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Details of Grant 

EPSRC Reference: EP/D505429/2
Title: Crossover from Positive to Negative Colossal Magnetoresistance
Principal Investigator: Green, Professor MA
Other Investigators:
Wills, Professor A Bramwell, Professor S
Researcher Co-Investigators:
Project Partners:
Brookhaven National Laboratory
Department: Chemistry
Organisation: UCL
Scheme: Standard Research (Pre-FEC)
Starts: 01 August 2007 Ends: 31 January 2009 Value (£): 116,705
EPSRC Research Topic Classifications:
Materials Characterisation Materials Synthesis & Growth
EPSRC Industrial Sector Classifications:
Electronics
Related Grants:
Panel History:  
Summary on Grant Application Form
In the past few years, the study of colossal magnetoresistance has unveiled fascinating new physics that has had a major impact on the understanding of strongly correlated electron systems. This proposal outlines research to investigate a new mechanism for colossal magnetoresistance (CMR) recently discover in doped ZnCr2Se4, which is vastly different to that reported for both manganate perovskites and pyrochlores, with a significant effect observed in low fields as well as an unprecedented crossover from positive to negative colossal magnetoresistance (MR > 90 %) as a function of both field and temperature.
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