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As a hallmark of electronic correlation, spin-charge interplay underlies many emergent phenomena in doped Mott insulators, such as high-temperature superconductivity, whereas the half-filled parent state is usually electronically frozen…

The layered 5d transition metal oxides like Sr2IrO4 have attracted significant interest recently due to a number of exotic and new phenomena induced by the interplay between the spin-orbit coupling, bandwidth W and on-site Coulomb…

We report the observation of magnetic superstructure in a magnetization plateau state of SrCu2(BO3)2, a frustrated quasi-two-dimensional quantum spin system. The Cu and B nuclear magnetic resonance (NMR) spectra at 35 mllikelvin indicate an…

Strongly Correlated Electrons · Physics 2009-11-07 K. Kodama , M. Takigawa , M. Horvatic , C. Berthier , H. Kageyama , Y. Ueda , S. Miyahara , F. Becca , F. Mila

We present muon spin rotation ($\mu$SR) measurements on the noncentrosymmetric superconductor PbTaSe$_2$. From measurements in an applied transverse field between $H_{c1}$ and $H_{c2}$, we extract the superfluid density as a function of…

Superconductivity · Physics 2017-06-14 M. N. Wilson , A. M. Hallas , Y. Cai , S. Guo , Z. Gong , R. Sankar , F. C. Chou , Y. J. Uemura , G. M. Luke

The macroscopic magnetizations of a RuSr2(Eu0.7Ce0.3)2Cu2O10+d sample were investigated. A ferromagnet-like transition occurs around T_M in the low-field magnetization. Highly nonlinear M(H), non-Curie-Weiss susceptibility, and slow…

Superconductivity · Physics 2009-11-07 Y. Y. Xue , B. Lorenz , D. H. Cao , C. W. Chu

We used resonant inelastic x-ray scattering to reveal the nature of magnetic interactions in Sr2IrO4, a 5d transition-metal oxide with a spin-orbit entangled ground state and Jeff=1/2 magnetic momemts, referred to as 'isospins'. The magnon…

Ruthenium-based perovskite systems are attractive because their Structural, electronic and magnetic properties can be systematically engineered. SrRuO$_3$/SrTiO$_3$ superlattice, with its period consisting of one unit cell each, is very…

Strongly Correlated Electrons · Physics 2012-10-15 Mingqiang Gu , Qiyun Xie , Xuan Shen , Rubin Xie , Jianli Wang , Gang Tang , Di Wu , G. P. Zhang , X. S. Wu

CuMoO4 is a triclinic quantum magnet based on S = 1/2 moments at the Cu2+ site. It has recently attracted interest due to the remarkable changes in its chromic and volumetric properties at high temperatures, and in its magnetic properties…

Strongly Correlated Electrons · Physics 2015-05-28 S. Haravifard , K. Fritsch , T. Asano , J. P. Clancy , Z. Yamani , G. Ehlers , T. Nishimura , Y. Inagaki , T. Kawae , I. Swainson , B. D. Gaulin

Magnetization plateaux, visible as anomalies in magnetic susceptibility at low temperatures, are one of the hallmarks of frustrated magnetism. An extremely robust half-magnetization plateau is observed in the spinel oxides CdCr2O4 and…

Strongly Correlated Electrons · Physics 2007-06-06 Nic Shannon , Hiroaki Ueda , Yukitoshi Motome , Karlo Penc , Hiroyuki Shiba , Hidenori Takagi

The vortex lattice structures of Sr$_2$RuO$_4$ for the odd parity representations of the superconducting state are examined for the magnetic field along the crystallographic directions. Particular emphasis is placed upon the two dimensional…

Superconductivity · Physics 2009-10-31 D. F. Agterberg

We report thermodynamic, neutron diffraction, and inelastic neutron scattering measurements on Cs$_2$RuO$_4$, a member of the celebrated family of frustrated magnets Cs$_2$MX$_4$ (M = Cu, Co, X = Br, Cl). Unlike the previously studied…

