1k citations · 2.9k across the 47 of their papers we have counts for
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Signatures of a spin-1/2 cooperative paramagnet in the diluted triangular lattice of YCuTiO
S. Kundu, Akmal Hossain, Pranava Keerthi S +11
We present a combination of thermodynamic and dynamic experimental signatures of a disorder driven dynamic cooperative paramagnet in a 50% site diluted triangular lattice spin-1/2…
Magnetic properties of nanoparticles compacts with controlled broadening of the particle size distribution
Mikael S. Andersson, Roland Mathieu, Peter S. Normile +4
Binary random compacts with different proportions of small (volume V) and large (volume 2V) bare maghemite nanoparticles (NPs) are used to investigate the effect of controllably br…
Thickness dependence of dynamic and static magnetic properties of pulsed laser deposited LaSrMnO films on SrTiO(001)
Åsmund Monsen, Jos E. Boschker, Ferran Macià +6
We present a comprehensive study of the thickness dependence of static and magneto-dynamic magnetic properties of LaSrMnO. Epitaxial pulsed laser deposited La$_…
Preparation, structural, dielectric and magnetic properties of LaFeO3-PbTiO3 solid solutions
S. A. Ivanov, R. Tellgren, F. Porcher +7
Solid solutions of (1-x)LaFeO3-(x)PbTiO3 (0<x<1) have been prepared by conventional solid-state reaction. These complex perovskites have been studied by means of X-ray (XRPD) and n…
Near room-temperature colossal magnetodielectricity and multiglass properties in partially-disordered La2NiMnO6
D. Choudhury, P. Mandal, R. Mathieu +8
We report magnetic, dielectric and magnetodielectric responses of pure monoclinic bulk phase of partially-disordered La2NiMnO6, exhibiting a spectrum of unusual properties and esta…
Spatially controlled formation of superparamagnetic (Mn,Ga)As nanocrystals in high temperature annealed (Ga,Mn)As/GaAs superlattices
J. Sadowski, J. Z. Domagala, R. Mathieu +2
The annealing-induced formation of (Mn,Ga)As nanocrystals in (Ga,Mn)As/GaAs superlattices was studied by X-ray diffraction, transmission electron microscopy and magnetometry. The s…
Temperature-dependent multi-k magnetic structure in multiferroic Co3TeO6
S. A. Ivanov, R. Tellgren, C. Ritter +6
A complex magnetic order of the multiferroic compound Co3TeO6 has been revealed by neutron powder diffraction studies on ceramics and crushed single crystals. The compound adopts a…
Short-range spin order and frustrated magnetism in Mn2InSbO6 and Mn2ScSbO6
S. A. Ivanov, P. Nordblad, R. Mathieu +3
The complex metal oxides Mn2ASbO6 (A=In, Sc) with a corundum-related structure A3BO6 have been prepared as polycrystalline powders by a solid state reaction route. The crystal stru…
Formation process and superparamagnetic properties of (Mn,Ga)As nanocrystals in GaAs fabricated by annealing of (Ga,Mn)As layers with low Mn content
Janusz Sadowski, Jaroslaw Z. Domagala, Roland Mathieu +4
X-ray diffraction, transmission electron microscopy, and magnetization measurements are employed to study the structural and magnetic properties of Mn-rich (Mn,Ga)As nanocrystals e…
Voids and Mn-rich inclusions in a (Ga,Mn)As ferromagnetic semiconductor investigated by transmission electron microscopy
A. Kovacs, J. Sadowski, T. Kasama +5
Voids adjacent to both cubic (ZnS-type) and hexagonal (NiAs-type) Mn-rich nanocrystals are characterized using aberration-corrected transmission electron microscopy in annealed Ga0…
Logarithmic growth law in the two-dimensional Ising spin glass state resulting from the electron doping in single-layered manganites
R. Mathieu, J. P. He, Y. Kaneko +3
