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Elastic neutron scattering is used to study the spin correlations in the multiferroic $\rm Mn_{1-x}Fe_{x}WO_4$ with $x=0.035, 0.05$ and 0.10. The noncollinear, incommensurate (ICM) magnetic structure associated with the ferroelectric (FE)…

Strongly Correlated Electrons · Physics 2008-11-03 F. Ye , Y. Ren , J. A. Fernandez-Baca , H. A. Mook , J. W. Lynn , R. P. Chaudhury , Y. -Q. Wang , B. Lorenz , C. W. Chu

The complex magnetic structures, spin-reorientation and associated exchange interactions have been investigate in Er$_{0.5}$Dy$_{0.5}$FeO$_3$ using bulk magnetization, neutron diffraction, specific heat measurements and density functional…

Strongly Correlated Electrons · Physics 2022-07-13 Sarita Rajput , Padmanabhan Balasubramanian , Ankita Singh , Francoise Damay , C. M. N. Kumar , W. Tabis , T. Maitra , V. K. Malik

Inelastic neutron scattering technique is employed to investigate the paramagnetic spin dynamics in a single crystalline sample of the magnetocaloric compound MnFe$_4$Si$_3$. In the investigated temperature range, 1.033$\times T_{C}$ to…

Materials Science · Physics 2025-02-21 N. Biniskos , K. Schmalzl , J. Persson , S. Raymond

Magnetic excitations in \srruo ~ have been studied by inelastic neutron scattering. The magnetic fluctuations are dominated by incommensurate peaks related to the Fermi surface nesting of the quasi-one-dimensional $d_{xz}$- and…

Strongly Correlated Electrons · Physics 2009-11-07 M. Braden , Y. Sidis , P. Bourges , P. Pfeuty , J. Kulda , Z. Mao , Y. Maeno

We have measured resonant soft x-ray diffuse magnetic scattering as a function of temperature in a positively exchange biased Co/FeF2 bilayer and analyzed the data in the distorted wave Born approximation to obtain in-plane charge and…

Materials Science · Physics 2012-03-16 X. Lu , S. Roy , E. Blackburn , Mikhail Erekhinsky , Ivan K. Schuller , J. B. Kortright , S. K. Sinha

We performed elastic neutron scattering and magnetization measurements on Fe(1.07)Te(0.75)Se(0.25) and FeTe(0.7)Se(0.3). Short-range incommensurate magnetic order is observed in both samples. In the former sample with higher Fe content, a…

Superconductivity · Physics 2009-09-11 Jinsheng Wen , Guangyong Xu , Zhijun Xu , Zhi Wei Lin , Qiang Li , W. Ratcliff , Genda Gu , J. M. Tranquada

In order to assess the magnetic ordering process in Fe2VAl and the related material Fe2VGa, we have carried out nuclear magnetic resonance (NMR) and Mossbauer studies. 27Al NMR relaxation measurements covered the temperature range 4 -- 500…

Materials Science · Physics 2009-11-07 C. S. Lue , Yang Li , Joseph H. Ross , George M. Irwin

We report the properties of a triangular lattice iron-chalcogenide antiferromagnet FeAl$_{2}$Se$_{4}$. The spin susceptibility reveals a significant antiferromagnetic interaction with a Curie-Weiss temperature {\Theta}$_{CW}$ ~ -200K and a…

Strongly Correlated Electrons · Physics 2019-02-27 Kunkun Li , Shifeng Jin , Jiangang Guo , Yanping Xu , Yixi Su , Erxi Feng , Yu Liu , Shengqiang Zhou , Tianping Ying , Shiyan Li , Ziqiang Wang , Gang Chen , Xiaolong Chen

We report magnetic susceptibility, specific heat and muon spin relaxation (muSR) experiments on the triangular antiferromagnet La2Ca2MnO7 which develops a genuine two-dimensional, three-sublattice \sqrt{3} \times \sqrt{3} magnetic order…

