Magnetic Ordering in Layered High Temperature Superconductors
G.G.Sergeeva (Kharkov Institute of Physics, Technology, Kharkov,, Ukraine)
TL;DR
This paper explores the complex magnetic phase transitions in layered high-temperature superconductors, highlighting a two-step process involving Berezinskii-Kosterlitz-Thouless transition and spin glass formation.
Contribution
It introduces a detailed scenario of sequential magnetic ordering phenomena specific to layered high-temperature superconductors after charge ordering.
Findings
Transition from 3D Heisenberg to 2D XY spin behavior at BKT temperature
Occurrence of 3D spin glass transition at lower temperatures
Identification of dielectric stripes as key to magnetic phase changes
Abstract
We discuss the scenario of two-step magnetic ordering in layered high temperature superconductors after charge ordering. As the temperature decreases, the transition from 3D Heisenberg spin behavior to 2D XY coupling of the Cu spins occurs at Berezinskii-Kosterlitz-Thouless temperature in dielectric stripes. Further temperature decreasing leads to the 3D spin glass transition.
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Taxonomy
TopicsTheoretical and Computational Physics · Physics of Superconductivity and Magnetism