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Low-Temperature Glassy Response of Ultrathin Manganite Films to Electric and Magnetic Fields

A. Bhattacharya·M. Eblen-Zayas·N. E. Staley·A. L. Kobrinskii·A. M. Goldman
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Abstract

The glassy response of thin films of La0.8Ca0.2MnO3 to external magnetic and gated electrostatic fields in a field-effect geometry has been studied at low temperatures. A hierarchical response with irreversible memory effects, non-ergodic time evolution, aging and annealing behavior of the resistance suggest that the dynamics are governed by strain relaxation for both electronic and magnetic perturbations. Cross-coupling of charge, spin, and strain have been exploited to tune the coercivity of an ultrathin manganite film by electrostatic gating.

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A. Bhattacharya, M. Eblen-Zayas, N. E. Staley, A. L. Kobrinskii, A. M. Goldman. 2004-07-23. Low-Temperature Glassy Response of Ultrathin Manganite Films to Electric and Magnetic Fields. https://doi.org/10.1103/physrevb.72.132406

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