Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR10.1k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR4.1k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR3.2k papers
- Université Paris-SaclayFR3.1k papers
- National Institute for Subatomic PhysicsNL2k papers
- University of ManchesterGB2k papers
- Sapienza University of RomeIT2k papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT1.9k papers
- CEA Paris-SaclayFR1.9k papers
- Heidelberg UniversityDE1.8k papers
- Rutherford Appleton LaboratoryGB1.8k papers
- Laboratoire de Physique Nucléaire et de Hautes ÉnergiesFR1.8k papers
28 papers · 2 filters
Steplike Lattice Deformation of Single Crystalline (LaPr)SrMnO Bilayered Manganite
M. Matsukawa, Y. Yamato, T. Kumagai +2
We report a steplike lattice transformation of single crystalline (LaPr)SrMnObilayered manganite accompanied by both magnetization and m…
Quantum phase transitions in trimerized zig-zag spin ladders
H. D. Rosales, D. C. Cabra, M. D. Grynberg +2
We analyze the effects of a trimerized modulation in a quantum spin zig-zag ladder at the magnetization plateau . Such periodicity is argued to be stemmed from l…
Energy levels and their correlations in quasicrystals
A. Jagannathan, F. Piechon
Quasicrystals can be considered, from the point of view of their electronic properties, as being intermediate between metals and insulators. For example, experiments show that quas…
Scaling of dynamic spin correlations in BaCu2SiGeO7
A. Zheludev, T. Masuda, G. Dhalenne +3
The magnetic dynamic structure factor of the one-dimensional S = 1/2 chain system BaCu2(Si0.5Ge0.5)2O7 is studied in a wide range of energy transfers and temperatures. Contrary to…
Magnetoelastic coupling across the metamagnetic transition in CaSrRuO (0.2 < x < 0.5)
J. Baier, P. Steffens, O. Schumann +11
The magnetoelastic coupling in CaSrRuO and in CaSrRuO has been studied combining high-resolution dilatometer and diffraction techniques. Bot…
Domain wall magnetoresistance in a nanopatterned La(2/3)Sr(1/3)MnO3 track
T. Arnal, A. V. Khvalokvskii, M. Bibes +3
We have measured the contribution of magnetic domain walls (DWs) to the electric resistance in epitaxial manganite films patterned by electron-beam lithography into a track contain…
Electronic structure and Fermi surface tolopogy of NaCoO
A. Bourgeois, A. A. Aligia, T. Kroll +1
We construct an effective Hamiltonian for the motion of T2g highly correlated states in NaxCoO2. We solve exactly a multiband model in a CoO6 cluster with electronic occupation cor…
Quantum magnetism in the paratacamite family: towards an ideal kagome lattice
P. Mendels, F. Bert, M. A. de Vries +7
We report MuSR measurements on the S=1/2 (Cu2+) paratacamite Zn_xCu_{4-x}(OH)_6Cl_2 family. Despite a Weiss temperature of -300 K, the x=1 compound is found to have no transition t…
Quasiparticle dispersion near the Fermi surface in NaCoO
A. Bourgeois, A. A. Aligia, T. Kroll +1
We construct an effective Hamiltonian for the motion of t2g highly correlated states in NaxCoO2. This three-band model includes the indirect Co-O-Co hopping t and the crystal-field…
Distribution of the magnetization reversal duration in sub-ns spin-transfer switching
T. Devolder, C. Chappert, J. A. Katine +2
We study the distribution of switching times in spin-transfer switching induced by sub-ns current pulses in pillar-shaped spin-valves. The pulse durations leading to switching foll…
Negativity of the excess noise in a quantum wire capacitively coupled to a gate
F. Dolcini, B. Trauzettel, I. Safi +1
The electrical current noise of a quantum wire is expected to increase with increasing applied voltage. We show that this intuition can be wrong. Specifically, we consider a single…
Anomalous pressure effect on the remanent lattice striction of a (La,Pr)SrMnO bilayered manganite single crystal
