Short-range order and increased transition temperature in LiVO2 with weakened trimer frustration

Abstract

Vanadium atoms in layered LiVO2 form in-plane periodic vanadium trimers at low temperatures, but the trimers appear randomly in the stacking direction because there are many trimer configurations with comparable lattice energy. We detailed an original modeling scheme to represent glassy states with a completely disordered trimer configuration in the stacking structure. Through PDF analysis using this model, we show that the synthesis method can yield two types of low-temperature stacking structures: a completely disordered stacking structure and a short-range order in the stacking structure. The phase transition temperature of the former sample is about 15 K lower than that of the latter. We discuss that this is due to the strong trimer frustration that appears in the sample without short-range order, which suppresses the phase transition temperature, similar to the frustration effect in conventional spin systems.

arXiv comment6 pages, 4 figures

References in corpus (20)

• Orbitally-driven Peierls state in spinels
• Orbital effects in solids: basics, recent progress and opportunities
• Spin singlet formation in MgTi${}_2$O${}_4$: evidence of a helical dimerization pattern
• New Type Phase Transition of Li2RuO3 with Honeycomb Structure
• A valence bond liquid on the honeycomb lattice
• Charge-cluster glass in an organic conductor
• Long-range order and spin-liquid states of polycrystalline Tb${}_{2+x}$Ti${}_{2-x}$O${}_{7+y}$
• Anomalous metallic state in the vicinity of Metal to Valence Bond Solid insulator transition in LiVS2
• Band Jahn-Teller Instability and Formation of Valence Bond Solid in a Mixed-Valent Spinel Oxide LiRh2O4
• Local orbital degeneracy lifting as a precursor to an orbital-selective Peierls transition
• Absence of Jahn-Teller transition in the hexagonal Ba3CuSb2O9 single crystal
• Regular-Triangle Trimer and Charge Order Preserving the Anderson Condition in the Pyrochlore Structure of CsW${}_2$O${}_6$
• Vanadium trimers randomly aligned along the c-axis direction in layered LiVO2
• Large entropy change derived from the orbitally assisted three-centered two-electron σ bond formation in a metallic Li0.33VS2
• Orbital reformation with vanadium trimerization in $d^2$ triangular lattice LiVO${}_2$ revealed by ${}^{51}$V NMR
• Two-orbital degeneracy lifted state as a local precursor to a metal-insulator transition
• Slow dynamics of disordered zigzag chain molecules in layered LiVS2 under electron irradiation
• Dual Orbital Degeneracy Lifting in a Strongly Correlated Electron System
• Robust atomic orbital in the cluster magnet LiMoO2
• Charge-ordered state satisfying the Anderson condition in LiRh2O4 arising from local dimer order

Cited by in corpus (4)

• Observation of local atomic displacements intrinsic to the double zigzag chain structure of 1T-MTe2 (M = V, Nb, Ta)
• Zigzag chain order of LiVSe${}_2$ developing away from the vanadium trimer phase transition boundary
• Reexamination of the charge-ordered dimer pattern in the spinel compound CuIr2S4 using single-crystal synchrotron x-ray diffraction
• Structures of group-15 elemental solids from an effective boundary theory