947 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR486 papers
- Université de StrasbourgFR421 papers
- Institut de Science et d'Ingénierie SupramoléculairesFR85 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR40 papers
- Université Paris-SaclayFR33 papers
- Universität InnsbruckAT26 papers
- CEA Paris-SaclayFR25 papers
- Karlsruhe Institute of TechnologyDE25 papers
- University of AugsburgDE22 papers
- Université de LorraineFR21 papers
- Institut Jean LamourFR20 papers
- Synchrotron SOLEILFR19 papers
43 papers · 1 filter
Antisymmetric Raman response
Mattia Udina, Indranil Paul
We develop the theory of antisymmetric Raman response, defined as the difference between the Raman signals of two scattering geometries related by an exchange of mutually perpendic…
Spin excitations in Nd1-xSrxNiO2 and YBa2Cu3O7-delta: the influence of Hubbard U
Francesco Rosa, Leonardo Martinelli, Guillaume Krieger +10
We use Resonant Inelastic X-ray Scattering (RIXS) to compare the doping dependence of magnetic excitations of an Infinite-Layer nickelate to those of a prototypical superconducting…
Ultrafast spin current generation in ferromagnetic thin films
Giovanni Manfredi, Jérôme Hurst, Paul-Antoine Hervieux
Spin currents have been shown to play a key role in the ultrafast laser-driven demagnetization process in ferromagnetic thin films. Here, we show that an oscillating spin current c…
Two holes in a two-dimensional quantum antiferromagnet: A variational study based on entangled-plaquette states
Fabio Mezzacapo, Adriano Angelone, Guido Pupillo
We show that the entangled-plaquette variational ansatz can be adapted to study the two-dimensional model in the presence of two mobile holes. Specifically, we focus on a squ…
Effective Theory and Breakdown of Conformal Symmetry in a Long-Range Quantum Chain
Luca Lepori, Davide Vodola, Guido Pupillo +2
We deal with the problem of studying the effective theories and the symmetries of long-range models around critical points. We focus in particular on the Kitaev chain with long-ran…
Topological Massive Dirac Edge Modes and Long-Range Superconducting Hamiltonians
O. Viyuela, D. Vodola, G. Pupillo +1
We discover novel topological effects in the one-dimensional Kitaev chain modified by long-range Hamiltonian deformations in the hopping and pairing terms. This class of models dis…
Neutron spectroscopic study of crystal-field excitations and the effect of the crystal field on dipolar magnetism in LiF ( = Gd, Ho, Er, Tm, and Yb)
P. Babkevich, A. Finco, M. Jeong +12
We present a systematic study of the crystal field interactions in the LiF, = Gd, Ho, Er, Tm and Yb, family of rare-earth magnets. Using detailed inelastic neutron scatt…
Long-range Ising and Kitaev Models: Phases, Correlations and Edge Modes
Davide Vodola, Luca Lepori, Elisa Ercolessi +1
We analyze the quantum phases, correlation functions and edge modes for a class of spin-1/2 and fermionic models related to the 1D Ising chain in the presence of a transverse field…
Competing superconducting instabilities in the one-dimensional p-band degenerate cold fermionic system
V. Bois, S. Capponi, P. Lecheminant +1
The zero-temperature phase diagram of -orbital two-component fermionic system loaded into a one-dimensional optical lattice is mapped out by means of analytical and numerical te…
Phase diagrams of one-dimensional half-filled two-orbital SU(N) cold fermions systems
V. Bois, S. Capponi, P. Lecheminant +2
We investigate possible realizations of exotic SU(N) symmetry-protected topological (SPT) phases with alkaline-earth cold fermionic atoms loaded into one-dimensional optical lattic…
From itinerant to local transformation and critical point in Ni-rich Ce_2(Ni_{1-y}Pd_y)_2Sn
J. G. Sereni, G. Schmerber, M. Gomez Berisso +1
Structural, magnetic (M) and thermal (C_m) studies on Ce_2(Ni_{1-y}Pd_y)_2Sn alloys are presented within the 0<y<0.55 range of concentration, showing evidences for itinerant to loc…