The ac-susceptibility of the electron doped single-layered manganite LaSrMnO is analyzed in detail. A quasi two-dimensional (2) antiferromagnetic (AFM) order…
Coexistence of long-ranged charge and orbital order and spin-glass state in single-layered manganites with weak quenched disorder
R. Mathieu, J. P. He, X. Z. Yu +6
The relationship between orbital and spin degrees of freedom in the single-crystals of the hole-doped PrCaMnO, 0.3 0.7, has been investigated…
Bandwidth-disorder phase diagram of half doped layered manganites
R. Mathieu, M. Uchida, Y. Kaneko +8
Phase diagrams in the plane of (the average ionic radius, related to one-electron bandwidth ) and (the ionic radius variance, measuring the quenched disorder), or ``…
Impurity-induced transition to a Mott insulator in SrRuO
R. Mathieu, A. Asamitsu, Y. Kaneko +8
The electrical, magnetic, and structural properties of Sr(RuMn)O (0 0.2) are investigated. The parent compound SrRuO is a paramagn…
Determination of the intrinsic anomalous Hall effect of SrRuO
R. Mathieu, C. U. Jung, H. Yamada +3
The anomalous Hall effect (AHE) of epitaxial SrRuO films with varying lattice parameters is investigated, and analyzed according to the Berry-phase scenario. SrRuO thin fil…
EuSrMnO: a three-dimensional XY spin glass
R. Mathieu, A. Asamitsu, Y. Kaneko +2
The frequency, temperature, and dc-bias dependence of the ac-susceptibility of a high quality single crystal of the EuSrMnO layered manganite is investigated. E…
Photoemission studies of the annealing induced modifications of (Ga,Mn)As
M. Adell, L. Ilver, J. Kanski +2
Using angle resolved photoemission we have investigated annealing-induced changes in Ga(1-x)Mn(x)As with x = 0.05. We find that the position of the Fermi energy is a function of an…
Scaling of the anomalous Hall effect in SrCaRuO
R. Mathieu, A. Asamitsu, H. Yamada +5
The anomalous Hall effect (AHE) of ferromagnetic thin films of SrCaRuO (0 0.4) is studied as a function of and temperature . As increases…
Spin Glasses: A Ghost Story
P. E. Jönsson, R. Mathieu, P. Nordblad +3
Extensive experimental and numerical studies of the non-equilibrium dynamics of spin glasses subjected to temperature or bond perturbations have been performed to investigate chaos…
Effect of annealing on carrier density and Curie temperature in epitaxial (Ga,Mn)As thin films
B. Sorensen, J. Sadowski, R. Mathieu +2
We report a clear correspondence between changes in the Curie temperature and carrier density upon annealing in epitaxially grown (Ga,Mn)As layers with thicknesses in the range bet…
Strong rejuvenation in a chiral-glass superconductor
A. Gardchareon, R. Mathieu, P. E. Jönsson +1
The glassy paramagnetic Meissner phase of a BiSrCaCuO superconductor ( = 8.18) is investigated by squid magnetometry, using ``dc-memory'' experiments employed ea…
Magnetic Properties of Short Period InGaMnAs/InGaAs Superlattices
J. Sadowski, R. Mathieu, P. Svedlindh +4
We have observed a paramagnetic-to-ferromagnetic phase transition in short period InGaMnAs/InGaAs superlattices. The thicknesses of magnetic InGaMnAs layers in the structures studi…
Ferromagnetic GaMnAs/GaAs superlattices - MBE growth and magnetic properties
J. Sadowski, R. Mathieu, P. Svedlindh +9
We have studied the magnetic properties of (GaMnAs)m/(GaAs)n superlattices with magnetic GaMnAs layers of thickness between 8 and 16 molecular layers (ML) (23-45 Å), and with nonma…
Photoemission studies of GaMnAs: Mn-concentration dependent properties
H. Asklund, L. Ilver, J. Kanski +2
Using angle-resolved photoemission, we have investigated the development of the electronic structure and the Fermi level pinnning in GaMnAs with Mn concentrations in…