
Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
257 KB
Volume
38
Category
Article
ISSN
0011-2275

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โœฆ Synopsis

The design and testing of a new device for point contact tunnelling measurements in superconductors are described. The insert is designed for use with a continuous flow cryostat which allows for a large range of sample temperatures from 1.5 K to room temperature. The use of nonmagnetic parts allows tunnelling measurements to be performed in high magnetic fields. Testing was carried out on a conventional superconductor, Nb, in fields up to 6 T using Nb and Au tips to obtain superconductorinsulator-superconductor and superconductor-insulator-normal metal junctions. In addition, a moderate-T c oxide superconductor, Ba 1 -x K x BiO 3 , was used to obtain temperature and magnetic field dependencies of the energy gap.

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