Absence of charge-density-wave sliding in epitaxial charge-ordered Pr0.48Ca0.52MnO3 films
B. Fisher, J. Genossar, L. Patlagan, S. Kar-Narayan, X. Moya, D., S\'anchez, P. A. Midgley, N. D. Mathur
TL;DR
This study investigates charge ordering in epitaxial Pr0.48Ca0.52MnO3 films, finding no evidence of charge-density-wave sliding despite observable charge order superlattice and high electrical anisotropy.
Contribution
It demonstrates the absence of charge-density-wave sliding in epitaxial charge-ordered films, challenging expectations of such phenomena in similar materials.
Findings
Charge-ordered superlattice observed via TEM
No electrical signatures of charge order detected
No charge-density-wave sliding up to 10^3 V/cm
Abstract
For an epitaxial Pr0.48Ca0.52MnO3 film on NdGaO3, we use transmission electron microscopy to observe a "charge-ordered" superlattice along the in-plane direction a. The same film shows no electrical signatures of charge order. The in-plane electrical anisotropy (rho)a/(rho)c = 28 is constant, and there is no evidence of sliding charge density waves up to the large field of ~10^3 V/cm.
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