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Metal-insulator transitions and nanoscale phase separation in various underdoped cuprates

https://doi.org/10.29317/ejpfm.2018020303

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Abstract

We demonstrate that the unconventional electron-phonon interactions, charge inhomogeneity and charge ordering in underdoped cuprates play an important role in metal-insulator transitions and nanoscale phase separation. In so doing, we argue that charge carriers (i.e. hole polarons) in these systems segregate into insulating (carrier-poor) and metallic/superconducting (carrier-rich) regions as a result of their specific ordering. We show that the metal-insulator transitions, nanoscale phase separation and coexisting insulating and metallic/superconducting phases are manifested in the unusual temperature dependences of the magnetic susceptibility and resistivity and in the suppression of superconductivity in various underdoped cuprates.

About the Authors

S. .. Dzhumanov
Institute of Nuclear Physics Uzbekistan Academy of Sciences
Uzbekistan


U. T. Kurbanov
Institute of Nuclear Physics Uzbekistan Academy of Sciences
Uzbekistan


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For citation:


Dzhumanov S..., Kurbanov U.T. Metal-insulator transitions and nanoscale phase separation in various underdoped cuprates. Eurasian Journal of Physics and Functional Materials. 2018;2(3):219-230. https://doi.org/10.29317/ejpfm.2018020303

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ISSN 2522-9869 (Print)
ISSN 2616-8537 (Online)