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The crystal structure and magnetic correlations in triangular antiferromagnet FeGa$_2$S$_4$ are studied by x-ray diffraction, magnetic susceptibility, neutron diffraction and neutron inelastic scattering. We report significant mixing at the…

Structural, transport and magnetic properties of single-crystalline samples of a praseodymium-based cubic compound PrMgNi4 were studied. The single-crystal X-ray structural analysis revealed that Mg atoms are substituted for the Pr atoms at…

Strongly Correlated Electrons · Physics 2019-07-24 Yuka Kusanose , Takahiro Onimaru , Gyeong-Bae Park , Yu Yamane , Kazunori Umeo , Toshiro Takabatake , Naomi Kawata , Tsutomu Mizuta

Magnetic structure evolution of multiferroic hexagonal $YMn_{1-x}Fe_{x}O_{3}$ (${x} = 0, 0.05,$ and $0.1$) has been studied by carrying out detailed temperature-dependent neutron diffraction at zero- and 5T-fields. Thermodynamic data…

Materials Science · Physics 2017-07-26 Sonu Namdeo , S. S. S. Rao , S. D. Kaushik , V. Siruguri , A. M. Awasthi

KCrF3 represents another prototypical orbital-ordered perovskite, where Cr2+ possesses the same electronic configuration of 3d4 as that of strongly Jahn-Teller distorted Mn3+ in many CMR manganites. The crystal and magnetic structures of…

Strongly Correlated Electrons · Physics 2013-09-30 Y. Xiao , Y. Su , H. -F. Li , C. M. N. Kumar , R. Mittal , J. Persson , A. Senyshyn , K. Gross , Th. Brueckel

The novel magnetic phase diagram of the $Cs_2CuCl_{4-x}Br_x$ mixed system is established by means of single crystal neutron diffraction in the lowest temperature region and zero magnetic field. Two long-range ordered magnetic phases exist…

Frustrated magnets host the promises of material realizations of new paradigm of quantum matter, while direct comparison of unbiased model calculations with experimental measurements is still very challenging. Here, we design and implement…

Strongly Correlated Electrons · Physics 2020-03-03 Han Li , Yuan Da Liao , Bin-Bin Chen , Xu-Tao Zeng , Xian-Lei Sheng , Yang Qi , Zi Yang Meng , Wei Li

The precise crystal symmetry and hence the emergence of the electric polarization still remains an open question in the multiferroic materials $R$Mn$_2$O$_5$ ($R$ = rare-earth, Bi, Y). While previous diffraction studies have indicated that…

Strongly Correlated Electrons · Physics 2022-06-22 N. Narayanan , P. J. Graham , P. Rovillain , J. O'Brien , J. Bertinshaw , S. Yick , J. Hester , A. Maljuk , D. Souptel , B. Büchner , D. Argyriou , C. Ulrich

Magnetic orders of non-Heisenberg Tsai-type 1/1 approximant crystals (ACs) in the Au-Ga-Dy system were studied through bulk magnetization, neutron diffraction, and inelastic neutron scattering techniques. The results uncovered noncoplanar,…

We examine a novel type of disorder in quantum antiferromagnets. Our model consists of localized spins with antiferromagnetic exchanges on a bipartite quasiperiodic structure, which is geometrically disordered in such a way that no…

Strongly Correlated Electrons · Physics 2015-05-13 Attila Szallas , Anuradha Jagannathan , Stefan Wessel

Neutron scattering experiments have been performed on the ternary rare-earth diborocarbide Ce$^{11}$B$_2$C$_2$. The powder diffraction experiment confirms formation of a long-range magnetic order at $T_{\rm N} = 7.3$ K, where a sinusoidally…

Strongly Correlated Electrons · Physics 2009-11-13 Isao Nakanowatari , Rei Morinaga , Takahiro Onimaru , Taku J. Sato

