Half-Skyrmion theory for high-temperature superconductivity

  title={Half-Skyrmion theory for high-temperature superconductivity},
  author={Takao Morinari},
  journal={arXiv: Superconductivity},
  • T. Morinari
  • Published 2009
  • Physics
  • arXiv: Superconductivity
We review the half-Skyrmion theory for copper-oxide high-temperature superconductivity. In the theory, doped holes create a half-Skyrmion spin texture which is characterized by a topological charge. The formation of the half-Skyrmion is described in the single hole doped system, and then the half-Skyrmion excitation spectrum is compared with the angle-resolved photoemission spectroscopy results in the undoped system. Multi-half-Skyrmion configurations are studied by numerical simulations. We… Expand
5 Citations

Figures from this paper

Destruction of Magnetic Long-Range Order by Hole-Induced Skyrmions in Two-Dimensional Heisenberg Model
Motivated by the rapid destruction of antiferromagnetic long-range order in hole-doped cuprate high-temperature superconductors, we study the effect of skyrmions on the magnetic long-range orderExpand
Metal-insulator transitions in cuprate high-temperature superconductors
We study the possible mechanisms of carrier localization and metal–insulator transitions (MITs) in inhomogeneous hole-doped cuprates. We show that the insulating state of doped cuprates is differentExpand
Topological Spin Texture Created by Zhang--Rice Singlets in Cuprate Superconductors
One of the most important effects of strong electron correlation in high-Tc cuprates is the formation of Zhang-Rice singlets. By fully accounting for the quantum correlation effect of Zhang-RiceExpand
Topological antiferromagnetic spintronics
The recent demonstrations of electrical manipulation and detection of antiferromagnetic spins have opened up a new chapter in the story of spintronics. Here, we review the emerging research fieldExpand
Topological antiferromagnetic spintronics: Part of a collection of reviews on antiferromagnetic spintronics
The recent demonstrations of electrical manipulation and detection of antiferromagnetic spins have opened up a chapter in the spintronics story. In this article, we review the emerging research fieldExpand


Half-skyrmion picture of a single-hole-doped CuO 2 plane
Based on the Zhang-Rice singlet picture, it is argued that the half-skyrmion is created by the doped hole in the single-hole-doped high-${T}_{c}$ cup rates with N\'eel ordering. The spinExpand
Mechanism of unconventional superconductivity induced by skyrmion excitations in two-dimensional strongly correlated electron systems
We propose a mechanism of unconventional superconductivity in two-dimensional strongly correlated electron systems. We consider a two-dimensional Kondo lattice system or double exchange system withExpand
Pseudogap and Short-Range Antiferromagnetic Correlation Controlled Fermi Surface in Underdoped Cuprates: From Fermi Arc to Electron Pocket
Motivated by recent quantum oscillation observations in the underdoped high-temperature superconductors, the effect of the short-range antiferromagnetic correlations on the electronic properties ofExpand
Destruction of the Fermi surface in underdoped high-Tc superconductors
The Fermi surface—the set of points in momentum space describing gapless electronic excitations—is a central concept in the theory of metals. In this context, the normal ‘metallic’ state of theExpand
Doping a Mott insulator: Physics of high-temperature superconductivity
This article reviews the physics of high-temperature superconductors from the point of view of the doping of a Mott insulator. The basic electronic structure of cuprates is reviewed, emphasizing theExpand
The spin- 1/2 Heisenberg antiferromagnet on a square lattice and its application to the cuprous oxides
The spin-1/2 antiferromagnetic Heisenberg model on a square lattice is used to describe the dynamics of the spin degrees of freedom of undoped copper oxides. Even though the model lacks an exactExpand
Strong coupling analysis of QED$_3$ for excitation spectrum broadening in undoped high-temperature superconductor
Theory of quantum electrodynamics in three spatial-time dimension is applied to the two-dimensional $S=1/2$ quantum Heisenberg antiferromagnet in order to investigate a doped hole in high-temperatureExpand
The pseudogap in high-temperature superconductors: an experimental survey
We present an experimental review of the nature of the pseudogap in the cuprate superconductors. Evidence from various experimental techniques points to a common phenomenology. The pseudogap is seenExpand
Cuprate Fermi orbits and Fermi arcs: the effect of short-range antiferromagnetic order.
It is shown that a reduced xi gives an asymmetric broadening of the quasiparticle dispersion, resulting in simulated ARPES data very similar to those observed in experiment, and predicted features include "Fermi arcs" close to ak=(pi/2, pi/2). Expand
How to detect fluctuating stripes in the high-temperature superconductors
We discuss fluctuating order in a quantum disordered phase proximate to a quantum critical point, with particular emphasis on fluctuating stripe order. Optimal strategies for extracting informationExpand