Resonances in a dilute gas of magnons and metamagnetism of isotropic frustrated ferromagnetic spin chains

2011/05/31 by M. Arlego, Marcelo Arlego, Fabian Heidrich‐Meisner +5 · 1 citation
Physics and Astronomy · #Antiferromagnetism #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Exchange interaction #Ferromagnetism #Frustration #Isotropy #Magnetic field #Magnetization #Magnon #Materials science #Metamagnetism #Physics #Physics of Superconductivity and Magnetism #Quantum many-body systems #Quantum mechanics #Spin (aerodynamics) #Thermodynamics #cond-mat.str-el

paper · pdf · doi:10.1103/physrevb.84.224409

published as Phys. Rev. B 84, 224409 (2011) · 12 pages RevTex4, 9 eps figures: Extended version, to appear in Phys. Rev. B

arxiv created 2011/11/23 · openalex publication_date 2011/12/14 · arxiv updated 2011/12/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We show that spin-S chains with SU(2)-symmetric, ferromagnetic nearest-neighbor and frustrating antiferromagnetic next-nearest-neighbor exchange interactions exhibit metamagnetic behavior under the influence of an external magnetic field for small S, in the form of a first-order transition to the fully polarized state. The corresponding magnetization jump increases gradually starting from an S-dependent critical value of exchange couplings and takes a maximum in the vicinity of a ferromagnetic Lifshitz point. The metamagnetism results from resonances in the dilute magnon gas caused by an interplay between quantum fluctuations and frustration.

Citations

• Many-body physics with ultracold gases
• Renormalization-group analysis of the ground-state properties of dilute Bose systems indspatial dimensions
• Feshbach resonances in ultracold gases
• Vector chiral order in frustrated spin chains
• General Theory of Spin-Wave Interactions
• Bose–Einstein condensation in magnetic insulators
• Field-induced chiral phase in isotropic frustrated spin chains
• Frustrated Antiferromagnets at High Fields: Bose-Einstein Condensation in Degenerate Spectra
• Universal emergence of the one-third plateau in the magnetization process of frustrated quantum spin chains
• Correlation functions and excitation spectrum of the frustrated ferromagnetic spin-12chain in an external magnetic field
• Field Dependence of the Intrinsic Domain Magnetization of a Ferromagnet

Cited by

• Vortex and Meissner phases of strongly interacting bosons on a two-leg ladder

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• Exact eigenstates and macroscopic magnetization jumps in strongly frustrated spin lattices
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