Low-Temperature Low-Field Phases of the Pyrochlore Quantum Magnet Tb${}_2$Ti${}_2$O${}_7$

Abstract

By means of ac magnetic-susceptibility measurements, we find evidence for a new magnetic phase of Tb${}_2$Ti${}_2$O${}_7$ below about 140 mK in zero magnetic field. In magnetic fields parallel to [111], this phase---exhibiting frequency- and amplitude-dependent susceptibility and an extremely slow spin dynamics---extends to about 70 mT, at which it gives way to another phase. The field dependence of the susceptibility of this second phase, which extends to about 0.6 T, indicates the presence of a weak magnetization plateau below 50 mK, as has been predicted by a single-tetrahedron four-spin model, giving support to the underlying proposal that the disordered low-field ground state of Tb${}_2$Ti${}_2$O${}_7$ is a quantum spin ice.

Accepted by Physical Review Letters

References in corpus (10)

• Dirac Strings and Magnetic Monopoles in Spin Ice Dy2Ti2O7
• Dynamically-Induced Frustration as a Route to a Quantum Spin Ice State in Tb2Ti2O7 via Virtual Crystal Field Excitations and Quantum Many-Body Effects
• Higgs transition from a magnetic Coulomb liquid to a ferromagnet in Yb_2Ti_2O_7
• Bose glass and Mott glass of quasiparticles in a doped quantum magnet
• Kagomé ice state in the dipolar spin ice Dy_{2}Ti_{2}O_{7}
• Magnetic density of states at low energy in geometrically frustrated systems
• A direct measurement of the Bose-Einstein Condensation universality class in NiCl${}_2$-4SC(NH${}_2$)${}_2$ at ultra-low temperatures
• Low-temperature magnetization in geometrically frustrated Tb2Ti2O7
• Proposal for a [111] Magnetization Plateau in the Spin Liquid State of Tb2Ti2O7
• Vibrating-coil magnetometry of the spin liquid properties of Tb2Ti2O7

Cited by in corpus (20)

• Quantum Spin Ice: A Search for Gapless Quantum Spin Liquids in Pyrochlore Magnets
• Frustrated quantum rare-earth pyrochlores
• Magnetoelastic excitations in the pyrochlore spin liquid Tb${}_2$Ti${}_2$O${}_7$
• Crystal field parameters of the rare earth pyrochlores $R_2$Ti${}_2$O${}_7$ ($R$ = Tb, Dy, Ho)
• Magnetically originated phonon-glass-like behavior in Tb_2Ti_2O_7 single crystal
• Rearrangement of uncorrelated valence bonds evidenced by low-energy spin excitations in YbMgGaO4
• Partial up-up-down order with the continuously distributed order parameter in the triangular antiferromagnet TmMgGaO4
• Absence of zero-point entropy in a triangular Ising antiferromagnet
• Temperature and Magnetic Field Dependence of Spin Ice Correlations in the Pyrochlore Magnet Tb2Ti2O7
• Dynamic quantum kagome ice
• Gapped and gapless short range ordered magnetic states with $(\frac{1}{2},\frac{1}{2},\frac{1}{2})$ wavevectors in the pyrochlore magnet Tb${}_{2+x}$Ti${}_{2-x}$O${}_{7+\delta }$
• Sample independence of magnetoelastic excitations in the rare earth pyrochlore Tb2Ti2O7
• Incipient Ferromagnetism in Tb2Ge2O7: Application of Chemical Pressure to the Enigmatic Spin Liquid, Tb2Ti2O7
• Acoustic signatures of the phases and phase transitions in Yb${}_2$Ti${}_2$O${}_7$
• Magnetic Field Induced Transition in Vanadium Spinels
• Electric field control of emergent electrodynamics in quantum spin ice
• Low-temperature heat transport of the geometrically frustrated antiferromagnets R_2Ti_2O_7 (R = Gd and Er)
• Anomalously slow spin dynamics and short-range correlations in the quantum spin ice systems Yb2Ti2O7 and Yb2Sn2O7
• Low temperature crystal structure and local magnetometry for the geometrically frustrated pyrochlore Tb2Ti2O7
• Low-temperature specific heat and heat transport of Tb${}_2$Ti${}_{2-x}$Zr${}_x$O${}_7$ single crystals