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Updated: Jun 7, 2025
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Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
Published on: July 20, 2022
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Pairing phase favored by magnetic frustration.
A Krindges1, C V Morais1, M Schmidt2
1Instituto de Física e Matemática-Universidade Federal de Pelotas, Pelotas 96010-900, RS, Brazil.
Journal of Physics. Condensed Matter : an Institute of Physics Journal
|November 13, 2024
Summary
Magnetic frustration enhances superconductivity by favoring electron pairing. Increasing intercluster coupling promotes pairing, revealing tricriticality and supporting the onset of superconducting states in frustrated magnetic models.
Area of Science:
- Condensed Matter Physics
- Quantum Materials
- Statistical Mechanics
Background:
- Investigating the relationship between magnetic frustration and superconductivity is crucial for understanding complex materials.
- The Bardeen-Cooper-Schrieffer (BCS) theory provides a foundational model for superconductivity.
Purpose of the Study:
- To explore the interplay between magnetic frustration and pairing mechanisms.
- To analyze ground-state and thermal phase transitions in a frustrated magnetic model.
Main Methods:
- Utilized a fermionic formulation within a Cluster Mean-Field (CMF) method.
- Divided the lattice into clusters with exact intracluster dynamics and mean-field intercluster interactions.
- Introduced and tuned two coupling parameters: intracluster (g) and intercluster (g').
Main Results:
- A gradual increase in the intercluster coupling (g'/g) favors the pairing phase and alters criticality.
- Observed the presence of tricriticality for specific ranges of g'/g.
- Increased magnetic frustration weakens magnetic order, promoting pairing at lower interaction strengths.
Conclusions:
- Magnetic frustration plays a key role in favoring the pairing phase.
- The study supports the onset of superconducting states in systems with competing magnetic interactions.
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