Thermoelectric transport across the metamagnetic transition of CeRu2Si2

被引：26

作者：

Pfau, Heike ^{[1
]}

Daou, Ramzy ^{[1
]}

Brando, Manuel ^{[1
]}

Steglich, Frank ^{[1
]}

机构：

[1] Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 03期

关键词：

ZERO-TEMPERATURE LIMIT; SCATTERING; SR3RU2O7; HEAT;

D O I：

10.1103/PhysRevB.85.035127

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have measured the thermopower across the metamagnetic transition of the heavy fermion compound CeRu2Si2 at temperatures down to 0.1 K and magnetic fields up to 11.5 T. We find a large negative enhancement of the thermopower on crossing the metamagnetic field, as well as a sudden change in slope. We argue that this is consistent with the Zeeman-driven deformation of the Fermi surface through a topological transition. The field dependence of the thermopower highlights the discrepancy between thermodynamic and transport properties across the metamagnetic transition.

引用

页数：5

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