Next Article in Journal
Acknowledgement to Reviewers of Condensed Matter in 2018
Previous Article in Journal
A Novel Bulk-Optics Scheme for Quantum Walk with High Phase Stability
Article Menu

Export Article

Open AccessArticle
Condens. Matter 2019, 4(1), 15; https://doi.org/10.3390/condmat4010015

Multiple Electronic Components and Lifshitz Transitions by Oxygen Wires Formation in Layered Cuprates and Nickelates

1
Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest-Ansermet, CH-1211 Geneva 4, Switzerland
2
Rome International Center for Materials Science, Superstripes, RICMASS Via dei Sabelli 119A, 00185 Rome, Italy
3
Institute of Crystallography, Consiglio Nazionale delle Ricerche, CNR, Monterotondo, I-00015 Roma, Italy
4
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409 Moscow, Russia
*
Author to whom correspondence should be addressed.
Received: 26 December 2018 / Revised: 16 January 2019 / Accepted: 16 January 2019 / Published: 21 January 2019
(This article belongs to the Special Issue From cuprates to Room Temperature Superconductors)
Full-Text   |   PDF [5114 KB, uploaded 24 January 2019]   |  

Abstract

There is growing compelling experimental evidence that a quantum complex matter scenario made of multiple electronic components and competing quantum phases is needed to grab the key physics of high critical temperature (Tc) superconductivity in layered cuprates. While it is known that defect self-organization controls Tc, the mechanism remains an open issue. Here we focus on the theoretical prediction of the multiband electronic structure and the formation of broken Fermi surfaces generated by the self-organization of oxygen interstitials Oi atomic wires in the spacer layers in HgBa2CuO4+δ, La2CuO4+δ and La2NiO4+δ, by means of self-consistent Linear Muffin-Tin Orbital (LMTO) calculations. The electronic structure of a first phase of ordered Oi atomic wires and of a second glassy phase made of disordered Oi impurities have been studied through supercell calculations. We show the common features of the influence of Oi wires in the electronic structure in three types of materials. The ordering of Oi into wires leads to a separation of the electronic states between the Oi ensemble and the rest of the bulk. The wire formation first produces quantum confined localized states near the wire, which coexist with, Second, delocalized states in the Fermi surface (FS) of doped cuprates. A new scenario emerges for high Tc superconductivity, where Kitaev wires with Majorana bound states are proximity-coupled to a 2D d-wave superconductor. View Full-Text
Keywords: oxygen interstitials; oxygen wires; multiband structure; cuprates; nickelates; Kitaev wires; Majorana bound states; superstripes oxygen interstitials; oxygen wires; multiband structure; cuprates; nickelates; Kitaev wires; Majorana bound states; superstripes
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Jarlborg, T.; Bianconi, A. Multiple Electronic Components and Lifshitz Transitions by Oxygen Wires Formation in Layered Cuprates and Nickelates. Condens. Matter 2019, 4, 15.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Condens. Matter EISSN 2410-3896 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top