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The magnetic phase diagram of the quasi one-dimensional spinchain system CsNiF$_3$ below the N\'eel temperature is determined. For magnetic fields perpendicular to the spin chains incommensurate phases are predicted. From linear spin-wave…

Statistical Mechanics · Physics 2009-10-30 C. Pich , F. Schwabl

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

We report for the first time the magnetic structure of the high entropy oxide $(Mg_{0.2}Co_{0.2}Ni_{0.2}Cu_{0.2}Zn_{0.2})O$ using neutron powder diffraction. This material exhibits a sluggish magnetic transition but possesses a long-range…

Muon spin rotation technique is used to study magnetic ordering in ultra-pure samples of SrCu$_{1-x}$Ni$_x$O$_2$, an archetypical $S=1/2$ antiferromagnetic Heisenberg chain system with a small amount of $S=1$ defects. The ordered state in…

Strongly Correlated Electrons · Physics 2016-06-23 G. Simutis , M. Thede , R. Saint-Martin , A. Mohan , C. Baines , Z. Guguchia , R. Khasanov , C. Hess , A. Revcolevschi , B. Buchner , A. Zheludev

We report on NMR studies of the quasi--1D antiferromagnetic $S=1/2$ chain cuprate LiCuVO$_4$, focusing on the high--field spin--modulated phase observed recently in applied magnetic fields $H > H_{\rm c2}$ ($\mu_0H_{\rm c2} \approx 7.5$ T).…

Materials Science · Physics 2010-02-12 N. Buttgen , W. Kraetschmer , L. E. Svistov , L. A. Prozorova , A. Prokofiev

Ti substituting Ru in Sr$_2$RuO$_4$ in small concentrations induces incommensurate spin density wave order with a wave vector $\boldsymbol{Q} \simeq (2 \pi /3, 2 \pi /3)$ corresponding to the nesting vector of two out of three Fermi surface…

Strongly Correlated Electrons · Physics 2021-06-02 Bastian Zinkl , Manfred Sigrist

We argue for a recently observed puzzling multiferroic behavior in s=1/2 1D chain cuprate LiCu2O2 with edge-shared arrangement of CuO4 plaquettes and incommensurate spiral spin ordering can be consistently explained if one takes into…

Strongly Correlated Electrons · Physics 2009-11-13 A. S. Moskvin , Yu. D. Panov , S. -L. Drechsler

We report a comprehensive experimental and theoretical study of the quasi-one-dimensional quantum magnet CuNCN. Based on magnetization measurements above room temperature as well as muon spin rotation and electron spin resonance…

The spin-density wave (SDW) and charge-density wave (CDW) order in superconducting La1.45Nd0.4Sr0.15CuO4 were studied under an applied magnetic field using neutron and X-ray diffraction techniques. In zero field, incommensurate (IC) SDW…

Spin density waves, based on modulated local moments, are usually associated with metallic materials, but have recently been reported in insulators which display coupled magnetic and structural order parameters. We discuss one such example,…

Materials Science · Physics 2020-07-30 N. Giles-Donovan , N. Qureshi , R. D. Johnson , L. Y. Zhang , S. -W. Cheong , S. Cochran , C. Stock

The relationships among charge order, spin fluctuations, and superconductivity in underdoped cuprates remain controversial. We use neutron scattering techniques to study these phenomena in La$_{1.93}$Sr$_{0.07}$CuO$_4$, a superconductor…

Superconductivity · Physics 2015-11-25 H. Jacobsen , I. A. Zaliznyak , A. T. Savici , B. L. Winn , S. Chang , M. Huecker , G. D. Gu , J. M. Tranquada

The phase diagram of the quasi-one-dimensional magnet NaCuMoO$_4$(OH) is established through single-crystal NMR and heat-capacity measurements. The $^{23}$Na and $^1$H NMR experiments indicate a spiral and a collinear spin-density-wave…

Strongly Correlated Electrons · Physics 2017-11-27 Kazuhiro Nawa , Makoto Yoshida , Masashi Takigawa , Yoshihiko Okamoto , Zenji Hiroi

Previously we have presented evidence for stripe order of holes and spins in La(1.6-x)Nd(0.4)Sr(x)CuO(4) with x=0.12. Here we show, via neutron diffraction measurements of magnetic scattering, that similar order occurs in crystals with…

Condensed Matter · Physics 2009-10-28 J. M. Tranquada , J. D. Axe , N. Ichikawa , A. R. Moodenbaugh , Y. Nakamura , S. Uchida

The role of various magnetic inter-chain couplings has been investigated recently by numerical methods in doped frustrated quantum spin chains. A non-magnetic dopant introduced in a gapped spin chain releases a free spin-1/2 soliton. The…

Strongly Correlated Electrons · Physics 2009-11-10 Nicolas Laflorencie , Didier Poilblanc

Magnetic properties of a quasi one-dimensional magnet CuV_2O_6 have been studied by means of susceptibility measurement, NMR and powder neutron diffraction. Cu^{2+} spins (S=1/2) order antiferromagnetically below 22.6 K, and the saturation…

Strongly Correlated Electrons · Physics 2009-10-31 Jun Kikuchi , Kazuhiro Ishiguchi , Kiyoichiro Motoya , Masayuki Itoh , Kazunori Inari , Naotoshi Eguchi , Jun Akimitsu

We observe quasi-static incommensurate magnetic peaks in neutron scattering experiments on layered cobalt oxides La2-xSrxCoO4 with high Co oxidation states that have been reported to be paramagnetic. This enables us to measure the magnetic…

Strongly Correlated Electrons · Physics 2016-04-29 Z. W. Li , Y. Drees , C. Y. Kuo , H. Guo , A. Ricci , D. Lamago , O. Sobolev , U. Rütt , O. Gutowski , T. W. Pi , A. Piovano , W. Schmidt , K. Mogare , Z. Hu , L. H. Tjeng , A. C. Komarek

Trilayer nickelates, which exhibit a high degree of orbital polarization combined with an electron count (d8.67) corresponding to overdoped cuprates, have been identified as a promising candidate platform for achieving high-Tc…

Motivated by growing indications for a distinct form of nematic correlations in the extremely hole doped iron pnictide compounds $A$Fe$_2$As$_2$ ($A$=K,Rb,Cs), we consider spin-driven nematic order in the general case of incommensurate…

Superconductivity · Physics 2019-09-30 Yiming Wang , Wenjun Hu , Rong Yu , Qimiao Si

Incommensurately modulated twin structure of nyerereite Na1.64K0.36Ca(CO3)2 has been first determined in the (3+1)D symmetry group Cmcm({\alpha}00)00s with modulation vector q = 0.383a*. Unit-cell values are a = 5.062(1), b = 8.790(1), c =…

The crystal structure of the double tungstate NaFe(WO$_4$)$_2$ arises from that of the spin-driven multiferroic MnWO$_4$ by inserting non-magnetic Na layers. NaFe(WO$_4$)$_2$ exhibits a three-dimensional incommensurate spin-spiral structure…

Strongly Correlated Electrons · Physics 2022-05-17 S. Holbein , M. Ackermann , L. Chapon , P. Steffens , A. Gukasov , A. Sazonov , O. Breunig , Y. Sanders , P. Becker , L. Bohaty , T. Lorenz , M. Braden