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Based on density functional theory band structure calculations, quantum Monte-Carlo simulations, and high-field magnetization measurements, we address the microscopic magnetic model of BaAg2Cu[VO4]2 that was recently proposed as a spin-1/2…

Materials Science · Physics 2012-06-19 Alexander A. Tsirlin , Angela Moeller , B. Lorenz , Yu. Skourski , H. Rosner

We report proximate quantum spin liquid behavior in K$_2$Co$_2$(SO$_4$)$_3$ with the magnetic Co$^{2+}$ ions embedded on a highly frustrated three-dimensional double trillium lattice. Single-crystal and high-resolution synchrotron powder…

NaPrTe2, NaNdTe2, and NaTbTe2 are found to be triangular lattice magnets with the alpha-NaFeO2 structure, where lanthanoid atoms with 4f electrons form a triangular lattice, based on the structural analysis and physical property…

Materials Science · Physics 2023-08-31 Koki Eto , Yoshihiko Okamoto , Naoyuki Katayama , Hajime Ishikawa , Koichi Kindo , Koshi Takenaka

Molecular magnets based on [Mo$_3$]$^{11+}$ units with one unpaired electron per trimer have attracted recent interest due to the identification of quantum spin liquid candidacy in some family members. Here, we present comprehensive…

The magnetic properties of a novel cobalt-based hydrogen vanadate, Co13.5(OH)6(H0.5VO3.5)2(VO4)6, are reported. This new magnetic material was synthesized in single-crystal form using a conventional hydrothermal method. Its crystal…

A new type of magnetically frustrated lattice is found in the layered fluoride NaBa2Mn3F11. A kagome-type array of regular triangles composed of Mn2+ ions (spin 5/2) deforms so as to generate the next-nearest-neighbor interaction J2 between…

Materials Science · Physics 2014-03-11 Hajime Ishikawa , Tsuyoshi Okubo , Yoshihiko Okamoto , Zenji Hiroi

The ferrimagnetic spinel $\mathrm{CoV_2O_4}$ has been a topic of intense recent interest, both as a frustrated insulator with unquenched orbital degeneracy and as a near-itinerant magnet which can be driven metallic with moderate applied…

Strongly Correlated Electrons · Physics 2016-02-03 D. Reig-i-Plessis , D. Casavant , V. O. Garlea , A. A. Aczel , M. Feygenson , J. Neuefeind , H. D. Zhou , S. E. Nagler , G. J. MacDougall

Cd2Os2O7 shows a peculiar metal-insulator transition at 227 K with magnetic ordering in a frustrated pyrochlore lattice, but its magnetic structure in the ordered state and the transition origin are yet uncovered. We observed a commensurate…

Strongly Correlated Electrons · Physics 2012-06-20 J. Yamaura , K. Ohgushi , H. Ohsumi , T. Hasegawa , I. Yamauchi , K. Sugimoto , S. Takeshita , A. Tokuda , M. Takata , M. Udagawa , M. Takigawa , H. Harima , T. Arima , Z. Hiroi

CuLa$_2$Ge$_2$O$_8$ forms a distorted triangular lattice of quantum spin-1/2 Cu$^{2+}$ ions. A crystal growth method was developed using the traveling-solvent floating zone technique resulting in the synthesis of a large single crystal (4…

Strongly Correlated Electrons · Physics 2026-04-17 S. Thamban , C. Aguilar-Maldonado , S. Chillal , R. Feyerherm , K. Prokeš , A. J. Studer , D. Abou-Ras , K. Karmakar , A. T. M. N. Islam , B. Lake

We report high resolution neutron scattering measurements on the triangular lattice Mott insulator Na$_x$CrO$_2$ ($x$=1) which has recently been shown to exhibit an unusually broad fluctuating crossover regime extending far below the onset…

Strongly Correlated Electrons · Physics 2014-05-26 D. Hsieh , D. Qian , R. F. Berger , C. Liu , B. Ueland , P. Schiffer , Q. Huang , R. J. Cava , J. W. Lynn , M. Z. Hasan

This study examines the lanthanide calcium oxyborates Ca$_4$LnO(BO$_3$)$_3$ (Ln = La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Y, Er, Yb). The reported monoclinic structure (space group $Cm$) was confirmed using powder X-ray diffraction. The…

Strongly Correlated Electrons · Physics 2020-07-09 Nicola D. Kelly , Siân E. Dutton

The crystal growth, structure, and basic magnetic properties of TmMgGaO4 are reported. The Tm ions are located in a planar triangular lattice consisting of distorted TmO6 octahedra, while the Mg and Ga atoms randomly occupy intermediary…

Materials Science · Physics 2018-10-16 F. Alex Cevallos , Karoline Stolze , Tai Kong , Robert J. Cava

Strain, magnetization, and unpolarized and polarized neutron diffraction measurements were performed to study the magnetic and structural properties of spinel CoV$_{2}$O$_{4}$. Magnetostriction measurements indicate that a subtle distortion…

Strongly Correlated Electrons · Physics 2016-01-29 R. Koborinai , S. E. Dissanayake , M. Reehuis , M. Matsuda , S. -H. Lee , T. Katsufuji

We report magnetic properties of a 3d$^9$ (Cu$^{2+}$) magnetic insulator Cu2OSO4 measured on both powder and single crystal. The magnetic atoms of this compound form layers, whose geometry can be described either as a system of chains…

A positive muon spin rotation and relaxation ($\mu^+$SR) experiment on [Ca$_2$CoO$_3$]$_{0.62}$[CoO$_2$], ({\sl i.e.}, Ca$_3$Co$_4$O$_9$, a layered thermoelectric cobaltite) indicates the existence of two magnetic transitions at $\sim$ 100…

Strongly Correlated Electrons · Physics 2009-11-10 J. Sugiyama , J. H. Brewer , E. J. Ansaldo , H. Itahara , K. Dohmae , Y. Seno , C. Xia , T. Tani

We report on the magnetic properties of geometrically frustrated K3CrO4, in which Cr5+ cations are arranged on a distorted pyrochlore lattice. The crystal structure, static and dynamic magnetic properties of the compound are investigated in…

Strongly Correlated Electrons · Physics 2021-07-08 Liliia D. Kulish , Graeme R. Blake

FeVO$_4$ has been studied by heat capacity, magnetic susceptibility, electric polarization and single crystal neutron diffraction experiments. The triclinic crystal structure is made of \emph{S}-shaped clusters of six Fe$^{3+}$ ions, linked…

Superconductivity · Physics 2015-05-13 A. Daoud-Aladine , B. Kundys , C. Martin , P. G. Radaelli , P. J. Brown , C. Simon , L. C. Chapon

In this paper we have studied, by means of high-resolution neutron powder diffraction and magnetic susceptibility, the structural and magnetic features of selected samples of the HoBaCo2O5+delta layered cobaltite in the low oxygen content…

Materials Science · Physics 2009-11-13 Lorenzo Malavasi , Yuri Diaz-Fernandez , M. Cristina Mozzati , Clemens Ritter

We report a neutron powder diffraction study of $R$Mn$_7$O$_{12}$ quadruple perovskite manganites with $R$ = La, Ce, Nd, Sm, and Eu. We show that in all measured compounds concomitant magnetic ordering of the $A$ and $B$ manganese…

Strongly Correlated Electrons · Physics 2018-08-29 R. D. Johnson , D. D. Khalyavin , P. Manuel , L. Zhang , K. Yamaura , A. A. Belik

Yb- and Ce-based delafossites were recently identified as effective spin-1/2 antiferromagnets on the triangular lattice. Several Yb-based systems, such as NaYbO2, NaYbS2, and NaYbSe2, exhibit no long-range order down to the lowest measured…