TITLE

Spin polarization tuning in Mn5-xFexGe3

AUTHOR(S)
Stroppa, A.; Kresse, G.; Continenza, A.
PUB. DATE
September 2008
SOURCE
Applied Physics Letters;9/1/2008, Vol. 93 Issue 9, p092502
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Experimentally, the intermetallic compound Mn4FeGe3 has been recently shown to exhibit enhanced magnetic properties and spin polarization compared to the Mn5Ge3 parent compound. The present ab initio study focuses on the effect of Fe substitution on the electronic and magnetic properties of the compound. Our calculations reveal that the changes on the Fermi surface of the doped compound are remarkable, and provide explanations for the enhanced spin polarization observed. Finally, we show that it is indeed possible to tune the degree of spin polarization upon Fe doping, thus making the Mn5-xFexGe3 intermetallic alloy very promising for future spintronic applications.
ACCESSION #
34360733

 

Related Articles

  • Electronic and Magnetic Properties of Superconducting Sr4V2Fe2As2O6 Versus Sr4Sc2Fe2As2O6. Shein, I. R.; Ivanovskii, A. L. // Journal of Superconductivity & Novel Magnetism;Oct2009, Vol. 22 Issue 7, p613 

    First principles of FLAPW-GGA calculations have been performed with the purpose to understand the peculiarities of band structure and Fermi surface topology for recently discovered 37 K superconductor: Sr4V2Fe2As2O6—in comparison with isostructural phase Sr4Sc2Fe2As2O6. Our main finding...

  • Alternating current conductivity and electron spin resonance of the Cd1 - x FexTe alloys. Zhukovski, P.; Partyka, Ya.; Vengerek, P.; Koltunovich, T.; Sidorenko, Yu.; Stelmakh, V.; Lapchuk, N. // Semiconductors;May2007, Vol. 41 Issue 5, p526 

    The results of measurements of frequency dependences of conductivity and electron spin resonance (ESR) of the Cd1 - x FexTe alloys (0.01 = x = 0.05) at room temperature are presented. It is found that, in the composition range 0.003 = x = 0.05, a new asymmetric ESR absorption line with g �...

  • Modeling and performance of vanadium–oxide transition edge microbolometers. de Almeida, L.A.L.; Deep, G.S.; Lima, A.M.N.; Khrebtov, I.A.; Malyarov, V.G.; Neff, H. // Applied Physics Letters;10/18/2004, Vol. 85 Issue 16, p3605 

    The performance of a VO2 thin-film microbolometer has been investigated. The device is operated within 35 °C

  • A site-selective antiferromagnetic ground state in layered pnictide-oxide BaTi2As2O. Xiang-Long Yu; Da-Yong Liu; Ya-Min Quan; Ting Jia; Hai-Qing Lin; Liang-Jian Zou // Journal of Applied Physics;2014, Vol. 115 Issue 17, p17A924-1 

    The electronic and magnetic properties of BaTi2As2O have been investigated using both the first-principles and analytical methods. The full-potential linearized augmented plane-wave calculations show that the most stable state is a site-selective antiferromagnetic (AFM) metal with a 2 × 1...

  • Metal–insulator transition: A plane mystery. Smet, Jurgen H. // Nature Physics;Jun2007, Vol. 3 Issue 6, p370 

    The article discusses the role of valley polarization in metal-insulator transition. According to the author, in two dimensions, any electron system approaching absolute zero should become insulating in theory. However, when an applied strain breaks this degeneracy the valleys become unequally...

  • Mössbauer effect probe of field-induced magnetic phase transition in LaFe13-xSix intermetallic compounds. Zhao-hua Cheng; Nai-li Di; Qing-an Li; Zhi-qi Kou; Zhi Luo; Xiao Ma; Guang-jun Wang; Feng-xia Hu; Bao-gen Shen // Applied Physics Letters;9/6/2004, Vol. 85 Issue 10, p1745 

    Direct evidence of a field-induced magnetic phase transition in LaFe13-xSix intermetallics with a large magneticaloric effect was provided by 57Fe Mössbauer spectra in externally applied magnetic fields. Moreover, Mössbauer spectra demonstrate that a magnetic structure collinear to the...

  • On the Structural Transition Driven by Band Nesting in 1111 Pnictides. Ricci, Alessandro; Poccia, Nicola; Joseph, Boby; Bianconi, Antonio // Journal of Superconductivity & Novel Magnetism;Apr2011, Vol. 24 Issue 3, p1201 

    The lattice critical response in REFeAsO (RE=Pr, Nd and Sm) oxypnictides near the orthorhombic-to-tetrahedral structural phase transition is studied using ultra-high-resolution X-ray diffraction in the temperature range 4 to 250 K. The critical exponent of the structural phase transition β is...

  • Effect of pressure on magnetic properties of the compound MnSi. Panfilov, A.S. // Low Temperature Physics;Jun99, Vol. 25 Issue 6, p432 

    Studies the effect of pressure on magnetic properties of the intermetallic compound. Findings of calculations of the electron structure of the paramagnetic state; Distinguishing features of the intermetallic compound; Spin-polarized state of the intermetallic compound.

  • Effect of partial site occupation on the magnetic properties of Nd2Fe17-xSix by supercell... Huang, Ming-Zhu; Ching, W.Y. // Journal of Applied Physics;4/17/1997, Vol. 81 Issue 8, p5112 

    Studies the magnetic properties of the Nd2Fe17-xSix intermetallic compounds with the use of spin-polarized supercell calculations in which the selected sites of substitution are close to the situations in real samples. Moment increase per Fe site in the Si substituted samples.

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics