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Updated: May 31, 2026

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials
Published on: January 21, 2016
(1)H-NMR and charge transport in metallic polypyrrole at ultra-low temperatures and high magnetic fields
K Jugeshwar Singh1, W G Clark, K P Ramesh
1Department of Physics, Indian Institute of Science, Bangalore 560012, India.
Abstract:
The temperature dependence of conductivity, proton spin relaxation time (T(1)) and magnetoconductance (MC) in metallic polypyrrole (PPy) doped with PF(6)(-) have been carried out at mK temperatures and high magnetic fields. At T<1 K both electron-electron interaction (EEI) and hopping contributes to conductivity. The temperature dependence of a proton T(1) is classified in three regimes: (a) for T<6 K-relaxation mechanism follows a modified Korringa relation due to EEI and disorder, (b) for 6 K
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