Spin-orbit fluctuations in frustrated heavy-fermion metal LiV${}_2$O${}_4$

Abstract

Spin fluctuations were studied over a wide momentum ($\hslash Q$) and energy ($E$) space in the frustrated $d$-electron heavy-fermion metal LiV${}_2$O${}_4$ by time-of-flight inelastic neutron scattering. We observed the overall $Q$$-$$E$ evolutions near the characteristic $Q=0.6$ Å${}^{-1}$ peak and found another weak broad magnetic peak around 2.4 Å${}^{-1}$. The data are described by a simple response function, a highly itinerant magnetic form factor, and antiferromagnetic short-range spatial correlations, indicating that heavy-fermion formation is attributable to spin-orbit fluctuations with orbital hybridization.

arXiv comment5 pages, 3 figures

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• Observation of flat bands due to band hybridization in 3d-electron heavy-fermion compound CaCu3Ru4O12
• Metallic Spin Liquid-like Behavior of LiV${}_2$O${}_4$
• Charge-spin-orbital Fluctuations in Mixed Valence Spinels: Comparative Study of AlV2O4 and LiV2O4
• LiV2O4: Hund-Assisted Orbital-Selective Mottness
• Strong ferromagnetic fluctuations in a doped checkerboard lattice
• Softening of breathing elastic mode and trigonal elastic mode in disordered pyrochlore magnet NaCaCo${}_2$F${}_7$
• Quest for the Origin of Heavy Fermion Behavior in $d$-Electron Systems
• On the complexity of spinels: Magnetic, electronic, and polar ground states
• Dynamic Spin-Lattice Coupling and Statistical Interpretation for the Molecular-Like Excitations in Frustrated Pyrochlores