Strongly Correlated Electrons · Physics 2025-10-22 S. D. Nabi , M. Zhu , K. Yu. Povarov , D. G. Mazzone , J. Lass , Y. Wu , Z. Yan , S. Gvasaliya , A. Zheludev

The Dirac semimetal PdTe${}_2$ becomes superconducting at a temperature $T_{c}=1.6$~K. Thermodynamic and muon spin rotation experiments support type-I superconductivity, which is unusual for a binary compound. A key property of a type-I…

Superconductivity · Physics 2021-03-24 P. Garcia-Campos , Y. K. Huang , A. de Visser , K. Hasselbach

The spins of the low-spin Ir4+ (S = 1/2, d5) ions at the octahedral sites of the oxides Sr3NiIrO6, Sr2IrO4 and Na2IrO3 exhibit preferred orientations with respect to their IrO6 octahedra. We evaluated the magnetic anisotropies of these S =…

Strongly Correlated Electrons · Physics 2016-04-20 Elijah E. Gordon , Hongjun Xiang , Jürgen Köhler , Myung-Hwan Whangbo

Magnetic systems are fertile ground for the emergence of exotic states when the magnetic interactions cannot be satisfied simultaneously due to the topology of the lattice - a situation known as geometrical frustration. Spinels, AB2O4, can…

Strongly Correlated Electrons · Physics 2015-05-13 M. Matsuda , H. Ueda , A. Kikkawa , Y. Tanaka , K. Katsumata , Y. Narumi , T. Inami , Y. Ueda , S. -H. Lee

The Cu spin magnetism in La2-x-yEuySrxCuO4 (x<=0.17; y<=0.2) has been studied by means of magnetization measurements up to 14 T. Our results clearly show that in the antiferromagnetic phase Dzyaloshinsky-Moriya (DM)superexchange causes Cu…

Strongly Correlated Electrons · Physics 2009-11-10 M. Huecker , V. Kataev , J. Pommer , U. Ammerahl , A. Revcolevschi , J. M. Tranquada , B. Buechner

We report DC magnetization, detailed systematic linear and nonlinear AC magnetic susceptibility and transport for a single phase RuSr2Eu1.4Ce0.6Cu2O10-{\delta} (EuRu-1222) magneto-superconductor. The studied sample is synthesized through…

Superconductivity · Physics 2015-05-28 Anuj Kumar , R. P. Tandon , V. P. S. Awana

We present a variational analysis for a half-quantum vortex (HQV) in the equal-spin-pairing superfluid state which, under suitable conditions, is believed to be realized in Sr2RuO4 and 3He-A. Our approach is based on a description of the…

Superconductivity · Physics 2015-05-13 Victor Vakaryuk , Anthony J. Leggett

We study spin switching effects in finite-size superconducting multivalve structures. We examine $\rm F_1F_2SF_3$ and $\rm F_1F_2SF_3F_4$ hybrids where a singlet superconductor ($\rm S$) layer is sandwiched among ferromagnet ($\rm F$)…

Superconductivity · Physics 2018-03-09 Mohammad Alidoust , Klaus Halterman

We present NMR data in the normal and superconducting states of CeCoIn$_5$ for fields close to $H_{\rm c2}(0)=11.8$ T in the $ab$ plane. Recent experiments identified a first-order transition from the normal to superconducting state for $H>…

Strongly Correlated Electrons · Physics 2013-05-29 B. -L. Young , R. R. Urbano , N. J. Curro , J. D. Thompson , J. L. Sarrao , A. B. Vorontsov , M. J. Graf

The superconducting state in the quasi-two-dimensional and strongly correlated Sr$_2$RuO$_4$ is uniquely held up as a solid state analog to superfluid $^3$He-$A$, with an odd-parity order parameter that also breaks time reversal symmetry,…