d-wave induced zero-field resonances in dc pi-superconducting quantum interference devices.

نویسندگان

  • B Chesca
  • R R Schulz
  • B Goetz
  • C W Schneider
  • H Hilgenkamp
  • J Mannhart
چکیده

A dc pi SQUID consists of a superconducting ring interrupted by two Josephson junctions, one of which carries in equilibrium a pi phase difference, caused, for example, by the d-wave pairing symmetry of the high- T(c) cuprates. If this phase shift is maintained in the voltage state, anomalous resonance currents are expected in the SQUIDs transport characteristics. Here we report the observation of such resonances for high- T(c) dc pi SQUIDs, providing evidence for the influence of the d-wave symmetry on the voltage state of a Josephson junction for frequencies of several tens of GHz.

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عنوان ژورنال:
  • Physical review letters

دوره 88 17  شماره 

صفحات  -

تاریخ انتشار 2002