Specific heat of the skyrmion lattice phase and field-induced tricritical point in MnSi

Abstract

We report high-precision measurements of the temperature and magnetic field dependence of the specific heat, C(T,H), across the magnetic phase diagram of MnSi. Clear anomalies establish the skyrmion lattice unambiguously as a thermodynamic phase. The evolution of the specific heat anomalies, the field dependence of the entropy released at the phase transitions, and the temperature versus field dependence of crossover lines provide striking evidence of a tricritical point at an internal magnetic field of 340mT and temperature of 28.5K. The existence of this tricritical point represents strong support of a helimagnetic Brazovskii transition, i.e., a fluctuation-induced first order transition at H = 0.

7 pages, 5 figures, including supplementary materials, Phys. Rev. Lett. accepted

References in corpus (3)

• Spontaneous Skyrmion Ground States in Magnetic Metals
• Fluctuation-induced first-order phase transition in Dzyaloshinskii-Moriya helimagnets
• Magnetic phase diagram of MnSi inferred from magnetization and ac susceptibility

Cited by in corpus (54)

• Spin-resolved Andreev levels and parity crossings in hybrid superconductor-semiconductor nanostructures
• The skyrmion lattice phase in three dimensional chiral magnets from Monte Carlo simulations
• Real-Space and Reciprocal-Space Berry Phases in the Hall Effect of Mn${}_{1-\mathrm{x}}$Fe${}_{\mathrm{x}}$Si
• Domain wall-gated skyrmion logic
• Complex magnetic phase diagram and skyrmion lifetime in an ultrathin film from atomistic simulations
• Generic aspects of skyrmion lattices in chiral magnets
• Symmetry breaking, slow relaxation dynamics, and topological defects at the field-induced helix reorientation in MnSi
• Helical magnetic structure and the anomalous and topological Hall effects in epitaxial B20 Fe${}_{1-y}$Co${}_y$Ge films
• History dependence of the magnetic properties of single-crystal Fe${}_{1-x}$Co${}_x$Si
• B-T phase diagram of Pd/Fe/Ir(111) computed with parallel tempering Monte Carlo
• Magnetoelastic Coupling and Phases in the Skyrmion Lattice Magnet Gd2PdSi3 Discovered by High-resolution Dilatometry
• Band structure of helimagnons in MnSi resolved by inelastic neutron scattering
• Magnetoentropic signatures of skyrmionic phase behavior in FeGe
• Magnetic Fluctuations, Precursor Phenomena and Phase Transition in MnSi under Magnetic Field
• A Raman study of the temperature and magnetic field dependence of electronic and lattice properties in MnSi
• Stabilization mechanisms of magnetic skyrmion crystal and multiple-$Q$ states based on momentum-resolved spin interactions
• Solid--liquid transition of skyrmions in a two-dimensional chiral magnet
• Multiple phases with tricritical point and Lifshitz point in skyrmion host Cu${}_2$OSeO${}_3$
• Room-temperature skyrmion phase in bulk Cu2OSeO3 under high pressures
• Weak crystallization of fluctuating skyrmion textures in MnSi
• Positron spectroscopy of point defects in the skyrmion-lattice compound MnSi
• Dissipation processes in the insulating skyrmion compound Cu2OSeO3
• Inexhaustible physics of the helical magnet MnSi: field evolution of the magnetic phase transition inferred from ultrasound studies
• Response of the skyrmion lattice in MnSi to cubic magnetocrystalline anisotropies
• Kinetic small angle neutron scattering of the Skyrmion lattice in MnSi
• Universality of the helimagnetic transition in cubic chiral magnets: Small angle neutron scattering and neutron spin echo spectroscopy studies of Fe${}_{1-x}$Co${}_x$Si
• Evolution of magneto-crystalline anisotropies in Mn${}_{1-x}$Fe${}_x$Si and Mn${}_{1-x}$Co${}_x$Si as inferred from small-angle neutron scattering and bulk properties
• Exploring the origins of the Dzyalloshinski-Moria interaction in MnSi
• Critical spin-flip scattering at the helimagnetic transition of MnSi
• Interplay of itinerant magnetism and reentrant spin-glass behavior in Fe${}_x$Cr${}_{1-x}$
• Thermal expansion and magneto-volume studies of the itinerant helical magnet MnSi
• Signatures of a liquid-crystal transition in spin-wave excitations of skyrmions
• Anisotropic magneto-crystalline coupling of the skyrmion lattice in MnSi
• Evidence of a first-order smectic -- hexatic transition and its proximity to tricritical point in smectic films
• Versatile module for experiments with focussing neutron guides
• Formation of incommensurate long-range magnetic order in the Dzyaloshinskii-Moriya antiferromagnet Ba${}_2$CuGe${}_2$O${}_7$ studied by neutron diffraction
• Magnetoentropic mapping and computational modeling of cycloids and skyrmions in the lacunar spinels GaV${}_4$S${}_8$ and GaV${}_4$Se${}_8$
• Stability of the skyrmion lattice near the critical temperature in cubic helimagnets
• Field-Induced Magnetic States in the Metallic Rare-Earth Layered Triangular Antiferromagnet TbAuAl${}_4$Ge${}_2$
• Magnetic properties of the noncentrosymmetric tetragonal antiferromagnet EuPtSi${}_3$
• Complex magnetic phases in polar tetragonal intermetallic NdCoGe${}_3$
• Compositional Studies of Metals with Complex Order by means of the Optical Floating-Zone Technique
• Entropic signatures of the skyrmion lattice phase in MnSi1-xAlx and Fe1-yCoySi
• Manifestation of the spin textures in the thermopower of MnSi
• Chiral Magnetism in an Itinerant Helical Magnet, MnSi - An Extended 29Si NMR Study -
• Anomalous magnetoentropic response of skrymion crystals
• Critical temperature of one-dimensional Ising model with long-range interaction revisited
• Anisotropy of the magnetic-field-induced phase pocket in the non-Kramers doublet system PrIr${}_2$Zn${}_{20}$
• Momentum-space theory for topological magnons in 2D ferromagnetic skyrmion lattices
• Uniaxial Pressure Effects, Phase Diagram, and Tricritical Point in the Centrosymmetric Skyrmion Lattice Magnet GdRu${}_2$Si${}_2$
• Comparison of skyrmion phases between poly and single-crystal MnSi by composite magnetoelectric method
• Search for pressure-induced tricriticality in Cr
• Cubic magnetic anisotropy in $B$20 magnets: Interplay of anisotropy and magnetic order in Fe${}_{1-x}$Co${}_x$Si
• Evolution of magnetic bubble domains in the uniaxial ferromagnet CeRu${}_2$Ga${}_2$B inferred from the Hall effect and ac magnetic susceptibility