Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2.1k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR2k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR1.9k papers
- University of California, RiversideUS1.9k papers
- University of VirginiaUS1.8k papers
- Rice UniversityUS1.8k papers
- Fermi National Accelerator LaboratoryUS1.8k papers
- Princeton UniversityUS1.8k papers
- Charles UniversityCZ1.8k papers
- University of Maryland, College ParkUS1.7k papers
- Tata Institute of Fundamental ResearchIN1.7k papers
- University of Notre DameUS1.7k papers
22 papers · 2 filters
Competition between ferromagnetic and charge-orbital ordered phases in PrCaMnO for =1/4, 3/8, and 1/2
Takashi Hotta, Elbio Dagotto
Spin, charge, and orbital structures in models for doped manganites are studied by a combination of analytic mean-field and numerical relaxation techniques. At realistic values for…
Melting of Charge/Orbital Ordered States in NdSrMnO: Temperature and Magnetic Field Dependent Optical Studies
J. H. Jung, H. J. Lee, T. W. Noh +4
We investigated the temperature ( 15 290 K) and the magnetic field ( 0 17 T) dependent optical conductivity spectra of a charge/orbital ordered manganite, N…
Magnetotransport in the low carrier density ferromagnet EuB_6
S. Suellow, I. Prasad, S. Bogdanovich +3
We present a magnetotransport study of the low--carrier density ferromagnet EuB_6. This semimetallic compound, which undergoes two ferromagnetic transitions at T_l = 15.3 K and T_c…
Peculiarities in Low Temperature Properties of Doped Manganites A1-xBxMnO3
M. O. Dzero, L. P. Gor'kov, V. Z. Kresin
The phase diagram and low temperature properties of the doped manganites A1-xBxMnO3 are discussed for the concentrations x < 0.4. The transition from insulating antiferromagnetic t…
Explanation of Giant Cluster Coexistence in Doped Manganites and Other Compounds
Adriana Moreo, Matthias Mayr, Adrian Feiguin +2
Computational studies show the generation of large coexisting metallic and insulating clusters with equal electronic density in models for manganites. The clusters are induced by d…
Topological Scenario for Stripe Formation in Manganese Oxides
Takashi Hotta, Yasutami Takada, Hiroyasu Koizumi +1
The spin-charge-orbital complex structures of manganites are studied using topological concepts. The key quantity is the "winding number" w associated with the Berry-phase connecti…
Comment on ``Density Matrix Renormalization Group Study of the Haldane Phase in Random One-Dimensional Antiferromagnets"
Kun Yang, R. A. Hyman
In a recent Letter (PRL 83, 3297 (1999)), Hida presented numerical results indicating that the Haldane phase of the Heisenberg antiferromagnetic spin-1 chain is stable against bond…
Green's Function Monte Carlo for Lattice Fermions: Application to the t-J Model
C. Stephen Hellberg, Efstratios Manousakis
We develop a general numerical method to study the zero temperature properties of strongly correlated electron models on large lattices. The technique, which resembles Green's Func…
Observation of a new excitation in the mixed-valent state of YbInCu_4
S. R. Garner, Y. W. Rodriguez, Z. Schlesinger +3
Infrared measurements are used to obtain conductivity as a function of temperature and frequency in YbInCu_4, which exhibits an isostructural transition to a mixed-valent state at…
Electrical Noise From Phase Separation In Pr2/3Ca1/3MnO3 Single Crystal
A. Anane, B. Raquet, S. von Molnar +2
Low frequency electrical noise measurements have been used to probe the electronic state of the perovskite-type manganese oxide Pr2/3Ca1/3MnO3 versus temperature and in the vicinit…
Ferromagnetic, A-type, and Charge-Ordered CE-type States in Doped Manganites using Jahn-Teller Phonons
Seiji Yunoki, Takashi Hotta, Elbio Dagotto
The two-orbital model for manganites with both non-cooperative and cooperative Jahn-Teller phonons is studied at hole density x=0.5 using Monte Carlo techniques. The phase diagram…
Destruction of the Mott Insulating Ground State of Ca_2RuO_4 by a Structural Transition
C. S. Alexander, G. Cao, V. Dobrosavljevic +4
We report a first-order phase transition at T_M=357 K in single crystal Ca_2RuO_4, an isomorph to the superconductor Sr_2RuO_4. The discontinuous decrease in electrical resistivity…
Magnetic Domains and Stripes in the Spin-Fermion Model for Cuprates
Charles Buhler, Seiji Yunoki, Adriana Moreo
Monte Carlo simulations applied to the Spin-Fermion model for cuprates show the existence of antiferromagnetic spin domains and charge stripes upon doping. The stripes are partiall…
Search for a quantum phase transition in U(Pt_(1-x)Pd_x)_3
M. J. Graf, R. J. Keizer, A. de Visser +1
Pd in U(Pt_{1-x}Pd_x)_3 suppresses the superconducting T_c to 0 K at critical concentration x_c of 0.007 and induces a conventional AFM state for x > x_c. The resistivity below 1 K…
Experiments on Ladders Reveal a Complex Interplay between a Spin-Gapped Normal State and Superconductivity
Elbio Dagotto
In recent years, the study of ladder materials has developed into a well-established area of research within the general context of Strongly Correlated Electrons. This effort has b…
A-type Antiferromagnetic and C-type Orbital-Ordered State in LaMnO Using Cooperative Jahn-Teller Phonons
Takashi Hotta, Seiji Yunoki, Matthias Mayr +1
The effect of Jahn-Teller phonons on the magnetic and orbital structure of LaMnO is investigated using a combination of relaxation and Monte Carlo techniques on three-dimension…
Ferromagnetism and superstructure in Ca_{1-x}La_xB_6
Victor Barzykin, Lev P. Gor'kov
We critically investigate the model of a doped excitonic insulator, which recently has been invoked to explain some experimental properties of the ferromagnetic state in Ca_{1-x}La…
Temperature-dependent logarithmic corrections in the spin-1/2 Heisenberg chain
Victor Barzykin
We obtain the logarithmic corrections to the dynamic response function and NMR T_1 and T_{2G} rates in the spin-1/2 antiferromagnetic Heisenberg chain using perturbative renormaliz…
Pseudogap Formation in Models for Manganites
Adriana Moreo, Seiji Yunoki, Elbio Dagotto
The density-of-states (DOS) and one-particle spectral function of the one- and two-orbital models for manganites, the latter with Jahn-Teller phonons, are evalu…
Indications of Spin-Charge Separation in the 2D Extended t-J Model
George B. Martins, Robert Eder, Elbio Dagotto
The 2D extended model is studied computationally in a broad region of parameter space, motivated by recent photoemission experiments for the undoped cuprate $\rm Ca_2 Cu…
Impurities and orbital dependent superconductivity in Sr_2RuO_4
Daniel F. Agterberg
There now exists a wealth of experimental evidence that Sr_2RuO_4 is an odd-parity superconductor. Experiments further indicate that among the bands stemming from the Ru {xy,xz,yz}…
Hole-Density Evolution of the One-Particle Spectral Function in Doped Ladders
George B. Martins, Claudio Gazza, Elbio Dagotto
The spectral function of doped ladders is presented on clusters with up to sites at zero temperature applying a recently developed technique tha…