Nanometer-scale phase separation in a colossal magnetoresistive manganite

Rößler, S.; Ernst, S.; Padmanabhan, B.; Elizabeth, S.; Bhat, H. L.; Steglich, F.; Wirth, S.

doi:10.1209/0295-5075/83/17009

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Nanometer-scale phase separation in a colossal magnetoresistive manganite

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Rößler, S.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Ernst, S.
Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Steglich, F.
Frank Steglich, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Wirth, S.
Steffen Wirth, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Rößler, S., Ernst, S., Padmanabhan, B., Elizabeth, S., Bhat, H. L., Steglich, F., & Wirth, S. (2008). Nanometer-scale phase separation in a colossal magnetoresistive manganite. Europhysics Letters, 83:, pp. 17009-p1-17009-p5. doi:10.1209/0295-5075/83/17009.

引用: https://hdl.handle.net/11858/00-001M-0000-0015-2840-C

要旨

Scanning tunneling microscopy and spectroscopy were conducted over a broad temperature range on single crystals of Pr0.68Pb0.32MnO3. Spectroscopic studies revealed inhomogeneous maps of the zero-bias conductance with a broad distribution of the local conductivities only within a narrow temperature range close to the metal-insulator transition. An analysis of the conductance histograms based on these maps gave direct evidence for phase separation into insulating and conducting areas. This phase separation was found to be confined only to the transition region. Copyright (C) EPLA, 2008.