Correlated Metallic States with Intermediately Oscillated Cu Chains in the Multifunctional Composite Crystal System Cu^sub x^V^sub 4^O^sub 11

The structural and electronic properties for the multifunctional composite crystal system Cu...V...O... with 2.01 ≤ x ≤ 2.37 that is potential candidates of high-capacity insertion electrode as well as thermoelectric device for the optimum composition x ... 2.2 are explored through measurements of x-ray four-circle diffraction, magnetization, electron paramagnetic resonance and nuclear magnetic resonance for V ions. The correlated metallic transports between T... ... 340 K and T... ... 120 K for x ... 2.2 are proved by an enhancement of Pauli paramagnetism that is revealed from the consistent analysis for magnetic susceptibilities, localized spin susceptibilities, and Knight shifts. The significant oscillations of Cu ions above 300 K close to T... and the the complete orders below T... are suggested on the basis of the g factors and the spin dynamics through the lifetime of the vibronic state in the Orbach process which depend on the composition. For a small range of x, the electron correlation above T... seems to be suppressed by the rapid oscillation of Cu with assumption of the temperature-independent presence ratio of Cu.../Cu... (ProQuest: ... denotes formulae/symbols omitted.)