Anomalous Hall effect at the spontaneously electron-doped polar surface of PdCoO2 ultrathin films
Anomalous Hall effect at the spontaneously electron-doped polar surface of PdCoO2 ultrathin films
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PdCoO2超薄膜自发电子掺杂极性表面的反常霍尔效应
DOI：
10.1103/physrevresearch.2.013282
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发表时间：
2020
影响因子：
4.2
通讯作者：
Tsukazaki A.
中科院分区：
文献类型：
--
作者：
Harada T.;Sugawara K.;Fujiwara K.;Kitamura M.;Ito S.;Nojima T.;Horiba K.;Kumigashira H.;Takahashi T.;Sato T.;Tsukazaki A.
我们揭示了一种半导体金属表面铁磁态的电输运。钯端表面的电子重建导致了类似斯通的铁磁态，这可能会导致中高导电电子之间出现与自旋相关的现象。制作了一系列的纳米厚的薄膜，我们检测到一个表面磁化驱动的异常霍尔效应，通过系统的厚度和终端依赖的测量。此外，我们还讨论了电子掺杂三角晶格中的有限磁矩可能引起额外的非常规霍尔电阻。
We revealed the electrical transport through surface ferromagnetic states of a nonmagnetic metal. Electronic reconstruction at the Pd-terminated surface ofinduces Stoner-like ferromagnetic states, which could lead to spin-related phenomena among the highly conducting electrons in. Fabricating a series of nanometer-thickthin films, we detected a surface-magnetization-driven anomalous Hall effect via systematic thickness- and termination-dependent measurements. Besides, we discuss that finite magnetic moments in electron dopedtriangular lattices may have given rise to additional unconventional Hall resistance.