Experimental apparatus used to observe & determine a value of the magnetic flux quantum in the high- temperature ceramic superconductor, yttrium- bari

---

Experimental apparatus used to observe & determine a value of the magnetic flux quantum in the high- temperature ceramic superconductor, yttrium- barium-copper oxide (Y-Ba2-Cu3-O7-x). The super- conductor ring (centre, dark grey) was cooled in liquid helium. A magnetic flux applied by a solenoid (right) was monitored by a supercond- ucting quantum interference device (SQUID) magnetometer (left). The value of the flux quantum thus determined implies that the charge carriers of superconductivity are electron pairs & gives a dramatic demonstration of quantum mechanics on a macroscopic scale. A paper describing this experiment was first published by Gough et al in Nature, volume 326,

---

Size: 3612px × 5460px
Photo credit: © LOW TEMPERATURE GROUP, DEPT. OF PHYSICS, UNIVERSITY OF BIRMINGHAM/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: conductance, conducting, conductivity, conductor, electronic, flux, high-temp., high-temperature, interf., magnetic, magnetometer, oxide, physics, quantum, squid, superconduct., superconductor, yttrium-barium-copper