Quintuplet condensation in the skyrmionic insulator Cu2OSeO3 at ultrahigh magnetic fields

Abstract

We report ultrahigh magnetic field Faraday rotation results on the chiral helimagnet Cu2OSeO3, the first Mott insulator showing skyrmion lattice phases and a linear magnetoelectric effect. Between 180 and 300 T, we find signatures of a Bose-Einstein condensation (BEC) of magnons, which can be described as a canted XY ferrimagnet. Due to the magnetoelectric coupling, the transverse magnetic order of the indivual Cu2+ spins is accompanied by a characteristic dome-like electric polarization which is crucial for the observation of the condensate via the Faraday rotation effect.

15 pages

References in corpus (22)

• The ALPS project release 1.3: open source software for strongly correlated systems
• Bose-Einstein Condensation in Magnetic Insulators
• Long wavelength helimagnetic order and skyrmion lattice phase in Cu2OSeO3
• Generalized Directed Loop Method for Quantum Monte Carlo Simulations
• Dimensional reduction at a quantum critical point
• Electric field-induced Skyrmion distortion and giant lattice rotation in the magnetoelectric insulator Cu2OSeO3
• Formation and rotation of skyrmion crystal in the chiral-lattice insulator Cu2OSeO3
• Observation of two independent skyrmion phases in a chiral magnetic material
• Strong Dzyaloshinskii-Moriya Interaction and Origin of Ferroelectricity in Cu2OSeO3
• The quantum origins of skyrmions and half-skyrmions in Cu2OSeO3
• Asymmetric quintuplet condensation in the frustrated S=1 spin dimer compound Ba3Mn2O8
• Ordered magnetic phases of the frustrated spin-dimer compound Ba3Mn2O8
• Magnetoelectric effects in single crystals of the cubic ferrimagnetic helimagnet Cu2OSeO3
• Establishing the fundamental magnetic interactions in the chiral skyrmionic Mott insulator Cu2OSeO3 by terahertz electron spin resonance
• Spin-lattice coupling in a ferrimagnetic spinel: The exotic $H$-$T$ phase diagram of MnCr${}_2$S${}_4$ up to 110 T
• Particle-hole symmetry breaking in a spin-dimer system TlCuCl${}_3$ observed at 100 T
• Spin excitations in the skymion host Cu2OSeO3
• Signatures of a magnetic superstructure phase induced by ultrahigh magnetic fields in a breathing pyrochlore antiferromagnet
• Field-induced spin level crossings within a quasi-XY antiferromagnetic state in Ba${}_2$FeSi${}_2$O${}_7$
• Magnetoelastic standing waves induced in UO${}_2$ by microsecond magnetic field pulses
• Crystal-Field Paschen-Back Effect on Ruby in Ultrahigh Magnetic Fields
• Quintuplet condensation in the skyrmionic insulator Cu2OSeO3 at ultrahigh magnetic fields

Cited by in corpus (2)

• Quintuplet condensation in the skyrmionic insulator Cu2OSeO3 at ultrahigh magnetic fields
• Ferroelectricity in a magnon Bose-Einstein condensate: Nonreciprocal superfluidity, exceptional points, and Majorana bosons