The half-Heusler alloy RuMnGa having valence electron count (VEC) 18 has recently been theoretically proposed to exhibit compensated ferrimagnetic (CFiM) character instead of the expected nonmagnetic ground state. On the other hand, a…

We explore the effects of noncommuting applied fields on the ground-state ordering of the quasi-one-dimensional spin-1/2 XY-like antiferromagnet Cs2CoCl4 using single-crystal neutron diffraction. In zero field interchain couplings cause…

Strongly Correlated Electrons · Physics 2009-11-07 M. Kenzelmann , R. Coldea , D. A. Tennant , D. Visser , M. Hofmann , P. Smeibidl , Z. Tylczynski

Our single-crystal polarized neutron scattering at 65 mK and powder unpolarized neutron diffraction at 0.5 K show no evidence for a long-range magnetic order and even detect no sign of diffuse magnetic neutron scattering in single-crystal…

Strongly Correlated Electrons · Physics 2016-03-17 Haifeng Li , Binyang Hou , Andrew Wildes , Anatoliy Senyshyn , Karin Schmalzl , Wolfgang Schmidt , Cong Zhang , Thomas Brueckel , Georg Roth

Neutron diffraction measurements on a single crystal of CeGe1.76 reveal a complex series of magnetic transitions at low temperature. At T_N = 7 K, there is a transition from a paramagnetic state at higher temperature to an incommensurate…

Strongly Correlated Electrons · Physics 2014-11-03 W. T. Jayasekara , W. Tian , H. Hodovanets , P. C. Canfield , S. L. Bud'ko , A. Kreyssig , A. I. Goldman

A magnetic Bragg reflection corresponding to the wave vector k13 = (2pi/a)[1/2,1/2,1/2] of the antiferro-quadrupolar ordering is found in CeB6 in zero magnetic field below the Neel temperature TN. Its intensity is two orders of magnitude…

Strongly Correlated Electrons · Physics 2009-11-10 V. P. Plakhty , L. P. Regnault , A. V. Goltsev , S. V. Gavrilov , F. Yakhou , J. Flouquet , C. Vettier , S. Kunii

The magnetic order of EuIr$_4$In$_2$Ge$_4$, which crystallizes in a Dresselhaus-type noncentrosymmetric tetragonal structure, was investigated using two complementary single-crystal neutron diffraction approaches. Time-of-flight…

Strongly Correlated Electrons · Physics 2026-04-14 Chihiro Tabata , Koji Kaneko , Akiko Nakao , Takashi Ohhara , Tatsuma D. Matsuda , Yoshichika Ōnuki

The interplay of magnetic correlations, crystal electric field interactions, and spin-orbit coupling in low-dimensional frustrated magnets fosters novel ground states with unusual excitations. Here, we report the magnetic properties and…

Materials Science · Physics 2024-09-02 S. Guchhait , A. Painganoor , S. S. Islam , J. Sichelschmidt , M. D. Le , N. B. Christensen , R. Nath

The transverse-field Ising model on the triangular lattice is expected to host an intermediate finite-temperature Kosterlitz-Thouless (KT) phase through a mapping of the spins on each triangular unit to a complex order parameter.…

Single crystals of the heavy-fermion compound YbAgGe have been studied by neutron scattering. The magnetic ordering occurring below T1=0.5 K is characterized by a commensurate propagation vector k=(1/3,0,1/3) and the moments in the basal…

Strongly Correlated Electrons · Physics 2015-06-24 B. Fak , D. F. McMorrow , P. G. Niklowitz , S. Raymond , E. Ressouche , J. Flouquet , P. C. Canfield , S. L. Bud'ko , Y. Janssen , M. J. Gutmann

Sr$_{3}$Cr$_{2}$O$_{8}$ consist of a lattice of spin-1/2 Cr$^{5+}$ ions, which form hexagonal bilayers and which are paired into dimers by the dominant antiferromagnetic intrabilayer coupling. The dimers are coupled three-dimensionally by…