Anisotropic Transport Properties of CeRu$_2$Al$_{10}$

TL;DR

This study investigates the anisotropic electrical and thermal transport properties of CeRu₂Al₁₀ single crystals, revealing two-dimensional behavior and complex spin gap structures below a critical temperature.

Contribution

It provides detailed insights into the anisotropic transport behaviors and suggests a complex singlet ground state with a spin gap in CeRu₂Al₁₀.

Findings

Transport properties are highly anisotropic below T_0.

a- and c-axis behaviors are similar, b-axis differs.

Evidence suggests a complex spin gap structure.

Abstract

We studied the transport properties of CeRu_2Al_10 single crystals. All the transport properties show largely anisotropic behaviors below T_0. Those along the a- and c-axes show similar behaviors, but are different from those along the b-axis. This suggests that the system could be viewed as a two-dimensional system. The results of the thermal conductivity and thermoelectric power could be explained by assuming the singlet ground state below T_0. However, the ground state is not simple but has some kind of structure within a spin gap.