Anisotropy of conducting p states and 11B nuclear spin-lattice relaxation in Mg1-xAlxB2 -: art. no. 132506

被引：11

作者：

Belashchenko, KD ^{[1
]}

Antropov, VP

Rashkeev, SN

机构：

[1] Ames Lab, Ames, IA 50011 USA

[2] Vanderbilt Univ, Nashville, TN 37235 USA

来源：

PHYSICAL REVIEW B | 2001年 / 64卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.64.132506

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We calculated the nuclear spin-lattice relaxation rate in the Mg1-xAlxB2 system and found that the orbital relaxation mechanism dominates over the dipolar and Fermi-contact mechanisms in MgB2 whereas in AlB2 due to a smaller density of states and strong anisotropy of boron p orbitals the relaxation is completely determined by Fermi-contact interaction. The results for MgB2 are compared with existing experimental data. To validate the theory, nuclear resonance experiments for the studied diboride alloy system are needed.

引用

页数：3

共 15 条

[1] Superconductivity of MgB2: Covalent bonds driven metallic [J].

An, J.M., 2001, American Institute of Physics Inc. (86)

[2] A THEORETICAL-STUDY OF THE NUCLEAR-SPIN-LATTICE RELAXATIONS OF HCP TRANSITION-METALS [J].