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 …

The possibility of reconciliation between seemingly mutually exclusive properties in one
system can not only lead to theoretical breakthroughs but also potential novel applications …

Ferroelectric domain wall memories have been proposed as a promising candidate for
nonvolatile memories, given their intriguing advantages including low energy consumption …

The colossal permittivity of electronic conductors (specifically metals and carbons) is
reviewed. Relative permittivity (even 10 8) was predicted theoretically by Jonscher in 1999 …

Piezopermittivity refers to the reversible change of the electric permittivity (the main material
property that describes the dielectric behavior) with the elastic strain. This paper addresses …

Continuous carbon fiber carbon-matrix (C/C) and polymer-matrix (CFRP) structural
composites without poling are electrets. Their DC electric field E (hence the volumetric …

The dynamics of direct-current-induced electric polarization/depolarization of a conductive
material (graphite) are studied. Forward-current polarization and reverse-current …

Abstract Absorption-dominant radio-wave (0.2–2.0 GHz) attenuation loss is comparatively
reported for materials of high electrical conductivity, namely metals (aluminum and steel) …

Polar metals, a family of materials with exclusive but coexisting electric polarization and
metallicity, have attracted plenty of studies recently. Experimentally, how these two exclusive …

Materials with reduced dimensions have been shown to host a wide variety of exotic
properties and novel quantum states that often defy textbook wisdom. Polarization switching …