Polar Metals: Principles and Prospects
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Author / Producer
Date
2023-07
Publication Type
Review Article
ETH Bibliography
yes
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Abstract
We review the class of materials known as polar metals, in which polarity and metallicity coexist in the same phase. While the notion of polar metals was first invoked more than 50 years ago, their practical realization has proved challenging since the itinerant carriers required for metallicity tend to screen any polarization. Huge progress has been made in the last decade, with many mechanisms for combining polarity and metallicity proposed and the first examples, LiOsO3and WTe2, identified experimentally. The availability of polar metallic samples has opened a new paradigm in polar metal research, with implications in the fields of topology, ferroelectricity, magnetoelectricity, spintronics, and superconductivity. Here, we review the principles and techniques that have been developed to design and engineer polar metals and describe some of their interesting properties, with a focus on the most promising directions for future work.
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Publication status
published
Editor
Book title
Journal / series
Volume
53
Pages / Article No.
53 - 79
Publisher
Annual Reviews
Event
Edition / version
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Geographic location
Date collected
Date created
Subject
Polar metals; Ferroelectrics; Polarization; Perovskites; Improper ferroelectricity
Organisational unit
03903 - Spaldin, Nicola A. / Spaldin, Nicola A.
Notes
Funding
810451 - Hidden, entangled and resonating orders/HERO (EC)