Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Max Planck Institute for Gravitational PhysicsDE1.5k papers
- Max Planck Institute for Extraterrestrial PhysicsDE1.4k papers
- Max Planck Institute for AstrophysicsDE1.2k papers
- Max Planck Institute for Nuclear PhysicsDE1.1k papers
- Centre National de la Recherche ScientifiqueFR986 papers
- Max Planck Institute for the Physics of Complex SystemsDE799 papers
- Max Planck Institute for MathematicsDE519 papers
- Heidelberg UniversityDE513 papers
- Max Planck Institute for PhysicsDE507 papers
- Max Planck Institute for Solar System ResearchDE483 papers
- California Institute of TechnologyUS481 papers
- National Institute for AstrophysicsIT450 papers
38 papers · 2 filters
Magnetic phase diagram of YbCo2Si2 derived from magnetization measurements
L. Pedrero, C. Klingner, C. Krellner +3
We report on high-resolution dc-magnetization (M) measurements on a high-quality single crystal of YbCo2Si2. M was measured down to 0.05K and in fields up to 4T, with the magnetic…
A field trip through spin ice
G. Sala, C. Castelnovo, R. Moessner +5
Fractionalisation -- the breaking up of an apparently indivisible microscopic degree of freedom -- is one of the most counterintuitive phenomena in many-body physics. Here we study…
Dimensionality Control of Electronic Phase Transitions in Nickel-Oxide Superlattices
A. V. Boris, Y. Matiks, E. Benckiser +15
The competition between collective quantum phases in materials with strongly correlated electrons depends sensitively on the dimensionality of the electron system, which is difficu…
Actinide Topological Insulator Materials with Strong Interaction
Xiao Zhang, Haijun Zhang, Claudia Felser +1
Topological band insulators have recently been discovered in spin-orbit coupled two and three dimensional systems. In this work, we theoretically predict a class of topological Mot…
From antiferromagnetic insulator to correlated metal in pressurized and doped LaMnPO
J. W. Simonson, Z. P. Yin, M. Pezzoli +17
Widespread adoption of superconducting technologies requires the discovery of new materials with enhanced properties, especially higher superconducting transition temperatures T$_{…
Magnetic properties and revisited exchange integrals of the frustrated chain cuprate PbCuSO(OH) - linarite
A. U. B. Wolter, F. Lipps, M. Schäpers +12
We present a detailed study in the paramagnetic regime of the frustrated = 1/2 spin-compound linarite, PbCuSO(OH), with competing ferromagnetic nearest-neighbor and ant…
Muon spin relaxation and neutron diffraction investigations of quadrupolar and magnetically ordered states of YbRu2Ge2
H. S. Jeevan, D. T. Adroja, A. D. Hillier +3
The magnetic and quadrupolar ordered states of polycrystalline YbRu2Ge2 have been investigated using zero-field muon spin relaxation (μSR) and neutron diffraction measurements. Spe…
Strong electronic correlation in the Hydrogen chain: a variational Monte Carlo study
Lorenzo Stella, Claudio Attaccalite, Sandro Sorella +1
In this article, we report a fully ab initio variational Monte Carlo study of the linear, and periodic chain of Hydrogen atoms, a prototype system providing the simplest example of…
Magnetic properties of the low-dimensional spin-1/2 magnet α-Cu_2As_2O_7
Y. C. Arango, E. Vavilova, M. Abdel-Hafiez +11
In this work we study the interplay between the crystal structure and magnetism of the pyroarsenate α-Cu_2As_2O_7 by means of magnetization, heat capacity, electron spin resonance…
Thermoelectric transport across the metamagnetic transition of CeRu2Si2
Heike Pfau, Ramzy Daou, Manuel Brando +1
We have measured the thermopower across the metamagnetic transition of the heavy fermion compound CeRu2Si2 at temperatures down to 0.1K and magnetic fields up to 11.5T. We find a l…
RKKY interaction in SDW phase of iron-based superconductors
Alireza Akbari, Ilya Eremin, Peter Thalmeier
Using the multiband model we analyze the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction between the magnetic impurities in layered ferropnictide superconductors. In the normal st…
