244 citations · 731 across the 13 of their papers we have counts for
13 papers
Probing the real-space density of spin-entangled electrons
Federico Pisani, Leonie Spitz, Libor Vojáček +12
On the textbook example of an isolated antiferromagnetic Heisenberg dimer, we demonstrate that the magnetic form factor and the magnetic electron density distribution can be extrac…
Confined and deconfined spinon excitations in the rectangular-lattice quantum antiferromagnet
N. E. Shaik, E. Fogh, B. Dalla Piazza +3
Fractionalization remains one of the most fascinating manifestations of strong interactions in quantum many-body systems. In quantum magnetism, the existence of spinons -- collecti…
Phase diagram of diluted Ising ferromagnet LiHoYF
P. Babkevich, N. Nikseresht, I. Kovacevic +8
We present a systematic study of the phase diagram of LiHoYF () Ising ferromagnets obtained from neutron scattering measurements and mean-field calculatio…
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…
Spin-Orbit-Induced Orbital Excitations in Sr2RuO4 and Ca2RuO4: A Resonant Inelastic X-ray Scattering Study
C. G. Fatuzzo, M. Dantz, S. Fatale +14
High-resolution resonant inelastic X-ray scattering (RIXS) at the oxygen K-edge has been used to study the orbital excitations of Ca2RuO4 and Sr2RuO4. In combination with linear di…
Fractional excitations in the square-lattice quantum antiferromagnet
B. Dalla Piazza, M. Mourigal, N. B. Christensen +7
The square-lattice quantum Heisenberg antiferromagnet displays a pronounced anomaly of unknown origin in its magnetic excitation spectrum. The anomaly manifests itself only for sho…
Non-equilibrium hysteresis and spin relaxation in the mixed-anisotropy dipolar coupled spin-glass LiHoErF
J. O. Piatek, I. Kovacevic, P. Babkevich +5
We present a study of the model spin-glass LiHoErF using simultaneous AC susceptibility, magnetization and magnetocaloric effect measurements along with small a…
Quantum and thermal ionic motion, oxygen isotope effect, and superexchange distribution in LaCuO
P. S. Häfliger, S. Gerber, R. Pramod +11
We study the zero-point and thermal ionic motion in LaCuO by means of high-resolution neutron diffraction experiments. Our results demonstrate anisotropic motion of O and t…
The electronic structure of the high-symmetry perovskite iridate Ba2IrO4
S. Moser, L. Moreschini, A. Ebrahimi +11
We report angle-resolved photoemission (ARPES) measurements, density functional and model tight-binding calculations on BaIrO (Ba-214), an antiferromagnetic ( K) i…
Phase diagram with enhanced spin-glass region of mixed Ising / XY magnets LiHoErF
J. O. Piatek, B. Dalla Piazza, N. Nikseresht +8
We present the experimental phase diagram of LiHoErF, a dilution series of dipolar-coupled model magnets.The phase diagram was determined using a combination of AC…
Spin excitations in a single LaCuO layer
M. P. M. Dean, R. S. Springell, C. Monney +9
The dynamics of S=1/2 quantum spins on a 2D square lattice lie at the heart of the mystery of the cuprates \cite{Hayden2004,Vignolle2007,Li2010,LeTacon2011,Coldea2001,Headings2010,…
Unified quantitative model for magnetic and electronic spectra of the undoped cuprates
B. Dalla Piazza, M. Mourigal, M. Guarise +4
Using low-energy projection of the one-band t-t'-t"-Hubbard model we derive an effective spin-Hamiltonian and its spin-wave expansion to order 1/S. We fit the spin-wave dispersion…
Measurement of magnetic excitations in the two-dimensional antiferromagnetic Sr2CuO2Cl2 insulator using resonant x-ray scattering:Evidence for extended interactions
M. Guarise, B. Dalla Piazza, M. Moretti Sala +13
Using high-resolution resonant inelastic x-ray scattering (RIXS), we performed a momentum-resolved study of magnetic excitations in the model spin-1/2 2D antiferromagnetic insulato…