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The kagome lattice is a fertile platform to explore topological excitations with both Fermi-Dirac and Bose-Einstein statistics. While relativistic Dirac Fermions and flat-bands have been discovered in the electronic structure of kagome…

The application of a magnetic field transverse to the easy axis, Ising direction in the quasi-two-dimensional Kagome staircase magnet, Co3V2O8, induces three quantum phase transitions at low temperatures, ultimately producing a novel high…

Strongly Correlated Electrons · Physics 2015-11-10 K. Fritsch , G. Ehlers , K. C. Rule , K. Habicht , M. Ramazanoglu , H. A. Dabkowska , B. D. Gaulin

Magnetic, thermodynamic, neutron diffraction and inelastic neutron scattering are used to study spin correlations in the easy-axis XXZ triangular lattice magnet K2Co(SeO3)2. Despite the presence of quasi-2D "supersolid" magnetic order, the…

Strongly Correlated Electrons · Physics 2024-11-04 M. Zhu , V. Romerio , N. Steiger , S. D. Nabi , N. Murai , S. Ohira-Kawamura , K. Yu. Povarov , Y. Skourski , R. Sibille , L. Keller , Z. Yan , S. Gvasaliya , A. Zheludev

Using neutrons and x-rays we show the topological kagome antiferromagnet Mn$_3$Sn for $T<285$~K forms a homogeneous spin and charge ordered state comprising a longitudinally polarized spin density wave (SDW) with wavevector…

Strongly Correlated Electrons · Physics 2024-07-23 Y. Chen , J. Gaudet , G. G. Marcus , T. Nomoto , T. Chen , T. Tomita , M. Ikhlas , H. S. Suzuki , Y. Zhao , W. C. Chen , J. Strempfer , R. Arita , S. Nakatsuji , C. Broholm

Inelastic neutron scattering experiments were performed on single crystals of the heavy-fermion compound CeIn$_{3}$ for temperatures below and above the N\'eel temperature, $T_N$. In the antiferromagnetically ordered phase, well-defined…

Strongly Correlated Electrons · Physics 2009-11-10 W. Knafo , S. Raymond , B. Fak , G. Lapertot , P. C. Canfield , J. Flouquet

YBaCo4O7 belongs to a new class of geometrically frustrated magnets like the pyrochlores, in which Co-spins occupy corners of tetrahedra. The structure can be viewed as an alternating stacking of Kagome and triangular layers. Exactly half…

Materials Science · Physics 2009-11-11 L. C. Chapon , P. G. Radaelli , H. Zheng , J. F. Mitchell

The coupled spin tube system, which is equivalent to a stacked Kagome-triangular spin system, exhibits the cuboc order -- a non-coplanar spin order with a twelve-sublattice structure accompanying spontaneous breaking of the translational…

Strongly Correlated Electrons · Physics 2017-10-05 Masahiro Ochiai , Kouichi Seki , Kouichi Okunishi

Magnetic properties of the spin-1/2 kagome-like compound volborthite are studied using a high-quality polycrystalline sample. It is evidenced from magnetization and specific heat measurements that the spins on the kagome lattice still…

We determined the spin exchanges between the Cu2+ ions in the kagome layers of volborthite, Cu3V2O7(OH)2x2H2O, by performing the energy-mapping analysis based on DFT+U calculations, to find that the kagom\'e layers of Cu2+ ions are hardly…

Strongly Correlated Electrons · Physics 2022-03-02 Myung-Hwan Whangboa , Hyun-Joo Koo , Eva Brücher , Pascal Puphal , Reinhard K. Kremer

Magnetic topological phases of quantum matter are an emerging frontier in physics and material science. Along these lines, several kagome magnets have appeared as the most promising platforms. Here, we explore magnetic correlations in the…

Layered rare-earth delafossites $ARX_2$ with $R$ = Yb(III) or Ce(III) have received a lot of interest as potential hosts for a quantum spin-liquid ground state. Some systems of this family that show no long-range order down to the lowest…

Strongly Correlated Electrons · Physics 2022-12-26 S. M. Avdoshenko , A. A. Kulbakov , E. Häußler , P. Schlender , Th. Doert , J. Ollivier , D. S. Inosov

Unveiling the interplay between spin density wave (SDW) and charge density wave (CDW) orders in correlated electron materials is important to obtain a comprehensive understanding of their electronic, structural, and magnetic properties.…

Strongly Correlated Electrons · Physics 2025-12-04 Mason L. Klemm , Tingjun Zhang , Barry L. Winn , Fankang Li , Feng Ye , Sijie Xu , Xiaokun Teng , Bin Gao , Ming Yi , Pengcheng Dai

We present the magnetic orders and excitations of the distorted kagome intermetallic magnet TmAgGe. Using neutron single crystal diffraction we identify the propagation vectors $\bf{k}$ = (1/2 0 0) and $\bf{k}$ = (0 0 0) and determine the…

We report on a 59Co NMR investigation of the trigonal cobaltate Ca3Co2O6 carried out on a single crystal, providing precise determinations of the electric field gradient and chemical shift tensors, and of the internal magnetic fields at the…

Strongly Correlated Electrons · Physics 2015-05-20 G. Allodi , R. De Renzi , S. Agrestini , C. Mazzoli , M. R. Lees

Mn3V2O8 is a magnetic system in which S = 5/2 Mn2+ is found in the kagome staircase lattice. Here we report the magnetic phase diagram for temperatures above 2 K and applied magnetic fields below 9 T, characterized by measurements of the…

Strongly Correlated Electrons · Physics 2007-05-23 E. Morosan , J. Fleitman , T. Klimczuk , R. J. Cava

We present polarised-neutron diffraction measurements of the Ising-like spin-chain compound Ca3Co2O6 above and below the magnetic ordering temperature TN. Below TN, a clear evolution from a single-phase spin-density wave (SDW) structure to…

We report the study of high quality samples of the frustrated S = 1/2 kagome antiferromagnet vesignieite, Cu3Ba(VO5H)2. Neutron powder diffraction measurements evidence the high quality of the kagome lattice and show no sign of a transition…

We report neutron diffraction measurements of Ca$_{0.6}$Sr$_{0.4}$MnSb$_2$, a low-carrier-density Dirac semimetal in which the antiferromagnetic Mn layers are interleaved with Sb layers that host Dirac fermions. We have discovered that we…

Strongly Correlated Electrons · Physics 2025-03-26 Xiao Hu , Yan Wu , Matthias D. Frontzek , Zhixiang Hu , Cedomir Petrovic , John M. Tranquada , Igor A. Zaliznyak

By performing time-of-flight neutron scattering measurements on a large amount of single crystals of Sr$_2$RuO$_4$, we studied detailed structure of the imaginary part of the dynamic spin susceptibility over a wide range of phase space. In…

Strongly Correlated Electrons · Physics 2015-05-28 K. Iida , M. Kofu , N. Katayama , J. Lee , R. Kajimoto , Y. Inamura , M. Nakamura , M. Arai , Y. Yoshida , M. Fujita , K. Yamada , S. -H. Lee

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