Université Paris-Sud

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19922026

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

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Showing 2005 · cond-mat.str-elShow all

30 papers · 2 filters

cond-mat.str-el2005★ 3 cited

The spin glass-antiferromagnetism competition in Kondo-lattice systems in the presence of a transverse applied magnetic field

S. G. Magalhaes, F. M. Zimmer, B. Coqblin

A theory is proposed to describe the competition among antiferromagnetism (AF), spin glass (SG) and Kondo effect. The model describes two Kondo sublattices with an intrasite Kondo…

cond-mat.str-el2005★ 9 cited

Superconductivity and Antiferromagnetism in Quasi-one-dimensional Organic Conductors

N. Dupuis, C. Bourbonnais, J. C. Nickel

We review the current understanding of superconductivity in the quasi-one-dimensional organic conductors of the Bechgaard and Fabre salt families. We discuss the interplay between…

cond-mat.str-el2005★ 5 cited

Thermodynamic Properties of (Ca,Sr) $_{2}$ RuO $_{4}$ in Magnetic Fields

J. Baier, T. Zabel, M. Kriener +9

We have studied the influence of a magnetic field on the thermodynamic properties of Ca $_{2 - x}$ Sr $_{x}$ RuO $_{4}$ in the intermediate metallic region with tilt and rotational distorti…

cond-mat.str-el2005★ 13 cited

Magnetisation of hole-doped CuO2 spin chains in Sr14-xCaxCu24O41

R. Klingeler, N. Tristan, B. Büchner +3

We report on magnetisation measurements of Sr14-xCaxCu24O41, with 0 <= x <= 12, in magnetic fields up to 16 T. The low temperature magnetic response of the CuO2 spin chains changes…

cond-mat.str-el2005★ 41 cited

Superconducting pairing and density-wave instabilities in quasi-one-dimensional conductors

J. C. Nickel, R. Duprat, C. Bourbonnais +1

Using a renormalization group approach, we determine the phase diagram of an extended quasi-one-dimensional electron gas model that includes interchain hopping, nesting deviations…

cond-mat.str-el2005★ 6 cited

Subgap tunneling through channels of polarons and bipolarons in chain conductors

S. I. Matveenko, S. Brazovskii

We suggest a theory of internal coherent tunneling in the pseudogap region where the applied voltage is below the free electron gap. We consider quasi 1D systems where the gap is o…

cond-mat.str-el2005★ 68 cited

Quasiparticle-like peaks, kinks, and electron-phonon coupling at the ( $π$ ,0) regions in the CMR oxide La $_{2 - 2 x}$ Sr $_{1 + 2 x}$ Mn $_{2}$ O $_{7}$

Z. Sun, Y. -D. Chuang, A. V. Fedorov +11

Using Angle-Resolved Photoemission (ARPES), we present the first observation of sharp quasiparticle-like peaks in a CMR manganite. We focus on the ( $π$ ,0) regions of k-space and st…

cond-mat.str-el2005★ 77 cited

NMR Evidence for Gapped Spin Excitations in Metallic Carbon Nanotubes

P. M. Singer, P. Wzietek, H. Alloul +2

We report on the spin dynamics of 13C isotope enriched inner-walls in double-wall carbon nanotubes (DWCNT) using 13C nuclear magnetic resonance (NMR). Contrary to expectations, we…

cond-mat.str-el2005★ 8 cited

Bose-Einstein condensation of magnons in Cs $_{2}$ CuCl $_{4}$ : a dilute gas limit near the saturation magnetic field

D. L. Kovrizhin, V. Yushankhai, L. Siurakshina

Based on a realistic spin Hamiltonian for a frustrated quasi-two dimensional spin-1/2 antiferromagnet Cs $_{2}$ CuCl $_{4}$ , a three-dimensional spin ordering in the applied magnetic…

cond-mat.str-el2005★ 10 cited

Magnetic resonance study of the spin-reorientation transitions in the quasi-one-dimensional antiferromagnet BaCu2Si2O7

V. N. Glazkov, A. I. Smirnov, A. Revcolevschi +1

A quasi-one dimensional antiferromagnet with a strong reduction of the ordered spin component, BaCu2Si2O7, is studied by the magnetic resonance technique in a wide field and freque…

cond-mat.str-el2005★ 30 cited

Quantum dimer models and effective Hamiltonians on the pyrochlore lattice

R. Moessner, S. L. Sondhi, M. O. Goerbig

We study a large-N deformation of the S=1/2 pyrochlore Heisenberg antiferromagnet which leads to a soluble quantum dimer model at leading non-trivial order. In this limit, the grou…

cond-mat.str-el2005★ 47 cited

Orbital polaron lattice formation in lightly doped La1-xSrxMnO3

J. Geck, P. Wochner, S. Kiele +4

By resonant x-ray scattering at the Mn K-edge on La7/8Sr1/8MnO3, we show that an orbital polaron lattice (OPL) develops at the metal-insulator transition of this compound. This orb…

cond-mat.str-el2005★ 38 cited

Revisiting the chain magnetism in Sr14Cu24O41: Experimental and numerical results

