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Intrinsic Inhomogeneities in Manganite Thin Films Investigated with Scanning Tunneling Spectroscopy

T. Becker·C. Streng·Y. Luo·V. Moshnyaga·B. Damaschke·Nic Shannon·K. Samwer
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Abstract

Thin films of La0.7Sr0.3MnO3 on MgO show a metal insulator transition and colossal magnetoresistance. The shape of this transition can be explained by intrinsic spatial inhomogeneities, which give rise to a domain structure of conducting and insulating domains at the submicrometer scale. These domains then undergo a percolation transition. The tunneling conductance and tunneling gap measured by scanning tunneling spectroscopy were used to distinguish and visualize these domains.

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T. Becker, C. Streng, Y. Luo, V. Moshnyaga, B. Damaschke, Nic Shannon, K. Samwer. 2002-12-06. Intrinsic Inhomogeneities in Manganite Thin Films Investigated with Scanning Tunneling Spectroscopy. https://doi.org/10.1103/physrevlett.89.237203

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