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Misfit Strain in Superlattices Controlling the Electron-Lattice Interaction via Microstrain in Active Layers
Joint Authors
Bianconi, Antonio
Ricci, Alessandro
Poccia, Nicola
Source
Advances in Condensed Matter Physics
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-02-08
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
High-temperature superconductivity (HTS) emerges in quite different electronic materials: cuprates, diborides, and iron-pnictide superconductors.
Looking for unity in the diversity we find in all these materials a common lattice architecture: they are practical realizations of heterostructures at atomic limit made of superlattices of metallic active layers intercalated by spacers as predicted in 1993 by one of us.
The multilayer architecture is the key feature for the presence of electronic topological transitions where the Fermi surface of one of the subbands changes dimensionality.
The superlattice misfit strain η between the active and spacer layers is shown to be a key variable to drive the system to the highest critical temperature Tc that occurs at a particular point of the 3D phase diagram Tc(δ,η) where δ is the charge transfer or doping.
The plots of Tc as a function of misfit strain at constant charge transfer in cuprates show a first-order quantum critical phase transition where an itinerant striped magnetic phase competes with superconductivity in the proximity of a structural phase transition, that is, associated with an electronic topological transition.
The shape resonances in these multigap superconductors is associated with the maximum Tc.
American Psychological Association (APA)
Poccia, Nicola& Ricci, Alessandro& Bianconi, Antonio. 2010. Misfit Strain in Superlattices Controlling the Electron-Lattice Interaction via Microstrain in Active Layers. Advances in Condensed Matter Physics،Vol. 2010, no. 2010, pp.1-7.
https://search.emarefa.net/detail/BIM-458409
Modern Language Association (MLA)
Poccia, Nicola…[et al.]. Misfit Strain in Superlattices Controlling the Electron-Lattice Interaction via Microstrain in Active Layers. Advances in Condensed Matter Physics No. 2010 (2010), pp.1-7.
https://search.emarefa.net/detail/BIM-458409
American Medical Association (AMA)
Poccia, Nicola& Ricci, Alessandro& Bianconi, Antonio. Misfit Strain in Superlattices Controlling the Electron-Lattice Interaction via Microstrain in Active Layers. Advances in Condensed Matter Physics. 2010. Vol. 2010, no. 2010, pp.1-7.
https://search.emarefa.net/detail/BIM-458409
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-458409