61 citations · 468 across the 26 of their papers we have counts for
26 papers
Anomalous field evolution of the mixed-state linewidth in the second superconducting dome of LaFeAsO ()
Rustem Khasanov, Pierre Dalmas de Réotier, Samuele Sanna +9
We report a transverse-field muon-spin rotation/relaxation (SR) study of the internal-field distribution in the mixed state of LaFeAsOF and LaFeAsOH$_…
Magnetic properties of Ge, Re and Cr substituted FeSiB
M. Casadei, M. M. Isah, R. Cabassi +8
One of the possible approaches to decrease the demand for critical elements such as rare earths is to develop new sustainable magnets. Iron-based materials are suitable for gap mag…
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…
Fast recovery of the pristine magnetic and structural phases in superconducting LaFeAsOF by Mn/Fe substitution
S. Sanna, P. Carretta, M. Moroni +5
We report on an experimental study of the effect of Mn impurities in the optimally doped LaFeAsOF compound. The results show that a very tiny amount of Mn, of the…
Singling out the effect of quenched disorder in the phase diagram of cuprates
R. De Renzi, F. Coneri, F. Mezzadri +7
We investigate the specific influence of structural disorder on the suppression of antiferromagnetic order and on the emergence of cuprate superconductivity. We single out pure dis…
Role of magnetic dopants in the phase diagram of Sm1111 pnictides: The Mn case
G. Lamura, T. Shiroka, S. Bordignon +12
The deliberate insertion of magnetic Mn dopants in the Fe sites of the optimally-doped SmFeAsO0.88-F0.12 iron-based superconductor can modify in a controlled way its electronic pro…
Fast recovery of the stripe magnetic order by Mn/Fe substitution in F-doped LaFeAsO superconductors
M. Moroni, P. Carretta, G. Allodi +8
As Nuclear Magnetic (NMR) and Quadrupolar (NQR) Resonance were used, together with Mössbauer spectroscopy, to investigate the magnetic state induced by Mn for Fe substitutio…
Competing effects of Mn and Y doping on the low-energy excitations and phase diagram of LaYFeMnAsOF iron-based superconductors
M. Moroni, S. Sanna, G. Lamura +8
Muon Spin Rotation (SR) and F Nuclear Magnetic Resonance (NMR) measurements were performed to investigate the effect of Mn for Fe substitutions in LaYFe$_{1…
Persistence of slow dynamics in Tb(OETAP) single molecule magnets embedded in conducting polymers
Tomas Orlando, Marta Filibian, Samuele Sanna +5
The spin dynamics of Tb(OETAP) single ion magnets was investigated by means of muon spin resonance (SR) both in the bulk material as well as when the system is embedded into…
Enhancement of low-frequency fluctuations and superconductivity breakdown in Mn-doped LaYFeAsOF superconductors
F. Hammerath, M. Moroni, L. Bossoni +9
F NMR measurements in optimally electron-doped LaYFeMnAsOF superconductors are presented. In these materials the effect of Mn d…
Spin Gap in the Single Spin-1/2 Chain Cuprate SrCaCuO
F. Hammerath, E. M. Brüning, S. Sanna +7
We report Cu nuclear magnetic resonance and muon spin rotation measurements on the S=1/2 antiferromagnetic Heisenberg spin chain compound SrCaCuO. An exp…
The poisoning effect of Mn in LaFe(1-x)Mn(x)AsO(0.89)F(0.11): unveiling a quantum critical point in the phase diagram of iron-based superconductors
F. Hammerath, P. Bonfá, S. Sanna +5
A superconducting-to-magnetic transition is reported for LaFeMnAsOF where a per thousand amount of Mn impurities is dispersed. By employing local spec…
s-wave pairing in the optimally-doped LaO0.5F0.5BiS2 superconductor
G. Lamura, T. Shiroka, P. Bonfa +11
We report on the magnetic and superconducting properties of LaO0.5F0.5BiS2 by means of zero- (ZF) and transverse-field (TF) muon-spin spectroscopy measurements (uSR). Contrary to p…
Soft x-rays absorption and high-resolution powder x-ray diffraction study of superconducting CaxLa(1-x)Ba(1.75-x)La(0.25+x)Cu3Oy system
S. Agrestini, S. Sanna, K. Zheng +5
We have studied the electronic structure of unoccupied states measured by O K-edge and Cu L-edge x-ray absorption spectroscopy (XAS), combined with crystal structure studied by hig…
Structural properties and phase diagram of the system
A. Martinelli, A. Palenzona, I. Pallecchi +5
Structural refinement, lattice microstrain and spontaneous strain analyses have been carried out and a phase diagram has been drawn.
A view from inside iron-based superconductors
P. Carretta, R. De Renzi, G. Prando +1
Muon spin spectroscopy is one of the most powerful tools to investigate the microscopic properties of superconductors. In this manuscript, an overview on some of the main achieveme…
Magnetic glassy phase in FeSeTe single crystals
G. Lamura, T. Shiroka, P. Bonfà +9
The evolution of the magnetic order in FeSeTe crystals as a function of Se content was investigated by means of ac/dc magnetometry and muon-spin spectroscopy. Experimental results…
Common effect of chemical and external pressures on the magnetic properties of RECoPO (RE = La, Pr)
G. Prando, P. Bonfà, G. Profeta +11
We report a detailed investigation of RECoPO (RE = La, Pr) and LaCoAsO materials performed by means of muon spin spectroscopy. Zero-field measurements show that the electrons local…
AC susceptibility investigation of vortex dynamics in nearly-optimally doped REFeAsOF superconductors (RE = La, Ce, Sm)
G. Prando, P. Carretta, R. De Renzi +4
Ac susceptibility and static magnetization measurements were performed in the nearly-optimally doped LaFeAsOF and CeFeAsOF superconductors, comple…
Correlated trends of coexisting magnetism and superconductivity in optimally electron-doped oxy-pnictides
S. Sanna, P. Carretta, P. Bonfà +7
We report on the recovery of the short-range static magnetic order and on the concomitant degradation of the superconducting state in optimally F-doped SmFe_(1-x)Ru_(x)AsO_0.85F_0.…
Long- to short-range magnetic order in fluorine-doped CeFeAsO
T. Shiroka, G. Lamura, S. Sanna +13
The evolution of the antiferromagnetic order parameter in CeFeAsO_{1-x}F_{x} as a function of the fluorine content x was investigated primarily via zero-field muon-spin spectroscop…
Superconducting phase fluctuations in SmFeAsOF from diamagnetism at low magnetic field above
G. Prando, A. Lascialfari, A. Rigamonti +4
Superconducting fluctuations (SF) in SmFeAsOF (characterized by superconducting transition temperature K) are investigated by means of isotherma…
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…
Vortex dynamics and irreversibility line in optimally doped SmFeAsOF from ac susceptibility and magnetization measurements
G. Prando, P. Carretta, R. De Renzi +4
Ac susceptibility and static magnetization measurements were performed in the optimally doped SmFeAsOF superconductor. The field - temperature phase diagram of the…