Crystalline phases in chiral ferromagnets: Destabilization of helical order

Abstract

In chiral ferromagnets, weak spin-orbit interactions twist the ferromagnetic order into spirals, leading to helical order. We investigate an extended Ginzburg-Landau theory of such systems where the helical order is destabilized in favor of crystalline phases. These crystalline phases are based on periodic arrangements of double-twist cylinders and are strongly reminiscent of blue phases in liquid crystals. We discuss the relevance of such blue phases for the phase diagram of the chiral ferromagnet MnSi.

arXiv comment6 pages, 5 figures (published version)

References in corpus (6)

• Spontaneous Skyrmion Ground States in Magnetic Metals
• Theory of the helical spin crystal: a candidate for the partially ordered state of MnSi
• Phase separation and suppression of critical dynamics at quantum transitions of itinerant magnets: MnSi and (Sr${}_{1-x}$Ca${}_x$)RuO${}_3$
• Blue Quantum Fog: Chiral Condensation in Quantum Helimagnets
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• Coupled skyrmion sublattices in Cu2OSeO3
• Helimagnon Bands as Universal Spin Excitations of Chiral Magnets
• Magnetic Blue Phase in the Chiral Itinerant Magnet MnSi
• Magnetic Fluctuations and Correlations in MnSi - Evidence for a Skyrmion Spin Liquid Phase
• Quantum order-by-disorder near criticality and the secret of partial order in MnSi
• General framework for transport in spin-orbit-coupled superconducting heterostructures: Nonuniform spin-orbit coupling and spin-orbit-active interfaces
• Noncommuting Momenta of Topological Solitons
• Complex itinerant ferromagnetism in noncentrosymmetric Cr11Ge19
• Origin and consequence of an unpinned helical magnet: application to partial order in MnSi under pressure
• Skyrmions and spirals in MnSi under hydrostatic pressure
• Columnar Fluctuations as a Source of Non-Fermi-Liquid Behavior in Weak Metallic Magnets
• Ordered Phases of Itinerant Dzyaloshinsky-Moriya Magnets and Their Electronic Properties
• Topical Review on Skyrmions and Hall Transport
• Anomalous Fermi liquid phase in metallic Skyrmion crystals
• Pressure Collapse of the Magnetic Ordering in MnSi via Thermal Expansion
• Skyrmions and Hall Transport
• Evolution of Helimagnetic Correlations when approaching the Quantum Critical Point of Mn${}_{1-x}$Fe${}_x$Si
• Smectons: Soft modes in electronic stripe phases, and their consequences for thermodynamics and transport
• A general model of MnSi-like spiral magnets
• Electric Field-Induced Skyrmion Crystals via Charged Monopoles in Insulating Helimagets