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The electronic structure of the ferromagnetic semiconductor EuO is investigated by means of spin- and angle-resolved photoemission spectroscopy (spin-ARPES) and density functional theory. EuO exhibits unique properties of hosting both…

The ferromagnetic (FM) nature of Nd2Fe14B has been investigated with muon spin rotation and relaxation ({\mu}^+SR) measurements on an aligned, sintered plate-shaped sample. A clear muon spin precession frequency (f_{FM}) corresponding to…

We report on the evolution of the average and depth-dependent magnetic order in thin film samples of biaxially stressed and electron-doped EuTiO$_3$ for samples across a doping range $<$0.1 to 7.8 $\times 10^{20}$ cm$^{-3}$. Under an…

Strongly Correlated Electrons · Physics 2020-05-22 Zach Porter , Ryan F. Need , Kaveh Ahadi , Yang Zhao , Zhijun Xu , Brian J. Kirby , Jeffrey W. Lynn , Susanne Stemmer , Stephen D. Wilson

Measurements of the in-plane magnetic field penetration depth \lambda_{ab} in Fe-based superconductors with the nominal composition SmFeAsO_0.85 (T_c\simeq52K) and NdFeAsO_0.85 (T_c\simeq51K) were carried out by means of muon-spin-rotation.…

We present zero field muon spin lattice relaxation measurements of a Dysprosium triangle molecular magnet. The local magnetic fields sensed by the implanted muons indicate the coexistence of static and dynamic internal magnetic fields below…

Strongly Correlated Electrons · Physics 2015-05-20 Z. Salman , S. R. Giblin , Y. Lan , A. K. Powell , R. Scheuermann , R. Tingle , R. Sessoli

Muon spin rotation (muSR) experiments reveal unconventional spin freezing and dynamics in the two-dimensional (2D) triangular lattice antiferromagnet NiGa2S4. Long-lived disordered Ni-spin freezing (correlation time > 10-6 s at 2 K) sets in…

Strongly Correlated Electrons · Physics 2009-11-13 D. E. MacLaughlin , Y. Nambu , S. Nakatsuji , R. H. Heffner , Lei Shu , O. O. Bernal , K. Ishida

Transverse-field muon-spin rotation ($\mu$SR) experiments were performed on a single crystal sample of the non-centrosymmetric system MnSi. The observed angular dependence of the muon precession frequencies matches perfectly the one of the…

Strongly Correlated Electrons · Physics 2014-06-11 A. Amato , P. Dalmas de Réotier , D. Andreica , A. Yaouanc , A. Suter , G. Lapertot , I. M. Pop , E. Morenzoni , P. Bonfà , F. Bernardini , R. De Renzi

We have studied the impact of the magnetic field on the electromagnon excitations in TbMnO3 crystal. Applying magnetic field along the c axis, we show that the electromagnons transform into pure antiferromagnetic modes, losing their polar…

Materials Science · Physics 2011-07-06 P. Rovillain , M. Cazayous , Y. Gallais , M-A. Measson , A. Sacuto , H. Sakata , M. Mochizuki

We investigate the magnetism in tilted fermionic Mott insulators. With a small tilt, the fermions are still localized and form a Mott-insulating state, where the localized spins interact via antiferromagnetic exchange coupling. While the…

Quantum Gases · Physics 2025-11-26 Kazuaki Takasan , Masaki Tezuka

Magnetostriction drives a rhombohedral distortion in the cubic rock salt antiferromagnet MnO at the N\'eel temperature $T_{N}=118$ K. As an unexpected consequence we show that this distortion acts to localize the site of an implanted muon…

We report new zero-field muon spin relaxation and neutron spin echo measurements in ferromagnetic (FM) (La,Ca)MnO3 which taken together suggest two spatially separated regions in close proximity possessing very different Mn-ion spin…

Strongly Correlated Electrons · Physics 2009-10-31 R. H. Heffner , J. E. Sonier , D. E. MacLaughlin , G. J. Nieuwenhuys , G. Ehlers , F. Mezei , S-W. Cheong , J. S. Gardner , H. Roder

Precision continuous-wave NMR measurements have been carried out over the entire magnetization curve of EuO and are presented in tabular form. Two very closely spaced resonances are observed and are attributed to domain and domain-wall…

Materials Science · Physics 2010-05-12 N. Bykovetz , B. Birang , J. Klein , C. L. Lin

Dynamic properties of NiFe thin films on PMN-PT piezoelectric substrate are investigated using the spin-diode method. Ferromagnetic resonance (FMR) spectra of microstrips with varying width are measured as a function of magnetic field and…

In this work we report results of ferromagnetic resonance studies of a 6% 15 nm (Ga,Mn)As layer, deposited on (001)-oriented GaAs. The measurements were performed with in-plane oriented magnetic field, in the temperature range between 5K…

Mesoscale and Nanoscale Physics · Physics 2023-07-19 M. W. Gutowski , W. Stefanowicz , O. Proselkov , J. Sadowski , M. Sawicki , R. Zuberek

Muon spin spectroscopy has been used to study in detail the onset of large-moment antiferromagnetism (LMAF) in UPt_{3} as induced by Th substitution. Zero-field experiments have been carried out on a series of polycrystalline…

Strongly Correlated Electrons · Physics 2011-10-04 M. J. Graf , A. de Visser , C. P. Opeil , J. C. Cooley , J. L. Smith , A. Amato , C. Baines , F. Gygax , A. Schenck

We have performed a muon spin rotation study on polycrystalline samples of electron-doped layered manganites, La$_{2-2x}$Sr$_{1+2x}$Mn$_2$O$_7$ (0.4< x<1), in order to investigate the local magnetic structure and spin dynamics. Our results…

Strongly Correlated Electrons · Physics 2007-05-23 A. I. Coldea , S. J. Blundell , C. A. Steer , J. F. Mitchell , F. L. Pratt

Muon spin relaxation experiments have been carried out in the Kondo compound PrInAg_2. The zero-field muon relaxation rate is found to be independent of temperature between 0.1 and 10 K, which rules out a magnetic origin (spin freezing or a…

Strongly Correlated Electrons · Physics 2019-08-17 D. E. MacLaughlin , R. H. Heffner , G. J. Nieuwenhuys , P. C. Canfield , A. Amato , C. Baines , A. Schenck , G. M. Luke , Y. Fudamoto , Y. J. Uemura

Using muon spin rotation, well-defined bulk ~ 100% magnetic phases in NaxCoO2 are revealed. A novel magnetic phase is detected for x = 0.85 with the highest transition temperature ever observed for x >= 0.75. This stresses the diversity of…

Strongly Correlated Electrons · Physics 2009-11-11 P. Mendels , D. Bono , J. Bobroff , G. Collin , D. Colson , N. Blanchard , H. Alloul , I. Mukhamedshin , F. Bert , A. Amato , A. D. Hillier

We present a systematic investigation of muon-stopping states in superconductors that reportedly exhibit spontaneous magnetic fields below their transition temperatures due to time-reversal symmetry breaking. These materials include…

Superconductivity · Physics 2022-01-11 B. M. Huddart , I. J. Onuorah , M. M. Isah , P. Bonfà , S. J. Blundell , S. J. Clark , R. De Renzi , T. Lancaster

We employ the combination of the density functional and the dynamical mean-field theory (LDA+DMFT) to investigate the electronic structure and magnetic properties of SrCoO3, monocrystal of which were prepared recently. Our calculations lead…

Strongly Correlated Electrons · Physics 2012-09-25 J. Kuneš , V. Křápek , N. Parragh , G. Sangiovanni , A. Toschi , A. V. Kozhevnikov
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