123 citations · 1.5k across the 60 of their papers we have counts for
20 papers · 1 filter
Observation of ubiquitous charge correlations and hidden quantum critical point in hole-doped kagome superconductors
Ilija K. Nikolov, Giuseppe Allodi, Adrien Rosuel +9
The interplay between superconductivity and charge-density wave (CDW) order, and its evolution with carrier density, is central to the physics of many quantum materials, notably hi…
Spin-orbital Jahn-Teller bipolarons
Lorenzo Celiberti, Dario Fiore Mosca, Giuseppe Allodi +11
Polarons and spin-orbit (SO) coupling are distinct quantum effects that play a critical role in charge transport and spin-orbitronics. Polarons originate from strong electron-phono…
Magnetostriction-Driven Muon Localization in an Antiferromagnetic Oxide
Pietro Bonfà, Ifeanyi John Onuorah, Franz Lang +9
Magnetostriction drives a rhombohedral distortion in the cubic rock salt antiferromagnet MnO at the Néel temperature K. As an unexpected consequence we show that this d…
Pressure-Induced Antiferromagnetic Dome in the Heavy-Fermion System
G. Lamura, I. J. Onuorah, P. Bonfà +17
In the heavy-fermion system , the interplay of crystal-field splitting, Kondo effect, and Ruderman-Kittel-Kasuya-Yosida interactions leads to complex chemical…
Muon contact hyperfine field in metals: A DFT calculation
Ifeanyi John Onuorah, Pietro Bonfà, Roberto De Renzi
In positive muon spin rotation and relaxation spectroscopy it is becoming nowadays customary to take advantage of Density Functional Theory (DFT) based computational methods to aid…
Ferromagnetic Quantum Critical Point Avoided by the Appearance of Another Magnetic Phase in LaCrGe under Pressure
Valentin Taufour, Udhara S. Kaluarachchi, Rustem Khasanov +14
The temperature-pressure phase diagram of the ferromagnet LaCrGe is determined for the first time from a combination of magnetization, muon-spin-rotation and electrical resisti…
Magnetic phase diagram of LaSrCoO revised using muon-spin relaxation
R. C. Williams, F. Xiao, T. Lancaster +10
We report the results of a muon-spin relaxation (SR) investigation of LaSrCoO, an antiferromagnetic insulating series which has been shown to support charge…
Understanding the SR spectra of MnSi without magnetic polarons
A. Amato, P. Dalmas de Réotier, D. Andreica +8
Transverse-field muon-spin rotation (SR) experiments were performed on a single crystal sample of the non-centrosymmetric system MnSi. The observed angular dependence of the muo…
Effect of external pressure on the magnetic properties of CoAsO ( = La, Pr, Sm): a SR study
G. Prando, S. Sanna, R. Khasanov +6
We report on a detailed investigation of the itinerant ferromagnets LaCoAsO, PrCoAsO and SmCoAsO performed by means of muon spin spectroscopy upon the application of external hydro…
Band filling effect on polaron localization in LaCaSr)MnO manganites
G. Allodi, R. De Renzi, K. Zheng +6
We report on an a SR and Mn NMR investigation of the magnetic order parameter as a function of temperature in the optimally doped La(CaSr)MnO$…
Playing quantum hide-and-seek with the muon: localizing muon stopping sites
J. S. Möller, P. Bonfà, D. Ceresoli +8
One of the most fundamental limitations of a muon-spin relaxation experiment can be the lack of knowledge of the implantation site of the muon and the uncertainty about the muon's…
Stripe disorder and dynamics in the hole-doped antiferromagnetic insulator La5/3Sr1/3CoO4
T. Lancaster, S. R. Giblin, G. Allodi +11
We report on an investigation into the dynamics of the stripe phase of La5/3Sr1/3CoO4, a material recently shown to have an hour-glass magnetic excitation spectrum. A combination o…
Magnetic properties of spin diluted iron pnictides from muSR and NMR in LaFe1-xRuxAsO
Pietro Bonfà, Pietro Carretta, Samuele Sanna +7
The effect of isoelectronic substitutions on the microscopic properties of LaFe1-xRuxAsO, for 0< x< 0.8, has been investigated by means of muSR and 139La NMR. It was found that Ru…
Evidence for impurity-induced frustration in La2CuO4
P. Carretta, G. Prando, S. Sanna +3
Zero-field muon spin rotation and magnetization measurements were performed in La2Cu{1-x}MxO4, for 0<x< 0.12, where Cu2+ is replaced either by M=Zn2+ or by M=Mg2+ spinless impurity…
Magnetic order, metamagnetic transitions, and low-temperature spin freezing in Ca3Co2O6: an NMR study
G. Allodi, R. De Renzi, S. Agrestini +2
We report on a 59Co NMR investigation of the trigonal cobaltate Ca3Co2O6 carried out on a single crystal, providing precise determinations of the electric field gradient and chemic…
Competing orders suppressed by disorder around a hidden quantum critical point in cuprate high Tc superconductors
S. Sanna, F. Coneri. A. Rigoldi, G. Concas +2
We report extensive muon spin rotation measurements on the lightly doped Y1-xCaxBa2Cu3O6+y compound, which allows us to disentangle the effect of disorder, controlled by random Ca2…
Evidence of two distinct charge carriers in underdoped high Tc cuprates
S. Sanna, F. Coneri, A. Rigoldi +2
We present results on heavily underdoped Y_1-xCa_xBa_2Cu_3O_6+y which provide the evidence that the doping mechanism (cation substitution or oxygen loading) directly determines whe…
Muon Spin Spectroscopy evidence of the violation of Anderson condition in magnetite
M. Bimbi, G. Allodi, R. De Renzi +2
We present new muon spectroscopy data on a FeO single crystal, revealing different spin precession patterns in five distinct temperature ranges. A careful analysis of the l…
Evidence of ultra-slow polaron dynamics in low-doped manganites from 139La NMR-NQR and muon spin rotation
G. Allodi, M. Cestelli Guidi, R. De Renzi +2
We report a 139La NMR investigation of low-doped insulating manganite samples (LaMnO(3+y) and La(1-x)Ca(x)MnO(3+y)) as a function of temperature. A volume fraction with fast nuclea…
Field-induced segregation of ferromagnetic nano-domains in PrSrMnO, detected by Mn NMR
G. Allodi, R. De Renzi, M. Solzi +3
The antiferromagnetic manganite PrSrMnO was investigated at low temperature by means of magnetometry and Mn NMR. A field-induced transition to a ferromag…