Nanoscale imaging of the electronic and structural transitions in vanadium dioxide
M. M. Qazilbash, A. Tripathi, A. A. Schafgans +8
We investigate the electronic and structural changes at the nanoscale in vanadium dioxide (VO2) in the vicinity of its thermally driven phase transition. Both electronic and struct…
Ground-state phase diagram of the quantum J1-J2 model on the honeycomb lattice
Fabio Mezzacapo, Massimo Boninsegni
We study the ground-state phase diagram of the quantum model on the honeycomb lattice by means of an entangled-plaquette variational ansatz. Values of energy and relevant…
Destruction of valence-bond order in a sawtooth chain with a Dzyaloshinskii-Moriya term
Zhihao Hao, Yuan Wan, Ioannis Rousochatzakis +4
A small value of the spin gap in quantum antiferromagnets with strong frustration makes them susceptible to nominally small deviations from the ideal Heisenberg model. One of such…
Quasiparticle interference in heavy Fermion superconductor CeCoIn_5
Alireza Akbari, Peter Thalmeier, Ilya Eremin
We investigate the quasiparticle interference in the heavy Fermion superconductor CeCoIn_5 as direct method to confirm the d-wave gap symmetry. The ambiguity between d_{xy} and d_{…
Staggered moment dependence on field-tuned quantum fluctuations in 2D frustrated antiferromagnets
Mohammad Siahatgar, Burkhard Schmidt, Peter Thalmeier
We propose an efficient method to identify the degree of frustration in quasi-2D antiferromagnets described by the J_1-J_2 Heisenberg model. The frustration ratio J_2/J_1 is usuall…
Effective screening and the plasmaron bands in Graphene
Andrew L. Walter, Aaron Bostwick, Ki-Joon Jeon +10
Electron-plasmon coupling in graphene has recently been shown to give rise to a "plasmaron" quasiparticle excitation. The strength of this coupling has been predicted to depend on…
Debye-Hückel theory for spin ice at low temperature
Claudio Castelnovo, Roderich Moessner, Shivaji Sondhi
At low temperatures, spin ice is populated by a finite density of magnetic monopoles-pointlike topological defects with a mutual magnetic Coulomb interaction. We discuss the proper…
Intermediate Haldane phase in spin-2 quantum chains with uniaxial anisotropy
Hong-Hao Tu, Roman Orus
We provide evidence of an intermediate Haldane phase in a spin-2 quantum chain. By combining effective field theory and numerical approaches, we show that the phase diagram of the…
Magnetic model for A2CuP2O7 (A = Na, Li) revisited: 1D versus 2D behavior
S. Lebernegg, A. A. Tsirlin, O. Janson +4
We report magnetization measurements, full-potential band structure calculations, and microscopic modeling for the spin-1/2 Heisenberg magnets A2CuP2O7 (A = Na, Li). Based on a qua…
Femtosecond dynamics of the collinear-to-spiral antiferromagnetic phase transition in CuO
S. L. Johnson, R. A. de Souza, U. Staub +22
We report on the ultrafast dynamics of magnetic order in a single crystal of CuO at a temperature of 207 K in response to strong optical excitation using femtosecond resonant x-ray…
Majorana Edge States in Interacting Two-chain Ladders of Fermions
Meng Cheng, Hong-Hao Tu
In this work we study interacting spinless fermions on a two-chain ladder with inter-chain pair tunneling while single-particle tunneling is suppressed at low energy. The model emb…
Interplay between Fe 3d and Ce 4f magnetism and Kondo interaction in CeFeAs_{1-x}P_{x}O probed by ^{75}As and ^{31}P NMR
R. Sarkar, M. Baenitz, A. Jesche +2
A detailed P (I=1/2) and As (I=3/2) NMR study on polycrystalline CeFeAsPO alloys is presented. The magnetism of CeFeAsO changes drastically upon P subst…
Strain dependent transport properties of the quasi two-dimensional correlated metal, LaNiO
E. J. Moon, B. A. Gray, M. Kareev +6
We explore the electrical transport and magneto-conductance in quasi two-dimensional strongly correlated ultrathin films of LaNiO (LNO) to investigate the effect of hetero-ep…