Ground state selection under pressure in the quantum pyrochlore magnet Yb2Ti2O7

Abstract

A quantum spin liquid is a novel state of matter characterized by quantum entanglement and the absence of any broken symmetry. In condensed matter, the frustrated rare-earth pyrochlore magnets Ho${}_2$Ti${}_2$O${}_7$ and Dy${}_2$Ti${}_2$O${}_7$, so-called spin ices, exhibit a classical spin liquid state with fractionalized thermal excitations (magnetic monopoles). Evidence for a quantum spin ice, in which the magnetic monopoles become long range entangled and an emergent quantum electrodynamics arises, seems within reach. The magnetic properties of the quantum spin ice candidate Yb${}_2$Ti${}_2$O${}_7$ have eluded a global understanding and even the presence or absence of static magnetic order at low temperatures is controversial. Here we show that sensitivity to pressure is the missing key to the low temperature behaviour of Yb${}_2$Ti${}_2$O${}_7$. By combining neutron diffraction and muon spin relaxation on a stoichiometric sample under pressure, we evidence a magnetic transition from a disordered, non-magnetic, ground state to a splayed ferromagnetic ground state.

References in corpus (3)

• Pyrochlore Photons: The U(1) Spin Liquid in a S=1/2 Three-Dimensional Frustrated Magnet
• Lightly stuffed pyrochlore structure of single-crystalline Yb2Ti2O7 grown by the optical floating zone technique
• Vacancy defects and monopole dynamics in oxygen-deficient pyrochlores

Cited by in corpus (19)

• Frustrated quantum rare-earth pyrochlores
• Frustration and anisotropic exchange in ytterbium magnets with edge-shared octahedra
• Experimental Insights into Ground State Selection of Quantum XY Pyrochlores
• Reentrant Phase Diagram of $\mathrm{Y}{\mathrm{b}}_2\mathrm{T}{\mathrm{i}}_2{\mathrm{O}}_7$ in $⟨111⟩$ Magnetic Field
• Role of defects in determining the magnetic ground state of ytterbium titanate
• Magnon interactions in the frustrated pyrochlore ferromagnet Yb${}_2$Ti${}_2$O${}_7$
• Unravelling competing microscopic interactions at a phase boundary: a single crystal study of the metastable antiferromagnetic pyrochlore Yb${}_2$Ge${}_2$O${}_7$
• Strong quantum fluctuations due to competition between magnetic phases in a pyrochlore iridate
• Persistent spin dynamics in the pressurized spin-liquid candidate YbMgGaO${}_4$
• Frustration on a centred pyrochlore lattice in metal-organic frameworks
• Dynamical scaling as a signature of multiple phase competition in Yb${}_2$Ti${}_2$O${}_7$
• Crystal field excitations from $\mathrm{Y}{\mathrm{b}}^{3+}$ ions at defective sites in highly stuffed $\mathrm{Y}{\mathrm{b}}_2\mathrm{T}{\mathrm{i}}_2{\mathrm{O}}_7$
• Orientation Dependence of the Magnetic Phase Diagram of Yb${}_2$Ti${}_2$O${}_7$
• Traversing the pyrochlore stability diagram; microwave-assisted synthesis and discovery of mixed B-site Ln${}_2$InSbO${}_7$ family
• Long-wavelength correlations in ferromagnetic titanate pyrochlores as revealed by small angle neutron scattering
• Fluctuating magnetism in Zn-doped averievite with well-separated kagome layers
• TRIM Simulations Tool for ${\mu }^{+}$ Stopping Fraction in Hydrostatic Pressure Cells
• Magnetic ground state of a Jeff = 1/2 based frustrated triangular lattice antiferromagnet
• Emergence of a Fluctuating Ground State in Y-kapellasite under Pressure