Reduction of ordered moment in strongly correlated LaTiO3+δ upon band filling

被引：33

作者：

Meijer, GI ^{[1
]}

Henggeler, W

Brown, J

Becker, OS

Bednorz, JG

Rossel, C

Wachter, P

机构：

[1] IBM Corp, Div Res, Zurich Res Lab, CH-8803 Ruschlikon, Switzerland

[2] ETH Zurich, Festkorperphys Lab, CH-8093 Zurich, Switzerland

[3] ETH Zurich, Neutron Scattering Lab, CH-8093 Zurich, Switzerland

[4] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[5] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

[6] Univ Zurich, Inst Anorgan Chem, CH-8057 Zurich, Switzerland

来源：

PHYSICAL REVIEW B | 1999年 / 59卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.59.11832

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Neutron diffraction and magnetic susceptibility experiments were performed on single crystals of the doped Mott-Hubbard insulator LaTiO3+delta. The magnetic properties of the three-dimensional correlated electron system were investigated upon hole doping. The size of the ordered moment of Ti3+ in the canted antiferromagnetically ordered phase reaches a maximum of 0.46(2) mu(B) for LaTiO3. Upon increasing the band filling, i.e., upon increasing the amount of nonstoichiometric oxygen delta from 0 to similar to 0.08, the ordered moment on Ti3+ is shown to decrease rapidly. The weak-ferromagnetic saturation moment of LaTiO3.07(1), on the verge of the insulator-to-metal transition, is reached via a series of steps in the magnetization curve. [S0163-1829(99)00318-5].

引用

页码：11832 / 11836

页数：5

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