Fermi surface in the absence of a Fermi liquid in the Kondo insulator SmB6
Fermi surface in the absence of a Fermi liquid in the Kondo insulator SmB6
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DOI：
10.1038/nphys4295
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发表时间：
2018-02-01
期刊：
影响因子：
19.6
通讯作者：
Sebastian, Suchitra E.
中科院分区：
文献类型：
--
作者：
Hartstein, M.;Toews, W. H.;Sebastian, Suchitra E.
迄今为止，在没有传统费米液体的情况下寻找费米面几乎没有产生任何潜在的候选者。有前景的材料包括绝缘体-金属转变附近的自旋受阻莫特绝缘体，理论预测其中的费米面与中性低能激发相关。在这里，我们通过对靠近绝缘体-金属过渡的近藤绝缘体 SmB6 的实验研究，揭示了在没有费米液体的情况下实验实现费米表面的另一种途径。我们展示了低温下的实验特征（
The search for a Fermi surface in the absence of a conventional Fermi liquid has thus far yielded very few potential candidates. Among promising materials are spin-frustrated Mott insulators near the insulator-metal transition, where theory predicts a Fermi surface associated with neutral low-energy excitations. Here we reveal another route to experimentally realize a Fermi surface in the absence of a Fermi liquid by the experimental study of a Kondo insulator SmB6 positioned close to the insulato-rmetal transition. We present experimental signatures down to low temperatures (