Electronically polarized systems are physical systems in which the electronic charge distribution is displaced relative to the nuclei, producing a net electric polarization that can be static, induced, or dynamic. This polarization arises from external electric fields, internal crystal fields, broken inversion symmetry, interfaces, or collective electronic instabilities, and is described microscopically by changes in electronic wavefunctions and macroscopically by a polarization vector field. Such systems include dielectrics, ferroelectrics, polar semiconductors, and heterostructures where bound or itinerant electrons respond anisotropically, strongly influencing dielectric response, excitations, screening, charge transport, and nonlinear optical properties central to condensed-matter and materials physics.
When we communicate with others over wireless networks, information is sent to data centers where it is collected, stored, processed, and distributed. As computational energy usage continues to grow, it is on pace to potentially ...
Nanomaterials
Jun 9, 2023
0
147
Two-dimensional (2D) perovskite thin films possess diverse tunability, excellent optoelectronic properties and superior long-term stability, which are of great significance for high performance of perovskite solar cells. ...
Nanomaterials
May 22, 2023
0
84
Two-dimensional (2D) ferroelectrics, planar materials that have a spontaneous and reversible electric polarization, are extremely rare and yet could be extremely advantageous for the development of new nanoelectronics. Due ...
Researchers at the Institute for Future Materials and Systems at Nagoya University in Japan have successfully synthesized barium titanate (BaTiO3) nanosheets with a thickness of 1.8 nanometers, the thinnest thickness ever ...
Nanomaterials
Apr 20, 2023
0
161
National University of Singapore (NUS) physicists have discovered a novel form of ferroelectricity in a single-element bismuth monolayer that can produce regular and reversible dipole moments for future applications of non-volatile ...
Nanophysics
Apr 6, 2023
0
167
Rice University materials scientist Boris Yakobson and collaborators uncovered a property of ferroelectric 2D materials that could be exploited as a feature in future devices.
Nanomaterials
Mar 6, 2023
0
270
Professor Juhyuk Lee of the Department of Energy Engineering has developed an elastic triboelectric generator that can be used in the daily lives of frequent movers. The cause of the output reduction of the elastic triboelectric ...
Bio & Medicine
Feb 15, 2023
0
144
Antiferroelectric materials have electrical properties that make them advantageous for use in high-density energy storage applications. Researchers have now discovered a size threshold beyond which antiferroelectrics lose ...
Nanomaterials
Feb 9, 2023
0
174
A UNSW paper published recently in Nature Reviews Materials presents an exciting overview of the emerging field of 2D ferroelectric materials with layered van der Waals crystal structures, a novel class of low-dimensional ...
Nanomaterials
Oct 27, 2022
0
141
A team of researchers led by Rensselaer Polytechnic Institute's Edwin Fohtung, associate professor of materials science and engineering, has combined expertise in mathematics and condensed matter physics with technological ...
Nanophysics
Oct 24, 2022
0
156
