Microscopic Magnetic Properties of (V$_{1-x}$Ti$_{x}$)$_2$O$_3$ near the Phase Boundary of the Metal-Insulator Transition

Jun Kikuchi; Noriyuki Wada; Kousuke Nara; Kiyoichiro Motoya

doi:10.1016/S0022-3697(02)00016-1

paper

Microscopic Magnetic Properties of (V $_{1 - x}$ Ti $_{x}$ ) $_{2}$ O $_{3}$ near the Phase Boundary of the Metal-Insulator Transition

arXiv:cond-mat/0111059 · doi:10.1016/S0022-3697(02)00016-1

Abstract

Magnetic susceptibility (chi) and $^{51}$ V NMR have been measured in (V $_{1 - x}$ Ti $_{x}$ ) $_{2}$ O $_{3}$ near the phase boundary of the metal-insulator transition. It is established that the transition from antiferromagnetic insulating (AFI) to antiferromagnetic metallic phases near $x_{c} \approx 0.05$ is not quantum critical but is discontinuous with a jump of the transition temperature. In the AFI phase at 4.2 K, we observed the satellite in the zero-field $^{51}$ V NMR spectrum around 181 MHz in addition to the ``host'' resonance around 203 MHz. The satellite is also observable in the paramagnetic metallic phase of the x = 0.055 sample. We associated the satellite with the V sites near Ti which are in the V $^{3 +}$ -like oxidation state but has different temperature dependence of the NMR shift from that of the host V site. The host d-spin susceptibility for x = 0.055 decreases below $\sim$ 60 K but remains finite in the low-temperature limit.

9 pages, 4 eps figures; corrected the author list

References in corpus (1)

Magnetic correlations and quantum criticality in the insulating antiferromagnetic, insulating spin liquid, renormalized Fermi liquid, and metallic antiferromagnetic phases of the Mott system V_2O_3

Microscopic Magnetic Properties of (V1−x​Tix​)2​O3​ near the Phase Boundary of the Metal-Insulator Transition

Abstract

References in corpus (1)

Cited by in corpus (2)

Microscopic Magnetic Properties of (V $_{1 - x}$ Ti $_{x}$ ) $_{2}$ O $_{3}$ near the Phase Boundary of the Metal-Insulator Transition