Classical Spin Nematic Transition in LiGa${}_{0.95}$In${}_{0.05}$Cr${}_4$O${}_8$

Abstract

We present the results of a combined ${}^7$Li NMR and diffraction study on LiGa${}_{0.95}$In${}_{0.05}$Cr${}_4$O${}_8$, a member of LiGa${}_{1-x}$In${}_x$Cr${}_4$O${}_8$ "breathing" pyrochlore family. Via specific heat and NMR measurements, we find that the complex sequence of first-order transitions observed for $x=0$ is replaced by a single, apparently second-order transition at $T_f=11$ K. Neutron and X-ray diffraction rule out both structural symmetry lowering and magnetic long-range order as the origin of this transition. Instead, reverse Monte Carlo fitting of the magnetic diffuse scattering indicates that the low temperature phase may be described as a collinear spin nematic state, characterized by a quadrupolar order parameter. This state also shows signs of short range order between collinear spin arrangements on tetrahedra, revealed by mapping the reverse Monte Carlo spin configurations onto a three-state color model describing the manifold of nematic states.

arXiv comment11 pages, 10 figures

References in corpus (18)

• Local spin resonance and spin-Peierls-like phase transition in a geometrically frustrated antiferromagnet
• Dipolar spin correlations in classical pyrochlore magnets
• Spin and orbital frustration in MnSc_2S_4 and FeSc_2S_4
• Statics and dynamics of an incommensurate spin order in a geometrically frustrated antiferromagnet CdCr${}_2$O${}_4$
• Spin-Peierls phases in pyrochlore antiferromagnets
• Breathing Pyrochlore Lattice Realized in A-Site Ordered Spinel Oxides LiGaCr4O8 and LiInCr4O8
• Magnetic order induced crystal symmetry lowering in ACr${}_2$O${}_4$ ferrimagnetic spinels
• Liquid-like correlations in single crystalline Y2Mo2O7: an unconventional spin glass
• Molecular spin resonance in the geometrically frustrated MgCr2O4 magnet by inelastic neutron scattering
• Nematic, vector-multipole, and plateau-liquid states in the classical O(3) pyrochlore antiferromagnet with biquadratic interactions in applied magnetic field
• Partial order from disorder in a classical pyrochlore antiferromagnet
• Novel Phase Transitions in the Breathing Pyrochlore Lattice: 7Li-NMR on LiInCr4O8 and LiGaCr4O8
• Broken parity and a chiral ground state in the frustrated magnet CdCr2O4
• Magnetic Phase Diagram of the Breathing Pyrochlore Antiferromagnet LiGa1-xInxCr4O8
• Crystal structures of spin-Jahn-Teller ordered MgCr_2O_4 and ZnCr_2O_4
• Ground-state selection and spin-liquid behaviour in the classical Heisenberg model on the breathing pyrochlore lattice
• Structural ground states of ($A,A^{\prime }$)Cr${}_2$O${}_4$($A$=Mg, Zn; $A^{\prime }$ = Co, Cu) spinel solid solutions: Spin-Jahn-Teller and Jahn-Teller effects
• Effect of magnetoelastic coupling on spin-glass behavior in Heisenberg pyrochlore antiferromagnets with bond disorder

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