Strongly Correlated Electrons · Physics 2015-07-08 P. Dalmas de Réotier , C. Marin , A. Yaouanc , T. Douce , A. Sikora , A. Amato , C. Baines

This study examines the increasing complexity in the magnetic properties of small $n$ = 3, 4, 5, 6 spin-1/2 quantum rings. Using an exact diagonalization of the isotropic Heisenberg Hamiltonian with nearest and next-nearest neighbor…

Materials Science · Physics 2016-09-21 J. T. Haraldsen

The spin wave excitations of the geometrically frustrated triangular lattice antiferromagnet (TLA) $\rm CuFeO_2$ have been measured using high resolution inelastic neutron scattering. Antiferromagnetic interactions up to third nearest…

Strongly Correlated Electrons · Physics 2007-10-08 F. Ye , J. A. Fernandez-Baca , R. S. Fishman , Y. Ren , H. J. Kang , Y. Qiu , T. Kimura

Frustrated quasidoublets without time-reversal symmetry can host highly unconventional magnetic structures with continuously distributed order parameters even in a single-phase crystal. Here, we report the comprehensive thermodynamic and…

The crystal and magnetic structures of stoichiometric ZnCr2Se4 have been investigated using synchrotron X-ray and neutron powder diffraction, muon spin relaxation (muSR) and inelastic neutron scattering. Synchrotron X-ray diffraction shows…

Strongly Correlated Electrons · Physics 2017-04-12 P. Zajdel , W-Y. Li , W. Van Beek , A. Lappas , A. Ziolkowska , S. Jaskiewicz , C. Stock , M. A. Green

We report inelastic neutron scattering measurements of low energy ($\hbar \omega < 10$ meV) magnetic excitations in the "11" system Fe$_{1+y}$Te$_{1-x}$Se$_{x}$. The spin correlations are two-dimensional (2D) in the superconducting samples…

We present an inelastic neutron scattering study on single-crystalline LiFeAs devoted to the characterization of the incommensurate antiferromagnetic fluctuations at $\mathbf{Q}=(0.5\pm\delta, 0.5\mp\delta, q_l)$. Time-of-flight…

Superconductivity · Physics 2015-06-22 N. Qureshi , P. Steffens , D. Lamago , Y. Sidis , O. Sobolev , R. A. Ewings , L. Harnagea , S. Wurmehl , B. Büchner , M. Braden

FeGe_2, and lightly doped compounds based on it, have a Fermi surface driven instability which drive them into an incommensurate spin density wave state. Studies of the temperature and magnetic field dependence of the resistivity have been…

Strongly Correlated Electrons · Physics 2009-10-28 T. E. Mason , C. P. Adams , S. A. M. Mentink , E. Fawcett , A. Z. Menshikov , C. D. Frost , J. B. Forsyth , T. G. Perring , T. M. Holden

We report a mean-field theoretical study of a triangular lattice magnet NiGa$_2$S$_4$. Specifically, spiral mean-field theory is applied to a 17-band $d$-$p$ model constructed from the maximally localized Wannier functions. Our…

Strongly Correlated Electrons · Physics 2020-01-20 Takuji Nomura , Yuji Yamamoto , Kenji Yoshii

Magnetic correlations in all four phases of pure and doped vanadium sesquioxide V_2O_3 have been examined by magnetic thermal neutron scattering. While the antiferromagnetic insulator can be accounted for by a Heisenberg localized spin…

Strongly Correlated Electrons · Physics 2009-10-31 Wei Bao , C. Broholm , G. Aeppli , S. A. Carter , P. Dai , T. F. Rosenbaum , J. M. Honig , P. Metcalf , S. F. Trevino

The magnetic structure of the intermetallic compound EuGa$_4$ was investigated using single-crystal neutron diffraction with the time-of-flight (TOF) Laue technique on the new diffractometer SENJU at MLF of J-PARC. In spite of high neutron…

Magnetic excitations and magnetic structure of EuRbFe$_4$As$_4$ were investigated by inelastic neutron scattering (INS), neutron diffraction, and random phase approximation (RPA) calculations. Below the superconducting transition…