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Nodal quasiparticles in stripe ordered superconductors.
M Granath1, V Oganesyan, S A Kivelson
1Department of Physics, UCLA, Los Angeles, California 90095, USA.
Physical Review Letters
|November 3, 2001
Summary
This study explores quasi-one-dimensional superconductors, revealing how superconducting states can emerge from non-Fermi-liquid states. Researchers found coexistence of superconductivity with antiferromagnetic order and gapless quasiparticles.
Area of Science:
- Condensed matter physics
- Materials science
Background:
- Investigating quasi-one-dimensional superconductors provides insight into complex electronic behaviors.
- Striped superconductors are a key area of research in high-temperature superconductivity.
Purpose of the Study:
- To analyze the properties of a quasi-one-dimensional superconductor model.
- To understand the emergence of superconducting states from non-Fermi-liquid normal states.
- To explore the coexistence of superconductivity with other orders like antiferromagnetism.
Main Methods:
- Theoretical modeling of a quasi-one-dimensional system with alternating inequivalent chains.
- Analysis of the quasiparticle spectrum and order parameter symmetry.
Main Results:
- The model exhibits "d-wave-like" order parameter symmetry.
- Superconducting states can possess either a complete quasiparticle gap or gapless nodal quasiparticles.
- Antiferromagnetic order, often incommensurate, can coexist with superconductivity.
Conclusions:
- The studied model serves as a controllable system for understanding emergent superconductivity.
- The findings shed light on the complex interplay between different electronic orders in novel superconductors.