Thin-film growth and application prospects of metallic delafossites
Thin-film growth and application prospects of metallic delafossites
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DOI：
10.1016/j.mtadv.2021.100146
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发表时间：
2021-06-23
影响因子：
10
通讯作者：
Harada, T.
中科院分区：
文献类型：
--
作者：
Harada, T.
金属铜铁矿是一种迷人的层状材料，具有极高的导电性和表面极性。高导电性是由稳定在层状氧化物框架中的二维Pd和Pt导电层产生。本文将对金属铜铁矿薄膜的生长现状和应用前景进行综述。薄膜生长将使金属铜铁矿和其他化合物的异质结构的制造成为可能。在这种异质结构中，金属铜铁矿的表面极性可以发挥重要作用，这是由于它们具有带正电荷和带负电荷的层的层状晶体结构。表面极性不仅影响电子的运动，而且诱导自旋相关的表面态。极性表面和界面可以通过制造金属铜铁矿和功能材料（如半导体和磁体）的异质结构来用于器件功能。量子和介观器件是金属铜铁矿的另一个有前途的应用，它们利用了大块单晶中发现的非常长的平均自由程和电子相干长度。对于这些应用，需要具有优异质量的薄膜，这对薄膜生长是一个挑战。金属铜铁矿薄膜的研究仍处于起步阶段，这篇综述可以传授知识，可以导致各种材料的异质结构的创新。(c)2021年，任作者。由爱思唯尔有限公司出版。这是一篇在CC BY-NC-ND许可证下的开放获取文章（http：//creativecommons.org/licenses/by-nc-nd/4.0/）。
Metallic delafossites are fascinating layered materials with exceptionally high electrical conductivity and surface polarity. The high conductivity is produced by the two-dimensional Pd and Pt conductive layers stabilized in a layered oxide framework. In this review, I will discuss the current status of thin-film growth and application prospects of metallic delafossites. Thin-film growth will enable the fabrication of the heterostructures of metallic delafossites and other compounds. In such heterostructures, the surface polarity of metallic delafossites can play a significant role, owing to their layered crystal structure with positively and negatively charged layers. Surface polarity not only influences on the movement of electrons but also induces spin-dependent surface states. Polar surfaces and interfaces can be used for device functionality by making the heterostructures of metallic delafossites and functional materials such as semiconductors and magnets. Quantum and mesoscopic devices are another promising application of metallic delafossites, which exploit the very long mean free path and electron coherence length found in bulk single crystals. For such applications, thin films with exceptional quality are needed, which is a challenge for thin-film growth. The research on metallic delafossite thin films is still in its infancy, and this review can impart knowledge that can lead to innovations on heterostructures with various materials. (c) 2021 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).