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.

6 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
• Theory of helical spin crystals: phases, textures and properties
• Theory of helimagnons in itinerant quantum systems

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• The skyrmion lattice phase in three dimensional chiral magnets from Monte Carlo simulations
• Real-Space Berry Phases - Skyrmion Soccer
• Current induced rotational torques in the skyrmion lattice phase of chiral magnets
• Magnetic phase transitions in single crystals of the chiral helimagnet Cr1/3NbS2
• 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