论文标题
在单轴拉伸应变下，在围质绝缘子SMB6的导热率中的残留线性项的增强
Enhancement of the Residual Linear Term in the Thermal Conductivity of Kondo Insulator SmB6 under Uniaxial Tensile Strain
论文作者
论文摘要
最近对近托绝缘子SMB6进行的实验表明，散装激发可能是费米子。这将导致导热率中的残留线性项，而在实验中未普遍观察到。为了解决这个谜团，我们引入了一种新型的对称几何形状，用于在应变下进行热传输测量。在标称零应变的磁通量生长的SMB6中发现了磁性非依赖性残留线性项，它们在拉伸应变下生长，已知可以改变SM价。 SM价的生长依赖性差异很小，可能会解释观察到的差异。我们讨论了SMB6中批量激发理论的限制。
Recent experiments on Kondo insulator SmB6 have revealed bulk excitations that could be Fermions without charge. This would lead to a residual linear term in the thermal conductivity that was not observed universally in experiments. To solve this mystery, we introduce a novel symmetric geometry for performing thermal transport measurements under strains. Magnetic-field-independent residual linear terms were found in flux-grown SmB6 at nominal zero strain, and they grew under a tensile strain, which is known to modify Sm valence. A small growth-dependent difference in the Sm valence might explain the observed discrepancies. We discuss the constraints on the theories of bulk excitations in SmB6.
