arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2205.03044cond-mat.str-el
收藏

强关联半导体YbB12中电子相分离的证据

Evidence of electronic phase separation in the strongly correlated semiconductor YbB12

A. Azarevich, N. Bolotina, O. Khrykina, A. Bogach, E. Zhukova, B. Gorshunov, A. Melentev, Z. Bedran, A. Alyabyeva, M. Belyanchikov, V. Voronov, N. Sluchanko

摘要:

采用精密的X射线衍射技术、低温偏振THz -红外光谱和精确的磁输运测量对YbB_(12)高质量单畴晶体进行了研究。已经首次表明,这种具有金属-绝缘体过渡到具有金属费米表面的神秘电介质基态的原型强相关系统(Science 362,65-69(2018)和ibid 362,32-33(2018))实际上是电子相分离制度中的异质化合物。研究了在冷却过程中发现的动态电荷条纹的结构变化,得出了有利于YbB_(12)半导体基体中不同模式的非导电电子结构之间的交叉的结论。我们认为,条纹的发现YbB 12是根本的,阐明了异国情调的介电状态在近藤绝缘体的性质。

英文摘要:

The studies of high-quality single-domain crystals of YbB12 were carried out by the precise x-ray diffraction technique in combination with the low temperature polarized THz - infrared spectroscopy and accurate magnetotransport measurements. It has been shown for the first time that this archetypal strongly correlated system with a metal-insulator transition to a mysterious dielectric ground state with a metal Fermi surface (Science 362, 65-69 (2018) and ibid 362, 32-33 (2018)) is actually a heterogeneous compound in the regime of electronic phase separation. Changes in the configuration of the discovered dynamic charge stripes are investigated upon cooling, as a result, a conclusion is drawn in favor of a crossover between different patterns of the filamentary electronic structure penetrating the semiconducting matrix of YbB12. We argue that the discovery of stripes in YbB12 is fundamental, elucidating the nature of exotic dielectric state in Kondo insulators.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