605 citations · 4.9k across the 51 of their papers we have counts for
17 papers · 1 filter
Jacques Friedel and the physics of metals and alloys
Jacques Villain, Mireille Lavagna, Patrick Bruno
This is an introduction to the theoretical physics of metals for students and physicists from other specialities. Certain simple consequences of the Fermi statistics in pure metals…
Non-collinear magnetic ordering in compressed FePd ordered alloy: a first principles study
Y. O. Kvashnin, S. Khmelevskyi, J. Kudrnovský +3
By means of ab initio calculations based on the density functional theory we investigated magnetic phase diagram of ordered FePd alloy as a function of external pressure. Consi…
Structural phase transitions and fundamental band gaps of Mg(x)Zn(1-x)O alloys from first principles
I. V. Maznichenko, A. Ernst, M. Bouhassoune +8
The structural phase transitions and the fundamental band gaps of Mg(x)Zn(1-x)O alloys are investigated by detailed first-principles calculations in the entire range of Mg concentr…
Magnetic Anisotropy and Magnetization Dynamics of Individual Atoms and Clusters of Fe and Co on Pt(111)
T. Balashov, T. Schuh, A. F. Takacs +8
The recently discovered giant magnetic anisotropy of single magnetic Co atoms raises the hope of magnetic storage in small clusters. We present a joint experimental and theoretical…
Kondo effect in single atom contacts: the importance of the atomic geometry
Lucia Vitali, Robin Ohmann, Sebastian Stepanow +6
Co single atom junctions on copper surfaces are studied by scanning tunneling microscopy and ab-initio calculations. The Kondo temperature of single cobalt atoms on the Cu(111) sur…
Role of the conduction electrons in mediating exchange interactions in Heusler alloys
E. Sasioglu, L. M. Sandratskii, P. Bruno
Because of large spatial separation of the Mn atoms in Heusler alloys the Mn 3d states belonging to different atoms do not overlap considerably. Therefore an indirect exchange inte…
Vacuum fluctuations and the spin current in mesoscopic structures with collinear magnetic order
Vitalii K. Dugaev, Patrick Bruno
We show that in magnetic nanostructures with a homogeneous magnetic order, the equilibrium spin current can be nonzero. For example, this is the case of a wide magnetic ring with t…
Exchange interactions and temperature dependence of the magnetization in half--metallic Heusler alloys
E. Sasioglu, L. M. Sandratskii, P. Bruno +1
We study the exchange interactions in half-metallic Heusler alloys using first-principles calculations in conjunction with the frozen-magnon approximation. The Curie temperature is…
Magnetic exchange coupling and Curie temperature of Ni(1+x)MnSb (x=0, 0.25, 0.5, 0.75, 1) from first principles
E. Sasioglu, L. M. Sandratskii, P. Bruno
We study the dependence of magnetic interactions and Curie temperature in Ni(1+x)MnSb system on the Ni concentration within the framework of the density-functional theory. The calc…
Pressure dependence of the Curie temperature in Ni2MnSn Heusler alloy: A first-principles study
E. Sasioglu, L. M. Sandratskii, P. Bruno
The pressure dependence of electronic structure, exchange interactions and Curie temperature in ferromagnetic Heusler alloy Ni2MnSn has been studied theoretically within the framew…
Stability of ferromagnetism in the half-metallic pnictides and similar compounds: A first-principles study
E. Sasioglu, I. Galanakis, L. M. Sandratskii +1
Based on first-principles electron structure calculations and employing the frozen-magnon approximation we study the exchange interactions in a series of transition-metal binary al…
Berry phase of magnons in textured ferromagnets
V. K. Dugaev, P. Bruno, B. Canals +1
We study the energy spectrum of magnons in a ferromagnet with topologically nontrivial magnetization profile. In the case of inhomogeneous magnetization corresponding to a metastab…
Anomalous Hall effect in a two-dimensional electron gas with spin-orbit interaction
V. K. Dugaev, P. Bruno, M. Taillefumier +2
We discuss the mechanism of anomalous Hall effect related to the contribution of electron states below the Fermi surface (induced by the Berry phase in momentum space). Our main ca…
Ab initio study of mirages and magnetic interactions in quantum corrals
V. S. Stepanyuk, L. Niebergall, W. Hergert +1
The state of the art ab initio calculations of quantum mirages,the spin-polarization of surface-state electrons and the exchange interaction between magnetic adatoms in Cu and Co c…
Ab initio approach for atomic relaxations in supported magnetic clusters
V. S. Stepanyuk, A. L. Klavsyuk, L. Niebergall +3
We present a newly developed scheme for atomic relaxations of magnetic supported clusters. Our approach is based on the full potential Korringa-Kohn-Rostoker Green's function metho…
Topological Hall effect and Berry phase in magnetic nanostructures
P. Bruno, V. K. Dugaev, M. Taillefumier
We discuss the anomalous Hall effect in a two-dimensional electron gas subject to a spatially varying magnetization. This topological Hall effect (THE) does not require any spin-or…
Exchange interactions and Curie temperature in (GaMn)As
L. M. Sandratskii, P. Bruno
We use supercell and frozen-magnon approaches to study the dependence of the magnetic interactions in (Ga,Mn)As on the Mn concentration. We report the parameters of the exchange in…