Details of Grant 

EPSRC Reference:	GR/R71931/01
Title:	The Electrodynamic Response of Exotic Superconductors
Principal Investigator:	Gough, Professor C
Other Investigators:	Forgan, Professor EM
Researcher Co-Investigators:
Project Partners:
Department:	School of Physics and Astronomy
Organisation:	University of Birmingham
Scheme:	Standard Research (Pre-FEC)
Starts:	02 November 2002	Ends:	31 March 2003	Value (£):	370,950
EPSRC Research Topic Classifications:	Condensed Matter Physics
EPSRC Industrial Sector Classifications:
Related Grants:
Panel History:	Panel Date Panel Name Outcome 28 Jan 2002 Physics responsive Jan 02 Deferred
Summary on Grant Application Form
A unique microwave cryogenic facility will be further developed to allow accurate measurements at radio frequencies (-10 MHz) and microwave frequencies (1-40 GHz) of both the real and imaginary components of the complex surface impedance of recently discovered exotic superconductors down to -30 mK in fields up to 6T. This will include in-depth microwave studies of Sr2Ru04 - an odd parity p-wave superconductor, MgB2 - a BCS superconductor with pairing via optical father than acoustic phonons, and CeColn5 - a very recently newly discovered, high conductivity metals, with the highest Tc of any known heavy fermion superconductor. As time allows, we will also investigate anumber of other interesting exotic organic, heavy fermion and borocarbide superconductors, which have never previously been investigated at microwaves frequencies over such a wide range of temperatures, fields and frequencies. A novel dielectric resonator system ( rather than a niobium cavity) is used for cavity perturbation measurements in a magnetic field, allowing us to investigate the mixed state and flux dynamics of all such superconductors. The low temperatures and wide range of microwave frequencies will also enable us to investigate the properties of a weak-coupling, sub -1 K, BCS superconductor when microwave photon frequencies are comparable with or exceed the gap - a regime never previously accessible. We will also use a range of microwave frequencies to explore the possibility of using pair-breaking abosrption to measure the gap function near the nodes in cuprate HTS superconductors.
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Organisation Website:	http://www.bham.ac.uk