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The pressure-temperature phase diagram of an intermediate-valence compound YbPd was revealed via simultaneous ac-calorimetry and electrical resistivity measurements. Two successive structural phase transition temperatures, $T_1$ = 125 K and…

The antiferromagnetic structure of Yb$_{3}$Ga$_{5}$O$_{12}$ is identified by neutron diffraction experiments below the previously-known transition at $T_{\lambda}=54$ mK. The magnetic propagation vector is found to be ${\bf k}=(1/2, 1/2,…

Strongly Correlated Electrons · Physics 2024-12-06 S. Raymond , E. Lhotel , E. Riordan , E. Ressouche , K. Beauvois , C. Marin , M. E. Zhitomirsky

We performed high-resolution powder neutron diffraction experiments and discovered an elliptic helical incommensurate magnetic structure in the semiconducting rare-earth magnet YbCuS2, featuring effective spin-1/2 Yb$^{3+}$ ions that form a…

Strongly Correlated Electrons · Physics 2025-01-09 T. Onimaru , Y. Ohmagari , S. Mizutani , R. Yamamoto , H. Kaneshima , C. Moriyoshi , D. T. Adroja , D. Khyalyavin , P. Manuel , H. Saito , C. Hotta

Neutron diffraction measurements were carried out on single crystals and powders of Yb2Pt2Pb, where Yb moments form planes of orthogonal dimers in the frustrated Shastry-Sutherland Lattice (SSL). Yb2Pt2Pb orders antiferromagnetically at…

Neutron diffraction has been used to determine the magnetic structure of Na$_8$Cu$_5$O$_{10}$, a stoichiometric compound containing chains based on edge-sharing CuO$_4$ plaquettes. The chains are doped with 2/5 hole per Cu site and exhibit…

Strongly Correlated Electrons · Physics 2009-11-13 M. Raichle , M. Reehuis , G. André , L. Capogna , M. Sofin , M. Jansen , B. Keimer

We report extensive measurements on a new compound (Yb0.24Sn0.76)Ru that crystallizes in the cubic CsCl structure. Valence band photoemission and L3 x-ray absorption show no divalent component in the 4f configuration of Yb. Inelastic…

The pseudogap regime of high-temperature cuprates harbours diverse manifestations of electronic ordering whose exact nature and universality remain debated. Here, we show that the short-ranged charge order recently reported in the normal…

Superconductivity · Physics 2015-03-10 T. Wu , H. Mayaffre , S. Krämer , M. Horvatić , C. Berthier , W. N. Hardy , R. Liang , D. A. Bonn , M. -H. Julien

A diffraction experiment using a high energy x-ray was carried out on YbInCu4. Below the Yb valence transition temperature, the splitting of Bragg peaks was detected in higher-order reflections. No superlattice reflections accompanying the…

Strongly Correlated Electrons · Physics 2016-05-27 Satoshi Tsutsui , Kunihisa Sugimoto , Ryoma Tsunoda , Yusuke Hirose , Takeshi Mito , Rikio Settai , Masaichiro Mizumaki

Recent experiments show that charge-density-wave correlations are prevalent in underdoped cuprate superconductors. The correlations are short ranged at weak magnetic fields but their intensity and spatial extent increase rapidly at low…

Superconductivity · Physics 2016-01-20 Yosef Caplan , Gideon Wachtel , Dror Orgad

Motivated by the recent observations of incommensurate magnetic order and electric polarization in YBaCuFeO5 up to temperatures TN2 as high as 230K [1,2] we report here for the first time a model for the incommensurate magnetic structure of…

Magnetic ordering phenomena in CexPr1-xB6 solid solutions have been studied using both powder and single-crystal neutron diffraction. A variety of magnetic structures are observed depending on temperature and Ce concentration. Over a broad…

Strongly Correlated Electrons · Physics 2008-07-25 Jean-Michel Mignot , Gilles André , Julien Robert , Masafumi Sera , Fumitoshi Iga

Polarized and unpolarized neutron diffraction has been used to search for magnetic order in YBa$_2$Cu$_3$O$_{6+x}$ superconductors. Most of the measurements were made on a high quality crystal of YBa$_2$Cu$_3$O$_{6.6}$. It is shown that…

Superconductivity · Physics 2009-11-07 H. A. Mook , Pengcheng Dai , S. M. Hayden , A. Hiess , J. W. Lynn , S. -H. Lee , F. Dogan

Charge-ordered ground states permeate the phenomenology of 3d-based transition metal oxides, and more generally represent a distinctive hallmark of strongly-correlated states of matter. The recent discovery of charge order in various…

X-ray resonant scattering has been used to measure the magnetic order of the Dy ions below 40K in multiferroic DyMn$_{2}$O$_{5}$. The magnetic order has a complex behaviour. There are several different ordering wavevectors, both…

Strongly Correlated Electrons · Physics 2008-04-21 R. A. Ewings , A. T. Boothroyd , D. F. McMorrow , D. Mannix , H. C. Walker , B. M. R. Wanklyn

The magnetic ordering of the hexagonal multiferroic compound YbMnO$_3$ has been studied between 100 K and 1.5 K by combining neutron powder diffraction, $^{170}$Yb M\"ossbauer spectroscopy and magnetization measurements. The Yb moments of…

Strongly Correlated Electrons · Physics 2008-09-30 X. Fabrèges , I. Mirebeau , P. Bonville , S. Petit , G. Lebras-Jasmin , A. Forget , G. André , S. Pailhès

The intermediate valent systems TmSe and SmB6 have been investigated up to 16 and 18 GPa by ac microcalorimetry with a pressure (p) tuning realized in situ at low temperature. For TmSe, the transition from an antiferromagnetic insulator for…

Strongly Correlated Electrons · Physics 2009-11-11 J. Derr , G. Knebel , G. Lapertot , B. Salce , M-A. Measson , J. Flouquet

We investigated the magnetic structure of the heavy fermion compound CePt$_2$In$_7$ below $T_N~=5.34(2)$ K using magnetic resonant X-ray diffraction at ambient pressure. The magnetic order is characterized by a commensurate propagation…

Strongly Correlated Electrons · Physics 2017-08-16 Nicolas Gauthier , Didier Wermeille , Nicola Casati , Hironori Sakai , Ryan E. Baumbach , Eric D. Bauer , Jonathan S. White

Magnetic ordering in TbMnO3 was revisited by a neutron diffraction study. In addition to the previously reported A-type and G-type modulated structures with a propagation vector (0,q_Mn,0), we found C-type and F-type orderings of the Mn…

Strongly Correlated Electrons · Physics 2007-05-23 R. Kajimoto , H. Yoshizawa , H. Shintani , T. Kimura , Y. Tokura

Understanding high-temperature superconductivity requires a prior knowledge of the nature of the enigmatic pseudogap metallic state, out of which the superconducting state condenses. In addition to the electronic orders involving charge…

Superconductivity · Physics 2019-06-26 L. Mangin-Thro , Y. Sidis , A. Wildes , P. Bourges

Evidence is mounting that charge order competes with superconductivity in high Tc cuprates. Whether this has any relationship to the pairing mechanism is unknown since neither the universality of the competition nor its microscopic nature…

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