R. Klingeler, B. Buchner, K. -Y. Choi +4

We study the magnetism of the hole doped CuO2 spin chains in Sr14Cu24O41 by measuring the Electron Spin Resonance (ESR) and the static magnetization M in applied magnetic fields up…

cond-mat.str-el2005★ 89 cited

Ground state of the Kagome-like S=1/2 antiferromagnet, Volborthite Cu3V2O7(OH)2.2H2O

F. Bert, D. Bono, P. Mendels +4

Volborthite compound is one of the very few realizations of S=1/2 quantum spins on a highly frustrated kagome-like lattice. Low-T SQUID measurements reveal a broad magnetic transit…

cond-mat.str-el2005★ 69 cited

NMR study of the magnetic and metal-insulator transitions in Na0.5CoO2: a nesting scenario

J. Bobroff, G. Lang, H. Alloul +2

Co and Na NMR are used to probe the local susceptibility and charge state of the two Co sites of the Na-ordered orthorhombic Na0.5CoO2. Above T_N=86K, both sites display a similar…

cond-mat.str-el2005★ 36 cited

Magnon Heat Conductivity and Mean Free Paths in Two-Leg Spin Ladders: A Model-Independent Determination

C. Hess, P. Ribeiro, B. Büchner +4

The magnon thermal conductivity $κ_{mag}$ of the spin ladders in $S r_{14} C u_{24 - x} Z n_{x} O_{41}$ has been investigated at low doping levels $x = 0$ , 0.125, 0.25, 0.5 and 0.…

cond-mat.str-el2005★ 37 cited

Renormalization group approach to interacting fermion systems in the two-particle-irreducible formalism

N. Dupuis

We describe a new formulation of the functional renormalization group (RG) for interacting fermions within a Wilsonian momentum-shell approach. We show that the Luttinger-Ward func…

cond-mat.str-el2005★ 159 cited

Strongly correlated properties of the thermoelectric cobalt oxide Ca3Co4O9

P. Limelette, V. Hardy, P. Auban-Senzier +7

We have performed both in-plane resistivity, Hall effect and specific heat measurements on the thermoelectric cobalt oxide Ca $_{3}$ Co $_{4}$ O $_{9}$ . Four distinct transport regimes…

cond-mat.str-el2005★ 11 cited

Renormalization Group calculations with k|| dependent couplings in a ladder

G. Abramovici, J. C. Nickel, M. Heritier

We calculate the phase diagram of a ladder system, with a Hubbard interaction and an interchain coupling $t_{⊥}$ . We use a Renormalization Group method, in a one loop expansion,…

cond-mat.str-el2005★ 68 cited

Evidence of a single nonmagnetic Co3+ state in the Na1CoO2 cobaltate

G. Lang, J. Bobroff, H. Alloul +3

Macroscopic magnetization, muon spin rotation (muSR), and NMR measurements were carried out to study magnetism in the Na1CoO2 cobaltate. Using SQUID measurements, Na1CoO2 is shown…

cond-mat.str-el2005★ 23 cited

Resistive relaxation in field-induced insulator-metal transition of a (La $_{0.4}$ Pr $_{0.6}$ ) $_{1.2}$ Sr $_{1.8}$ Mn $_{2}$ O $_{7}$ bilayer manganite single crystal

M. Matsukawa, K. Akasaka, H. Noto +1

We have investigated the resistive relaxation of a (La $_{0.4}$ Pr $_{0.6}$ ) $_{1.2}$ Sr $_{1.8}$ Mn $_{2}$ O $_{7}$ single crystal, in order to examine the slow dynamics of the field-induce…

cond-mat.str-el2005★ 22 cited

Effect of suppression of local distortion on magnetic, electrical and thermal transport properties of Cr substituted bi-layer manganite LaSr $_{2}$ Mn $_{2}$ O $_{7}$

M. Matsukawa, M. Chiba, E. Kikuchi +1

We have investigated magnetic, electrical and thermal transport properties (Seebeck effect and thermal conductivity) of LaSr $_{2}$ Mn $_{2 - y}$ Cr $_{y}$ O $_{7}$ polycrystalline samples…

cond-mat.str-el2005★ 22 cited

Correlations, spin dynamics, defects: the highly-frustrated Kagomé bilayer

David Bono, Laurent Limot, Philippe Mendels +2

The SrCr $_9 p$ Ga $_12 - 9 p$ O $_19$ and Ba $_2$ Sn $_2$ ZnGa $_10 - 7 p$ Cr $_7 p$ O $_22$ compounds are two highly-frustrated magnets possessing a quasi-two-dimensional Kagom…

cond-mat.str-el2005★ 24 cited

Orbiton-mediated multi-phonon scattering in La $_{1 - x}$ Sr $_{x}$ MnO $_{3}$

K. -Y. Choi, P. Lemmens, G. Güntherodt +6

We report on Raman scattering measurements of single crystalline La $_{1 - x}$ Sr $_{x}$ MnO $_{3}$ ( $x$ =0, 0.06, 0.09 and 0.125), focusing on the high frequency regime. We observe multi-phon…