Experimental observation of spin glass state in the highly disordered quaternary Heusler alloy FeRuMnGa

Ground State Structure in a Highly Disordered Spin Glass Model

We propose a new Ising spin glass model on Z of Edwards-Anderson type, but with highly disordered coupling magnitudes, in which a greedy algorithm for producing ground states is exact. We find that the procedure for determining (infinite volume) ground states for this model can be related to invasion percolation with the number of ground states identified as 2 , where N = N (d) is the number of...

Spin configurations in Co2FeAl0.4Si0.6 Heusler alloy thin film elements

C. A. F. Vaz, J. Rhensius, J. Heidler, P. Wohlhüter, A. Bisig, H. S. Körner, T. O. Mentes, A. Locatelli, L. Le Guyader, F. Nolting, T. Graf, C. Felser, L. J. Heyderman, and M. Kläui SwissFEL, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland Laboratory for Nanomagnetism and Spin Dynamics, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland Laboratory for Microand Na...

Micromagnetic simulation of high-power spin-torque oscillator in half- metallic Heusler alloy spin valve nanopillar

Spin Glass and ferromagnetism in disordered Kondo lattice

The competition among spin glass (SG), ferromagnetism and Kondo effect has been analysed in a Kondo lattice model where the inter-site coupling Jij between the localized magnetic moments is given by a generalized Mattis model [5] which represents an interpolation between ferromagnetism and a highly disordered spin glass. Functional integral techniques with of Grassmann fields has been used to o...

Effect of swap disorder on the physical properties of the quaternary Heusler alloy PdMnTiAl: a first-principles study

Heusler alloys crystallize in a close-packed cubic structure, having a four-atom basis forming a face-centred cubic lattice. By selecting different composite elements, Heusler alloys provide a large family of members for frontier research of spintronics and magnetic materials and devices. In this paper, the structural, electronic and magnetic properties of a novel quaternary Heusler alloy, PdMn...