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We establish theoretically that in nonmagnetic semiconducting bilayer or multilayer thin film systems rolled up into compact quasi-one-dimensional nanoarchitectures, the ballistic magnetoresistance is very anisotropic: conductances depend…

Mesoscale and Nanoscale Physics · Physics 2014-12-10 Ching-Hao Chang , Jeroen van den Brink , Carmine Ortix

The influence has been studied of the ionization laser polarization on the effective temperature of an ultracold electron source, which is based on near-threshold photoionization. This source is capable of producing both high-intensity and…

Atomic Physics · Physics 2013-12-24 W. J. Engelen , D. J. Bakker , O. J. Luiten , E. J. D. Vredenbregt

A report of progress in spintronics-related works involving group III nitrides is given emphasizing contradictory opinions concerning basics characteristics of these materials. The actual position of magnetic impurities in the GaN lattice…

Materials Science · Physics 2015-06-24 Tomasz Dietl

We investigate theoretically the electronic structure of graphene and boron nitride (BN) lateral heterostructures, which were fabricated in recent experiments. The first-principles density functional calculation demonstrates that a huge…

Mesoscale and Nanoscale Physics · Physics 2016-07-04 Dong Zhang , Maosheng Miao , Fuhua Yang , Haiqing Lin , Kai Chang

The dielectric properties of molecules or nanostructures are usually modified in a complex manner, when assembled into a condensed phase. We propose a first-principles method to compute polarizabilities of sub-entities of solids and…

Chemical Physics · Physics 2018-09-10 Ding Pan , Marco Govoni , Giulia Galli

The magnetic properties of anisotropic films have been studied using 3D-neutron polarization analysis. The experimental facts refer to essential distinction of the sample states, magnetized in opposite directions. For an explanation of…

Condensed Matter · Physics 2007-05-23 A. V. Kovalev , L. A. Akselrod

Interest in inorganic ternary nitride materials has grown rapidly over the past few decades, as their diversity of chemistries and structures make them appealing for a variety of applications. Due to synthetic challenges posed by the…

For advanced applications in modern industry it is very important to reduce the volume of ferroelectric nanoparticles without serious deterioration of their polar properties. In many practically important cases fixed volume (rather than…

Because final properties of nanoscale polymeric structures are largely determined by the solid-state microstructure of the confined polymer, it is imperative not only to understand how the microstructure of polymers develops under nanoscale…

When two-dimensional crystals are brought into close proximity, their interaction results in strong reconstruction of electronic spectrum and local crystal structure. Such reconstruction strongly depends on the twist angle between the two…

Mesoscale and Nanoscale Physics · Physics 2025-10-27 C. R. Woods , P. Ares , H. Nevison-Andrews , M. J. Holwill , R. Fabregas , F. Guinea , A. K. Geim , K. S. Novoselov , N. R. Walet , L. Fumagalli

This study explores the world of across-layer sliding ferroelectricity in multilayer hexagonal boron nitride (hBN) and gallium nitride (hGaN), aiming to control out-of-plane polarization. By investigating the effects of sliding single or…

Materials Science · Physics 2025-04-08 Sanber Vizcaya , Felipe Perez Riffo , Juan M. Florez , Eric Súarez Morell

A hybrid system composed of an isotropic nanoparticle and a semiconductor heterostructure with a quantum well has been considered. The nanoparticle is supposed to be polarizable in an external electric field. A theoretical model of the…

Mesoscale and Nanoscale Physics · Physics 2012-06-22 V. A. Kochelap , S. M. Kukhtaruk

We present a detailed study of the structural behavior and polarization reversal mechanism in phase III of KNO$_3$, an unusual ferroelectric material in which the nitrate groups rotate during polarization reversal. This material was one of…

Materials Science · Physics 2009-12-22 Oswaldo Dieguez , David Vanderbilt

We have proposed the polarization rotation theory to understand the underlying physics of the large piezoelectric effect in ferroelectric crystals by referring to the coherent rotation model in ferromagnetism. When both the electric field…

Materials Science · Physics 2015-06-05 Hui Zhang

Interfacial magnetism stimulates the discovery of giant magnetoresistance and spin-orbital coupling across the heterointerfaces, facilitating the intimate correlation between spin transport and complex magnetic structures. Over decades,…

We discuss the information that can be deduced from a measurement of particle (hyperon or vector meson) polarization in ultrarelativistic nuclear collisions. We describe the sensitivity of polarization to initial conditions, hydrodynamic…

Nuclear Theory · Physics 2008-11-26 Barbara Betz , Miklos Gyulassy , Giorgio Torrieri

We revisit the electromagnetic heat transfer between a metallic nanoparticle and a metallic semi-infinite substrate, commonly studied using the electric dipole approximation. For infrared and microwave frequencies, we find that the magnetic…

Other Condensed Matter · Physics 2008-06-10 Pierre-Olivier Chapuis , Marine Laroche , Sebastian Volz , Jean-Jacques Greffet

Circular dichroism is widely used for characterizing organic and biological materials, but measurements at a single molecule level are challenging because differences in absorption for opposite helicities are small. Here we show that…

Mesoscale and Nanoscale Physics · Physics 2014-01-23 A. Yokoyama , M. Yoshida , A. Ishii , Y. K. Kato

The design of the interfacial bondings at metal-oxide interfaces yields exciting new phenomena and can be a route to sustain, and even promote, ferroelectricity at the nanoscale. We study the impact of these interfaces on the nature of the…

Materials Science · Physics 2014-08-12 A. Cano , A. P. Levanyuk

Neodymium nickelate, NdNiO3 attracts attraction due to the simultaneous occurrence of several phase transitions around the same temperature. The electronic properties of NdNiO3 are extremely complex as structural distortion, electron…

Materials Science · Physics 2022-09-07 Raktima Basu , Reshma Kumawat , Mrinmay Sahu , Abu Bakkar Miah , Partha Mitra , Goutam Dev Mukherjee