Analogy between three-dimensional helimagnetic metals and two-dimensional nonmagnetic metals: Transport in the weakly disordered regime

作者：Kirkpatrick T R^*; Belitz D; Saha Ronojoy

来源：Physical Review B, 2008, 77(18): 180405.

DOI：10.1103/PhysRevB.77.180405

We present a quasiparticle model that allows for a simple description of the electronic properties of metallic helimagnets. For weak quenched disorder, we find a leading linear temperature dependence of the electrical conductivity for three-dimensional materials. This is reminiscent of the behavior of nonmagnetic two-dimensional (2D) systems and reflects a general tendency of certain properties of bulk helimagnets to appear effectively 2D. The sign of the effect is opposite to that in nonmagnetic 2D materials. These surprising predictions should be observable in weak helimagnets.

• 出版日期2008-5
• 单位中国科学院理论物理研究所