Unveiling new quantum phases in the Shastry-Sutherland compound SrCu2(BO3)2up to the saturation magnetic field

Abstract

Under magnetic fields, quantum magnets often undergo exotic phase transitions with various kinds of order. The discovery of a sequence of fractional magnetization plateaus in the Shastry-Sutherland compound SrCu2(BO3)2 has played a central role in the high-field research on quantum materials, but so far this system could only be probed up to half the saturation value of the magnetization. Here, we report the first experimental and theoretical investigation of this compound up to the saturation magnetic field of 140 T and beyond. Using ultrasound and magnetostriction techniques combined with extensive tensor-network calculations (iPEPS), several spin-supersolid phases are revealed between the 1/2 plateau and saturation (1/1 plateau). Quite remarkably, the sound velocity of the 1/2 plateau exhibits a drastic decrease of -50%, related to the tetragonal-to-orthorhombic instability of the checkerboard-type magnon crystal. The unveiled nature of this paradigmatic quantum system is a new milestone for exploring exotic quantum states of matter emerging in extreme conditions.

arXiv comment8 pages, 4 figures, 2 tables

References in corpus (35)

• Classical simulation of infinite-size quantum lattice systems in two spatial dimensions
• Competing states in the t-J model: uniform d-wave state versus stripe state
• Accurate determination of tensor network state of quantum lattice models in two dimensions
• Corner Transfer Matrix Renormalization Group Method
• Exact dimer ground state of the two dimensional Heisenberg spin system SrCu_2(BO_3)_2
• Simulation of two dimensional quantum systems on an infinite lattice revisited: corner transfer matrix for tensor contraction
• Magnetic Superstructure in the Two-Dimensional Quantum Antiferromagnet SrCu2(BO3)2
• Simulation of strongly correlated fermions in two spatial dimensions with fermionic Projected Entangled-Pair States
• Quantum Phase Transitions in the Shastry-Sutherland Model for $\mathbf{SrC}{\mathbf{u}}_2(\mathbf{B}{\mathbf{O}}_3{)}_2$
• The iPEPS algorithm, improved: fast full update and gauge fixing
• Stripes in the two-dimensional t-J model with infinite projected entangled-pair states
• Tensor network study of the Shastry-Sutherland model in zero magnetic field
• Magnetization of SrCu2(BO3)2 in ultrahigh magnetic fields up to 118 T
• Crystals of bound states in the magnetization plateaus of the Shastry-Sutherland model
• Magnetization plateaus of the Shastry-Sutherland model for SrCu_2(BO_3)_2: SDW, supersolid and bound states
• Observation of a 4-spin Plaquette Singlet State in the Shastry-Sutherland compound SrCu2(BO3)2
• Magnetostriction and magnetic texture to 97.4 Tesla in frustrated SrCu2(BO3)2
• Dispersion and Symmetry of Bound States in the Shastry-Sutherland Model
• A quantum magnetic analogue to the critical point of water
• Quantum phases of SrCu2(BO3)2 from high-pressure thermodynamics
• Magnetization plateaus as insulator-superfluid transitions in quantum spin systems
• Fractalization drives crystalline states in a frustrated spin system
• Incomplete devil's staircase in the magnetization curve of SrCu2(BO3)2
• Phase diagram of the Shastry-Sutherland Compound SrCu2(BO3)2 under extreme combined conditions of field and pressure
• Field dependence of the quantum ground state in the Shastry-Sutherland system SrCu${}_2$(BO${}_3$)${}_2$
• Direct Observation of the Quantum Phase Transition of SrCu${}_2$(BO${}_3$)${}_2$ by High-Pressure and Terahertz Electron Spin Resonance
• Theory of spin density profile in the magnetization plateaus of SrCu_2(BO_3)_2
• X-Band ESR Determination of Dzyaloshinsky-Moriya Interaction in 2D SrCu${}_2$(BO${}_3$)${}_2$ System
• Soundwave Anomalies in SrCu_{2}(BO_{3})_{2}
• High-speed 100 MHz strain monitor using fiber Bragg grating and optical filter for magnetostriction measurements under ultrahigh magnetic fields
• Two Spin-State Crystallizations in LaCoO${}_3$
• Magnetization Plateaus in the Shastry-Sutherland Model for SrCu_2(BO_3)_2: Results of Fourth-Order Perturbation Expansion with a Low-Density Approximation
• Ultrasound measurement technique for the single-turn-coil magnets
• Magnetically hidden state on the ground floor of the magnetic Devil's staircase
• Magnetoelastic standing waves induced in UO${}_2$ by microsecond magnetic field pulses

Cited by in corpus (22)

• Plaquette Singlet Transition, Magnetic Barocaloric Effect, and Spin Supersolidity in the Shastry-Sutherland Model
• Field-induced bound-state condensation and spin-nematic phase in SrCu${}_2$(BO${}_3$)${}_2$ revealed by neutron scattering up to 25.9 T
• Quantum criticality with emergent symmetry in the extended Shastry-Sutherland model
• Phase diagram of the quantum spin-1/2 Heisenberg-$\Gamma$ model on a frustrated zigzag chain
• High temperature series expansions of S = 1/2 Heisenberg spin models: algorithm to include the magnetic field with optimized complexity
• Quantum phases of hardcore bosons with repulsive dipolar density-density interactions on two-dimensional lattices
• Tensor network study of the Shastry-Sutherland model with weak interlayer coupling
• A review on magnetic field induced spin crossover in LaCoO${}_3$ up to 600 T
• Neural Network Quantum States analysis of the Shastry-Sutherland model
• Quantum spin liquid phase in the Shastry-Sutherland model revealed by high-precision infinite projected entangled-pair states
• Crystal-field magnetostriction of the spin ice under ultrahigh magnetic fields
• Quantifying spatio-temporal patterns in classical and quantum systems out of equilibrium
• High-fidelity dimer excitations using quantum hardware
• High-field phase diagram of the chiral-lattice antiferromagnet Sr(TiO)Cu4(PO4)4
• Emergent Spin Supersolids in Frustrated Quantum Materials
• Theory of magnetism for rare-earth magnets on the Shastry-Sutherland lattice with non-Kramers ions
• X-ray free-electron laser observation of giant and anisotropic magnetostriction in $\beta$-O${}_2$ at 110 Tesla
• Triplons, triplon pairs and dynamical symmetries in laser-driven Shastry-Sutherland magnets
• Anomalous thermal broadening in the Shastry-Sutherland model and SrCu${}_2($BO${}_3{)}_2$
• Magnetostriction in the $J$-$K$-$\Gamma$ model: Application of the numerical linked cluster expansion
• Bullet pressure-cell design for neutron scattering experiments with horizontal magnetic fields and dilution temperatures
• Robust semiclassical magnetization plateau in the kagome lattice