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Positive magnetoresistance (PMR) of a silicon MOSFET in parallel magnetic fields B has been measured at high electron densities n >> n_c where n_c is the critical density of the metal-insulator transition (MIT). It turns out that the…

强关联电子 · 物理学 2012-02-02 I. Shlimak , A. Butenko , D. I. Golosov , K. -J. Friedland , S. V. Kravchenko

Chiral magnetic effect is a quantum phenomenon that is breaking of chiral symmetry of relativistic Weyl fermions by quantum fluctuation under paralleled electric field E and magnetic field B. Intuitively, Weyl fermions with different…

材料科学 · 物理学 2018-05-28 Yang-Yang Lv , Xiao Li , Bin Pang , Y. B. Chen , Shu-Hua Yao , Jian Zhou , Yan-Feng Chen

We study the effect of energy loss on charm and bottom quarks in high-energy heavy-ion collisions including hadronization, longitudinal expansion and partial thermalization. We consider in detail the detector geometry and single lepton…

高能物理 - 唯象学 · 物理学 2014-11-17 Z. Lin , R. Vogt

We compute the chiral magnetic effect (CME) in a cylindrical region coaxial with the external magnetic field. As the boundary condition we require vanishing of the radial component of the electric current on the cylinder side wall. We find…

高能物理 - 唯象学 · 物理学 2023-09-13 Matteo Buzzegoli , Kirill Tuchin

Electric-field control of magnetization promises to substantially enhance the energy efficiency of device applications ranging from data storage to solid-state cooling. However, the intrinsic linear magnetoelectric effect is typically small…

材料科学 · 物理学 2017-08-09 Jan Zemen , Zsolt Gercsi , Karl G. Sandeman

The effects of surface curvature on the motion of electrons in a mesoscopic two-dimensional ring on a cone in the presence of external magnetic fields are examined. The approach follows the thin-layer quantization procedure, which gives…

介观与纳米尺度物理 · 物理学 2019-11-04 Luís Fernando C. Pereira , Fabiano M. Andrade , Cleverson Filgueiras , Edilberto O. Silva

Relativistic heavy-ion collisions provide an ideal environment to study the emergent phenomena in quantum chromodynamics (QCD). The chiral magnetic effect (CME) is one of the most interesting, arising from the topological charge…

核实验 · 物理学 2018-05-11 Jie Zhao

The chiral magnetic effect (CME) refers to generation of the electric current along a magnetic field in a chirally imbalanced system of quarks. The latter is predicted by quantum chromodynamics to arise from quark interaction with…

核实验 · 物理学 2025-07-22 Yicheng Feng , Sergei A. Voloshin , Fuqiang Wang

The Chiral Magnetic Effect (CME) is a phenomenon by which an electric current develops in the direction of a magnetic field applied to a material. Recent theoretical research suggests that the CME can be observed in thermal equilibrium…

介观与纳米尺度物理 · 物理学 2017-12-18 Artem Ivashko , Vadim Cheianov

We present a comprehensive study on the magnetic structure, dynamics, and phase evolution in the single-phase double perovskite $La_2CoMnO_6$. The mixed valence state due to oxygen deficiency is verified by X-ray photoelectron spectroscopy,…

We describe a new experimental setup for the detection of magnetic circular dichroism with fast electrons (EMCD). As compared to earlier findings the signal is an order of magnitude higher, while the probed area could be significantly…

The ferromagnetic properties of epitaxial La$_{0.5}$Sr$_{0.5}$CoO$_3$ thin films have been studied. The magnetic transition is affected by both strain and finite thickness. We have used a series of films of different thickness and on…

材料科学 · 物理学 2009-11-13 Changkun Xie , J. I. Budnick , B. O. Wells , J. C. Woicik

We report a detailed study of the magnetocaloric effect in heterostructures of La2NiMnO6 and La2/3Sr1/3MnO3. The shape, width and magnitude of the temperature dependence of the magnetic entropy change ($\Delta S_{m}$) for these multilayer…

应用物理 · 物理学 2022-11-08 Mohammad Abbasi Eskandari , Seyedeh Sara Ghotb , Mohamed balli , Patrick Fournier

The latest experimental studies related to the search for the Chiral Magnetic Effect (CME) in Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV recorded with the ALICE detector at the Large Hadron Collider (LHC) are presented.…

核实验 · 物理学 2026-02-27 ALICE Collaboration

We report on the results of investigation the conductivity and magnetoresistance (MR) temperature dependencies for the two strained multilayer p-type Ge/Ge_{1-x}Si_x heterostructures. The usual logarithmic temperature dependencies for zero…

介观与纳米尺度物理 · 物理学 2007-05-23 Yu. G. Arapov , G. I. Harus , V. N. Neverov , A. T. Lonchakov , N. G. Shelushinina , M. V. Yakunin

We use a Green's function method with Random Phase Approximation to show how magnetic correlations may affect electric polarization in multiferroic materials with magnetic-exchange-type magnetoelectric coupling. We use a model spin 1/2…

材料科学 · 物理学 2010-02-17 K. L. Livesey , R. L. Stamps

The ordered double perovskites Sr2CrOsO6 and Ca2CrOsO6 have been synthesized and characterized with neutron powder diffraction, electrical transport measurements, and high field magnetization experiments. Sr2CrOsO6 and Ca2CrOsO6 crystallize…

We report our observation of a correlation between the extrinsic electroresistance (EER) and magnetoresistance (EMR) via grain size in fine-grained La0.7Ca0.3MnO3. The nature of dependence of EER and EMR on grain size (~0.2-1.0 micron)…

强关联电子 · 物理学 2010-08-30 P. Sujatha Devi , A. Kumar , Dipten Bhattacharya , Shilpi Karmakar , B. K. Chaudhuri

We compute the electric-current susceptibility \chi of hot quark-gluon matter in an external magnetic field B. The difference between the susceptibilities measured in the directions parallel and perpendicular to the magnetic field is…

高能物理 - 唯象学 · 物理学 2014-11-20 Kenji Fukushima , Dmitri E. Kharzeev , Harmen J. Warringa

We have measured Re 5d spin and orbital magnetic moments in the ferrimagnetic double perovskite Sr2CrReO6 by X-ray magnetic circular dichroism at the L_{2,3} edges. In fair agreement with recent band-structure calculations [Vaitheeswaran…

材料科学 · 物理学 2009-11-11 P. Majewski , S. Gepraegs , O. Sanganas , M. Opel , R. Gross , F. Wilhelm , A. Rogalev , L. Alff