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Electronic transport through thin and laterally constrained domain walls in ferromagnetic nanojunctions is analyzed theoretically. The description is formulated in the basis of scattering states. The resistance of the domain wall is…

Materials Science · Physics 2009-11-10 V. K. Dugaev , J. Berakdar , J. Barnas

In this work we studied Cu/Co multilayers prepared using dc-magnetron sputtering technique with Ag surfactant. It was found that Ag balances the difference in the surface free energy of Cu and Co and this results in removing the asymmetry…

Mesoscale and Nanoscale Physics · Physics 2012-09-25 S. M. Amir , Mukul Gupta , Ajay Gupta , J. Stahn

Antiferromagnetically coupled multilayers with perpendicular anisotropy, as [CoPt]/Ru, Co/Ir, Fe/Au, display ferromagnetic stripe phases as the ground states. It is theoretically shown that the antiferromagnetic interlayer exchange causes a…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 N. S. Kiselev , I. E. Dragunov , U. K. Roessler , A. N. Bogdanov

We have performed a systematic investigation of the longitudinal and transverse magnetoresistance of a single ferromagnetic domain in (Ga,Mn)As. We find that, by taking into account the intrinsic dependence of the resistivity on the…

Strongly Correlated Electrons · Physics 2009-11-10 S. T. B. Goennenwein , S. Russo , A. F. Morpurgo , T. M. Klapwijk , W. van Roy , J. de Boeck

The phenomenology of the emission of pulsars and magnetars depends dramatically on the structure and properties of their magnetic field. In particular it is believed that the outbursting and flaring activity observed in AXPs and SRGs is…

High Energy Astrophysical Phenomena · Physics 2016-06-22 N. Bucciantini , A. G. Pili , L. Del Zanna

Anti-site disorder is one of the most important issues that arises in synthesis of double perovskite for spintronic applications. Although it is known that anti-site disorder leads to a proliferation of structural defects, known as the…

Mesoscale and Nanoscale Physics · Physics 2021-02-24 Bo Yuan , Subin Kim , Sae Hwan Chun , Wentao Jin , C. S. Nelson , Adam J. Hauser , F. Y. Yang , Young-June Kim

Short-range magnetic correlations can significantly increase the thermopower of magnetic semiconductors, representing a noteworthy development in the decades-long effort to develop high-performance thermoelectric materials. Here, we reveal…

By studying coupled ferro- (FM) and antiferromagnetic (AFM) thin film systems, we obtain an in-plane magnetic reorientation as a function of temperature and FM film thickness. The interlayer exchange coupling causes a uniaxial anisotropy,…

Statistical Mechanics · Physics 2009-11-10 P. J. Jensen , H. Dreysse

We review the concept of chirality, at first briefly in a general context then in the specific framework of the spin networks. We next discuss to what extent neutron scattering appears as an unconvertible tool to probe magnetic chirality in…

Strongly Correlated Electrons · Physics 2013-01-09 Virginie Simonet , Mickael Loire , Rafik Ballou

The transmission of correlated electrons through a domain wall in ferromagnetic quasi-one-dimensional systems is studied theoretically in the case when the domain wall width is comparable with the Fermi wavelength of the charge carriers.…

Strongly Correlated Electrons · Physics 2007-05-23 M. A. N. Araujo , V. K. Dugaev , V. R. Vieira , J. Berakdar , J. Barnas

Controlling magnetic order on ultrafast timescales, driven by spintronic and recording applications, is one of the main directions of current research in magnetism. Despite major advances in understanding the temporal evolution of magnetic…

Recent neutron scattering, nuclear magnetic resonance, and scanning tunneling microscopy experiments have yielded valuable new information on the interplay between charge and spin density wave order and superconductivity in the cuprate…

Strongly Correlated Electrons · Physics 2007-05-23 Anatoli Polkovnikov , Subir Sachdev , Matthias Vojta , Eugene Demler

The design of spin-transport based devices such as magnon transistors or spin valves will require multilayer systems composed of different magnetic materials with different physical properties. Such layered structures can show various…

Materials Science · Physics 2022-03-23 Verena Brehm , Martin Evers , Ulrike Ritzmann , Ulrich Nowak

The authors have investigated magnetic domain wall induced capacitance variation as a tool for the detection of magnetic reversal in magnetic nanowires for in-plane (NiFe) and out-of-plane (Co/Pd) magnetization configurations. The switching…

Materials Science · Physics 2015-06-11 Kulothungasagaran Narayanapillai , Mahdi Jamali , Hyunsoo Yang

We use neutron scattering to study the spin excitations associated with the stripe antiferromagnetic (AFM) order in semiconducting K$_{0.85}$Fe$_{1.54}$Se$_2$ ($T_N$=$280$ K). We show that the spin wave spectra can be accurately described…

Superconductivity · Physics 2015-06-19 Jun Zhao , Yao Shen , R. J. Birgeneau , Miao Gao , Zhong-Yi Lu , D. -H. Lee , X. Z. Lu , H. J. Xiang , D. L. Abernathy , Y. Zhao

Magnetic neutron scattering measures spin-spin correlations giving information about the long-range spin order as well as the shape of the spin density in magnetic materials. Similarly, detailed first principles calculations directly…

We present theoretical results on the interplay of magnetic and superconducting orders in diffusive ferromagnet-superconductor-ferromagnet trilayers. The induced triplet superconducting correlations throughout the trilayer lead to an…

Superconductivity · Physics 2009-11-11 Tomas Lofwander , Thierry Champel , Johannes Durst , Matthias Eschrig

Possible consequences of ferromagnetic transition in dense matter suggested recently by Kutschera and W{\'o}jcik, for the magnetic properties of neutron stars, are studied. Specific model of dense matter, in which a small admixture of…

Astrophysics · Physics 2011-05-23 P. Haensel , S. Bonazzola

Magnetic lateral multilayers have been fabricated on weak perpendicular magnetic anisotropy amorphous Nd-Co films in order to perform a systematic study on the conditions for controlled nucleation of topological defects within their…

Mesoscale and Nanoscale Physics · Physics 2013-11-21 A. Hierro-Rodriguez , M. Velez , R. Morales , N. Soriano , G. Rodriguez-Rodriguez , L. M. Alvarez-Prado , J. I. Martin , J. M. Alameda

We develop a general formalism for analyzing the ferromagnetic resonance characteristics of a magnetic dimer consisting of two magnetic elements (in a horizontal or vertical configuration) coupled by dipolar interaction, taking account of…

Materials Science · Physics 2015-01-22 A. F. Franco , J. L. Déjardin , H. Kachkachi
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