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Calculations for two electrons in an elliptic quantum dot, using symmetry breaking at the unrestricted Hartree-Fock level and subsequent restoration of the broken parity via projection techniques, show that the electrons can localize and…

介观与纳米尺度物理 · 物理学 2007-05-23 Constantine Yannouleas , Uzi Landman

The transport properties of interacting electrons for which the spin degree of freedom is taken into account are numerically studied for small two dimensional diffusive clusters. On-site electron-electron interactions tend to delocalize the…

介观与纳米尺度物理 · 物理学 2009-11-07 Richard Berkovits , Jan W. Kantelhardt

It is shown that mechanical twinning in smectic crystals is possible. The structure of the boundary of twins for a small disorientation of crystallites is determined. The periodic twin structure, which should appear at the tension of the…

软凝聚态物质 · 物理学 2013-04-29 V. I. Marchenko

Magnetic monopoles --- particles that behave as isolated north or south magnetic poles --- have been the subject of speculation since the first detailed observations of magnetism several hundred years ago. Numerous theoretical…

量子气体 · 物理学 2014-08-15 M. W. Ray , E. Ruokokoski , S. Kandel , M. Möttönen , D. S. Hall

Atomically-thin magnetic crystals have been recently isolated experimentally, greatly expanding the family of two-dimensional materials. In this Article we present an extensive comparative analysis of the electronic and magnetic properties…

强关联电子 · 物理学 2019-09-06 Guido Menichetti , Matteo Calandra , Marco Polini

A plethora of unconventional localization phenomena and fractal features of linear spectrum observed in quasiperiodic structures have been accompanied by a long-standing quest for the geometrical elements and structures that permit tilings…

The anti-symmetric and anisotropic symmetric exchange interactions between two magnetic dipole moments - responsible for intriguing magnetic textures (e.g., magnetic skyrmions) - have been discovered since last century, while their electric…

材料科学 · 物理学 2024-04-19 Longju Yu , Hong Jian Zhao , Peng Chen , Laurent Bellaiche , Yanming Ma

We investigate the factuality of the hypothetical magnetic monopole and the nature of the static magnetic field. It is shown from many aspects that the concept of the massive magnetic monopoles clearly is physically untrue. We argue that…

综合物理 · 物理学 2008-12-12 Xiuqing Huang

Recently published paper [PRL 114, 147701 (2015)] contains several misleading statements and misinterpretations of known facts. The main massage of the paper [PRL 114, 147701 (2015)] is as follows: "We have shown that explicit symmetry…

光学 · 物理学 2015-10-28 C. Simovski , A. Miroshnichenko , P. Belov , A. Krasnok

We establish the existence of fixed points for certain gauge theories candidate to be magnetic duals of QCD with one adjoint Weyl fermion. In the perturbative regime of the magnetic theory the existence of a very large number of fixed…

高能物理 - 理论 · 物理学 2011-05-10 Oleg Antipin , Matin Mojaza , Claudio Pica , Francesco Sannino

Ferroelectricity is commonly understood in terms of dynamical charges, which represent the dipole moments generated by atomic displacements or the forces induced by electric fields. In ferroelectrics with a high degree of symmetry, the…

材料科学 · 物理学 2024-12-02 Daniel Bennett , Philippe Ghosez

The moir\'e superlattices formed by stacking 2D semiconducting transition metal dichalcogenides (TMDs) with twisting angle or lattice mismatch have provided a versatile platform with unprecedented tunability for exploring many frontier…

介观与纳米尺度物理 · 物理学 2025-08-07 Dawei Zhai , Hongyi Yu , Wang Yao

We study the electronic and magnetic properties of monolayer Fe$_3$GeTe$_2$ within the DFT+DMFT approach in the paramagnetic phase. We argue that this compound is sufficiently far from the local magnetic moment limit, demonstrating…

强关联电子 · 物理学 2026-03-13 A. A. Katanin , A. N. Rudenko , D. I. Badrtdinov , M. I. Katsnelson

We present the first observations of cylindrical symmetry breaking in highly excited diamagnetic hydrogen with a small crossed electric field, and we give a semiclassical interpretation of this effect. As the small perpendicular electric…

原子物理 · 物理学 2009-10-30 C. Neumann , R. Ubert , S. Freund , E. Floethmann , B. Sheehy , K. H. Welge , M. R. Haggerty , J. B. Delos

Weyl semimetals (WSM) are a new class of topological materials that exhibit a bulk Hall effect due to time-reversal symmetry breaking, as well as a chiral magnetic effect due to inversion symmetry breaking. These unusual electromagnetic…

高能物理 - 理论 · 物理学 2019-05-01 A. Martín-Ruiz , M. Cambiaso , L. F. Urrutia

Understanding of the intimate cross-coupling between electric and magnetic degrees of freedom in solids usually requires sophisticated models and time-consuming calculation methods. Instead of macroscopic symmetry analysis, we present a…

材料科学 · 物理学 2022-02-02 Maocai Pi , Xifan Xu , Mingquan He , Yisheng Chai

The paper presents the author view on spin-rooted properties of graphene supported by numerous experimental and calculation evidences. Dirac fermions of crystalline graphene and local spins of graphene molecules are suggested to meet a…

材料科学 · 物理学 2016-12-28 Elena F. Sheka

This is a theoretical review of exploration of new physics beyond the Standard Model (SM) in electric dipole moment (EDM) in elementary particles, atoms, and molecule. EDM is a very important CP violating phenomenon and sensitive to new…

高能物理 - 唯象学 · 物理学 2015-06-03 Takeshi Fukuyama

An exact calculation of the local electric field ${\bf E}({\bf r})$ is described for the case of a time dependent point electric dipole ${\bf p}e^{-i\omega t}$ in the top layer of an $\epsilon_2$, $\epsilon_1$, $\epsilon_2$ three parallel…

光学 · 物理学 2016-03-22 Asaf Farhi , David J. Bergman

In electrochemical systems, the structure of electrical double layers (EDLs) near electrode surfaces is crucial for energy conversion and storage functions. While the electrodes in real-world systems are usually heterogeneous, to date the…

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