Kitaev chains with long-range pairing
Davide Vodola, Luca Lepori, Elisa Ercolessi +2
We propose and analyze a generalization of the Kitaev chain for fermions with long-range -wave pairing, which decays with distance as a power-law with exponent . Using the in…
Semimetal-superfluid quantum phase transitions in 2D and 3D lattices with Dirac points
Gabriel Mazzucchi, Luca Lepori, Andrea Trombettoni
We study the superfluid properties of attractively interacting fermions hopping in a family of 2D and 3D lattices in the presence of synthetic gauge fields having π-flux per plaque…
Adiabatic Tracking of a State: a New Route to Nonequilibrium Physics
M. Moliner, P. Schmitteckert
We present a novel numerical approach to track the response of a quantum system to an external perturbation that is progressively switched-on. The method is applied, within the fra…
Quantum phase transitions in multileg spin ladders with ring exchange
S. Capponi, P. Lecheminant, M. Moliner
Four-spin exchange interaction has been raising intriguing questions regarding the exotic phase transitions it induces in two-dimensional quantum spin systems. In this context, we…
Scaling of the entanglement spectrum near quantum phase transitions
L. Lepori, G. De Chiara, A. Sanpera
The entanglement spectrum describing quantum correlations in many-body systems has been recently recognized as a key tool to characterize different quantum phases, including topolo…
Ultrafast Magneto-Acoustics in Nickel Films
Ji-Wan Kim, Mircea Vomir, Jean-Yves Bigot
We report about the existence of magneto-acoustic pulses propagating in a 200-nm-thick ferromagnetic nickel film excited with 120 fs laser pulses. They result from the coupling bet…
How do spins interact coherently with ultrashort laser pulses ?
Hélène Vonesch, Jean-Yves Bigot
We investigate the interaction of femtosecond laser pulses with spins including relativistic corrections. The time-ordered magneto-optical signals corresponding to a pump-probe con…
Tri-critical point and suppression of the Shastry-Sutherland phase in CePdSn by Ni doping
J. G. Sereni, G. Schmerber, M. Gómez Berisso +2
Structural, magnetization and heat capacity measurements were performed on Ce(PdNi)Sn () alloys, covering the full range of the MoFeB$_2…
Ferromagnetic frustrated spin systems on the square lattice: a Schwinger boson study
H. Feldner, D. C. Cabra, G. L. Rossini
We study a ferromagnetic Heisenberg spin system on the square lattice, with nearest neighbors interaction J_1 frustrated by second J_2 and third J_3 neighbors antiferromagnetic int…
Muon spin relaxation investigation of magnetic ordering in the hybrid organic-inorganic perovskites [(CH3)2NH2]M(HCOO)3, M = Ni,Co,Mn,Cu
P. J. Baker, T. Lancaster, I. Franke +6
Muon spin relaxation measurements are reported on samples of dimethylammonium metal formates containing magnetic divalent nickel, cobalt, manganese, and copper ions. These hybrid o…
Suppression of the Shastry-Sutherland phase in CePdSn at a field induced critical point
J. G. Sereni, M. Gomez Berisso, G. Schmerber +2
The magnetic phase diagram of CePdSn is investigated through the field dependence of thermal, transport and magnetic measurements performed at low temperature. The upper tr…
Magnetism of Finite Graphene Samples: Mean-Field Theory compared with Exact Diagonalization and Quantum Monte Carlo Simulation
Hélène Feldner, Zi Yang Meng, Andreas Honecker +3
The magnetic properties of graphene on finite geometries are studied using a self-consistent mean-field theory of the Hubbard model. This approach is known to predict ferromagnetic…
Coexisting orders in the quarter-filled Hubbard chain with elastic deformations
H. D. Rosales, D. C. Cabra
The electronic properties of the quarter-filled extended Peierls-Holstein-Hubbard model that includes lattice distortions and molecular deformations are investigated theoretically…