M. Matsukawa, A. Tamura, S. Nimori +2
We have studied the pressure effect on magnetostriction, both in the -plane and along the c-axis, of a (La,Pr)SrMnO bilayered manganite single cryst…
Effect of structural distortions on the magnetism of doped spin-Peierls CuGeO3
Virginie Simonet, Beatrice Grenier, Françoise Villain +4
The chemical selectivity and great sensitivity of the Extended X-ray Absorption Spectroscopy technique allowed the determination, in the paramagnetic phase, of the structural disto…
Mott transition in the Hubbard model away from particle-hole symmetry
D. J. Garcia, E. Miranda, K. Hallberg +1
We solve the Dynamical Mean Field Theory equations for the Hubbard model away from the particle-hole symmetric case using the Density Matrix Renormalization Group method. We focus…
Inhomogeneous quantum antiferromagnetism on periodic lattices
A. Jagannathan, R. Moessner, S. Wessel
We study quantum antiferromagnets on two-dimensional bipartite lattices. We focus on local variations in the properties of the ordered phase which arise due to the presence of ineq…
Tunnel magnetoresistance and robust room temperature exchange bias with multiferroic BiFeO3 epitaxial thin films
H. Bea, M. Bibes, S. Cherifi +8
We report on the functionalization of multiferroic BiFeO3 epitaxial films for spintronics. A first example is provided by the use of ultrathin layers of BiFeO3 as tunnel barriers i…
Spin Glass and ferromagnetism in disordered Cerium compounds
S. G. Magalhaes, F. M. Zimmer, P. R. Krebs +1
The competition between spin glass, ferromagnetism and Kondo effect is analysed here in a Kondo lattice model with an inter-site random coupling between the localized magn…
Magneto-optical investigation of the field-induced spin-glass insulator to ferromagnetic metallic transition of the bilayer manganite (LaPr)SrMnO
J. Cao, J. T. Haraldsen, R. C. Rai +7
We measured the magneto-optical response of (LaPr)SrMnO in order to investigate the microscopic aspects of the magnetic field driven spin-gl…
Comment on ``Universal Spin-Flip Transition in Itinerant Antiferromagnets"
N. Dupuis
In a recent paper [Phys. Rev. Lett. 91, 117201 (2003)], it is argued that an itinerant antiferromagnet in an external magnetic field undergoes a spin-flip transition, in marked con…
Unidirectional Diagonal Order and 3D Stacking of Charge Stripes in Orthorhombic Pr1.67Sr0.33NiO4 and Nd1.67Sr0.33NiO4
M. Huecker, M. v. Zimmermann, R. Klingeler +9
The interplay between crystal symmetry and charge stripe order in Pr1.67Sr0.33NiO4 and Nd1.67Sr0.33NiO4 has been studied by means of single crystal x-ray diffraction. In contrast t…
Electronic state of a doped Mott-Hubbard insulator at finite temperatures studied using the dynamical mean-field theory
A. Camjayi, R. Chitra, M. J. Rozenberg
We study the electronic state of the doped Mott-Hubbard insulator within Dynamical Mean Field Theory. The evolution of the finite temperature spectral functions as a function of do…
Unconventional Dynamics in Triangular Heisenberg Antiferromagnet NaCrO2
A. Olariu, P. Mendels, F. Bert +4
We report magnetization, specific heat, muon spin rotation and Na NMR measurements on the S=3/2 rhombohedrally stacked Heisenberg antiferromagnet NaCrO2. This compound appears to b…
Direct evidence for a dynamical ground state in the highly frustrated TbSnO pyrochlore
F. Bert, P. Mendels, A. Olariu +5
MuSR experiments have been performed on powder sample of the "ordered spin ice" TbSnO pyrochlore compound. At base temperature (T=35mK) the muon relaxation is found to…
Octahedral tilts and electronic correlations in La_7/8Sr_1/8MnO_3
J. Geck, P. Wochner, S. Kiele +3
We present a resonant x-ray scattering study of the octahedral tilt order between 50K and 310K in La_7/8Sr_1/8MnO_3. At the La L_II-edge the resonant (300) reflection probes cooper…