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We have investigated crystalline magnetic anisotropy in the electric field (EF) for the Fe-Pt surface which have a large perpendicular anisotropy, by means of the first-principles approach. The anisotropy is reduced linearly with respect to…

Materials Science · Physics 2015-05-13 Masahito Tsujikawa , Tatsuki Oda

By introducing Dirac ?-function in superhigh magnetic field, we deduce a general formula for pressure of degenerate and relativistic electrons, Pe, which is suitable for superhigh magnetic fields, discuss the quantization of Landau levels…

High Energy Physics - Phenomenology · Physics 2015-11-16 Z. F. Gao , N. Wang , Y. Xu , H. Shan , X. D. Li

We propose a model of a relativistic string formed by a scalar complex field, acting as electromagnetic field source. An axiosymmetric solutions of the stationary equations for the scalar and electromagnetic fields are found numerically.…

High Energy Physics - Theory · Physics 2007-05-23 E. P. Likhtman

The numerical value of the fine-structure constant generally leads to small isospin-breaking effects due to electromagnetism in QCD. This smallness complicates determining isospin breaking from lattice QCD computations that include…

High Energy Physics - Lattice · Physics 2017-06-07 Matthew E. Matzelle , Brian C. Tiburzi

Motivated by recent interest in understanding properties of strongly magnetized matter, we study the dynamical electron mass generated through approximate chiral symmetry breaking in QED in a strong magnetic field. We reliably calculate the…

High Energy Physics - Phenomenology · Physics 2008-11-26 S. -Y. Wang

We investigate the effects of strong magnetic fields on the QCD phase structure at vanishing density by solving the gluon and quark gap equations, and by studying the dynamics of the quark scattering with the four-fermi coupling. The chiral…

High Energy Physics - Phenomenology · Physics 2015-05-14 Niklas Mueller , Jan M. Pawlowski

We investigate the effect of a strong magnetic field on dynamical chiral symmetry breaking in quenched and unquenched QCD. To this end we apply the Ritus formalism to the coupled set of (truncated) Dyson-Schwinger equations for the quark…

High Energy Physics - Phenomenology · Physics 2014-06-11 Niklas Mueller , Jacqueline A. Bonnet , Christian S. Fischer

We show that the sign of magnetic anisotropy energy in quantum Hall ferromagnets is determined by a competition between electrostatic and exchange energies. Easy-axis ferromagnets tend to occur when Landau levels whose states have similar…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 T. Jungwirth , S. P. Shukla , L. Smrcka , M. Shayegan , A. H. MacDonald

In present paper we confirm our previous result [5] that the Planck constant is adiabatic invariant of electromagnetic field propagating on the adiabatically changed Finslerian manifold. Direct calculation from cosmological parameters gives…

General Physics · Physics 2024-05-21 Anton A. Lipovka

The mechanical effects in finite two-dimensional electron systems (quantum dots or droplets) in a strong perpendicular magnetic field are studied. It is shown that, due to asymmetry of the cyclotron dynamics, an additional in-plane electric…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Lucjan Jacak , Jurij Krasnyj , Dorota Jacak , Arkadiusz Wojs

We calculate magnetic anisotropy energy of Fe and Ni by taking into account the effects of strong electronic correlations, spin-orbit coupling, and non-collinearity of intra-atomic magnetization. The LDA+U method is used and its equivalence…

Materials Science · Physics 2007-05-23 I. Yang , S. Y. Savrasov , G. Kotliar

The dependence of the QCD coupling constant with a strong magnetic field and the implications for the critical temperature of the chiral phase transition are investigated. It is found that the coupling constant becomes anisotropic in a…

Nuclear Theory · Physics 2015-03-11 E. J. Ferrer , V. de la Incera , X. J. Wen

Astronomical observations are suggesting that the fine structure constant varies cosmologically. We present an analysis on the consequences that these variations might induce on the electromagnetic field as a whole. We show that under these…

Astrophysics · Physics 2007-05-23 J. L. Martinez-Ledesma , S. Mendoza

The effect of a magnetic field on the energy spectrum and on the wave functions of an electron in spherical nano-structures such as single quantum dot and spherical layer is investigated. It is shown that the magnetic field removes the…

Mesoscale and Nanoscale Physics · Physics 2014-03-10 V. Holovatsky , O. Voitsekhivska , I. Bernik

Within the framework of Dyson-Schwinger equations(DSEs) and by means of the Multiple Reflection Expansion approximation, we study the finite volume effects of the constituent quark mass in a strong external magnetic field. Since the…

High Energy Physics - Phenomenology · Physics 2025-08-19 Li-Juan Zhou , De-Xian Wei , Zhong-Yi Liu , Hong-Wei Zhong

We explore the effect of the magnetic field on the QCD phase transition through AdS/CFT correspondence. By introducing an anisotropic magnetic field in the Einstein-Maxwell-Scalar system, a family of analytic solutions is obtained by the…

High Energy Physics - Theory · Physics 2020-05-05 Song He , Yi Yang , Pei-Hung Yuan

The new challenges posed by the need of finding strong rare-earth free magnets demand methods that can predict magnetization and magnetocrystalline anisotropy energy (MAE). We argue that correlated electron effects, which are normally…

We show, either quantum mechanically or classically, that the variation of the effective mass induced in a charged particle by the presence of an ultra-strong electromagnetic field may lead to observable consequences. In particular, we…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Conte , M. Palazzi , M. Pusterla , R. Turolla

We show that the chiral-symmetry-broken phase of massless QED in the presence of a magnetic field exhibits strong paraelectricity. A large anisotropic electric susceptibility develops in the infrared region, where most of the fermions are…

High Energy Physics - Phenomenology · Physics 2011-08-17 Efrain J. Ferrer , Vivian de la Incera , Angel Sanchez

It is shown that in non-perturbative massless QED an anomalous magnetic moment is dynamically induced by an applied magnetic field. The induced magnetic moment produces a Zeeman splitting for electrons in Landau levels higher than $l=0$.…

High Energy Physics - Phenomenology · Physics 2009-02-27 Efrain J. Ferrer , Vivian de la Incera
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