Electric field induced memory and aging effects in pure solid N2
S. Pilla, J. A. Hamida, K. A. Muttalib, N. S. Sullivan
Abstract
We report combined high sensitivity dielectric constant and heat capacity measurements of pure solid N2 in the presence of a small external ac electric field in the audio frequency range. We have observed strong field induced aging and memory effects which show that field cooled samples may be prepared in a variety of metastable states leading to a free energy landscape with experimentally ``tunable'' barriers, and tunneling between these states may occur within laboratory time scales.
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