Contribution of spinons to thermal properties of glass-ceramics containing spin-chain compound SrCuO₂

Abstract

Materials with high thermal conductivity have attracted considerable attention for thermal management of electronic devices. Therefore, focusing on formability and anisotropic heat transfer, we fabricated glass-ceramics containing the spin-chain compound SrCuO₂ and demonstrated its high thermal conductivity in the previous work, where SrCuO₂ is known to exhibit high thermal conductivity owing to the presence of quasiparticles, i.e., spinons. In this study, we attempt to confirm the presence of spinons by analyzing temperature dependence of specific heat and investigate relationship between spinons and thermal properties.