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Electronic structure analysis is performed to study the properties of several Pb-containing 3d-intermetallics. Our study reveals that binary metastable Co3Pb and Fe3Pb intermetallic compounds exhibit very attractive intrinsic magnetic…

Materials Science · Physics 2024-08-20 Weiyi Xia , Cai-Zhuang Wang , Vladimir Antropov

In this work, we study the effects of mechanical anisotropy in a 2D optomechanical crystal geometry. We fabricate and measure devices with different orientations, showing the dependence of the mechanical spectrum and the optomechanical…

It is shown that the spin-orbit coupling due to structure inversion asymmetry leads to a characteristic anisotropy in the magnetoconductance of two-dimensional metals. Relevance for recent experiments is discussed.

Mesoscale and Nanoscale Physics · Physics 2009-11-07 R. Raimondi , M. Leadbeater , P. Schwab , E. Caroti , C. Castellani

Rare earth/transition metal (RE/TM) multilayers with perpendicular magnetic anisotropy are key ingredients for the development of spintronic applications. Their compensation temperature depends on the ratio of the thicknesses of rare earth…

Ferromagnetic resonance (FMR) study of magnetic anisotropy is presented for thin layers of IV-VI diluted magnetic semiconductor Ge1-xMn xTe with x=0.14 grown by molecular beam epitaxy (MBE) on KCl (001) substrate with a thin PbTe buffer.…

Moir\'e materials provide a highly tunable platform in which novel electronic phenomena can emerge. We study strained moir\'e materials in a uniform magnetic field and predict highly anisotropic electrical conductivity which switches…

Mesoscale and Nanoscale Physics · Physics 2024-06-21 Nisarga Paul , Philip J. D. Crowley , Liang Fu

High-quality single crystal of Ca0.8La0.2Fe0.98Co0.02As2 has been successfully synthesized using a self-flux method. The magnetization measurement reveals a second peak effect and high critical current density exceeding 2*10^6 A/cm2 at 5…

Superconductivity · Physics 2016-04-01 Xiangzhuo Xing , Wei Zhou , Nan Zhou , Feifei Yuan , Yongqiang Pan , Haijun Zhao , Xiaofeng Xu , Zhixiang Shi

The mixed spin-1/2 and spin-1 Ising model in the presence of an anisotropic crystalline field is treated exactly within the framework of an extended star-triangle mapping transformation. The exact results for the phase diagrams,…

Statistical Mechanics · Physics 2007-05-23 Jozef Strecka , Michal Jascur

The conductance profiles of magnetic transition metal atoms, such as Fe, Co and Mn, deposited on surfaces and probed by a scanning tunneling microscope (STM), provide detailed information on the magnetic excitations of such nano-magnets. In…

Mesoscale and Nanoscale Physics · Physics 2013-05-30 Aaron Hurley , Nadjib Baadji , Stefano Sanvito

We present a comprehensive investigation on anisotropic magnetic and magnetocaloric properties of the quasi-two-dimensional weak itinerant ferromagnet trigonal Cr$_{0.62}$Te single crystals. Magnetic-anisotropy-induced satellite transition…

Materials Science · Physics 2020-02-07 Yu Liu , Milinda Abeykoon , Eli Stavitski , Klaus Attenkofer , C. Petrovic

The interlayer magnetoresistance of a quasi-two-dimensional layered metal with a d-wave pseudogap is calculated semiclassically. An expression for the interlayer resistivity as a function of the strength and direction of the magnetic field,…

Strongly Correlated Electrons · Physics 2009-06-08 M. F. Smith , Ross H. McKenzie

Anisotropy in strongly correlated materials is a central parameter in determining the electronic ground state and is tuned through the local crystalline electric field. This is notably the case in the CeCo$_{x}$Rh$_{1-x}$In$_{5}$ system…

Strongly Correlated Electrons · Physics 2024-11-28 D. J. Brener , I. Rodriguez Mallo , H. Lane , J. A. Rodriguez-Rivera , K. Schmalzl , M. Songvilay , K. Guratinder , C. Petrovic , C. Stock

The magnetic anisotropy of thin (~ 200 nm) and thick (~ 2 $\mu$m) films and of polycrystalline (diameters ~ 60 nm) powders of the Prussian blue analogue Rb$_{0.7}$Ni$_{4.0}$[Cr(CN)$_6$]$_{2.9} \cdot n$H$_2$O, a ferromagnetic material with…

Mesoscale and Nanoscale Physics · Physics 2010-12-14 D. M. Pajerowski , J. E. Gardner , M. J. Andrus , S. Datta , A. Gomez , S. W. Kycia , S. Hill , D. R. Talham , M. W. Meisel

We calculate the magnetic SANS cross section of dilute ensembles of uniformly magnetized and randomly-oriented Stoner-Wohlfarth particles using the Landau-Lifshitz equation. The focus of our study is on the angular anisotropy of the…

Materials Science · Physics 2022-10-18 Michael P. Adams , Evelyn Pratami-Sinaga , Andreas Michels

Six-fold configurational anisotropy was studied in Permalloy triangles, in which the shape symmetry order yields two energetically non-degenerate micromagnetic configurations of the spins, the so-called "Y" and "buckle" states. A twelve…

Materials Science · Physics 2015-05-13 Laura Thevenard , Dorothee Petit , Huang T. Zeng , Russell P. Cowburn

Nematic superconductors are characterized by an apparent crystal symmetry breaking that results in the anisotropy of the in-plane upper critical magnetic field $H_{c2}$. The symmetry breaking is usually attributed to the strain of the…

Linear defects such as dislocations and disclinations in ordered materials attract foreign particles since they replace strong elastic distortions at the defect cores. In this work, we explore the behavior of isotropic droplets nucleating…

Magnetodynamical properties of nanomagnets are affected by the demagnetizing fields created by the same nanoelements. In addition, magnetocrystalline anisotropy produces an effective field that also contributes to the spin dynamics. In this…

Mesoscale and Nanoscale Physics · Physics 2015-09-14 Vegard Flovik , Ferran Macià , Joan Manel Hernàndez , Rimantas Brucas , Maj Hanson , Erik Wahlstrôm

The angular and temperature dependence of the upper critical field Hc2 in MgB2 was determined from torque magnetometry measurements on single crystals. The Hc2 anisotropy gamma_H was found to decrease with increasing temperature, in…

Superconductivity · Physics 2009-11-07 M. Angst , R. Puzniak , A. Wisniewski , J. Roos , H. Keller , P. Miranovic , J. Jun , S. M. Kazakov , J. Karpinski

The temperature dependence of magnetic anisotropy in (113)A (Ga,Mn)As layers grown by molecular beam epitaxy is studied by means of superconducting quantum interference device (SQUID) magnetometry as well as by ferromagnetic resonance (FMR)…