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Electron-doped Eu(Fe$_{0.93}$Rh$_{0.07}$)$_2$As$_2$ has been systematically studied by high pressure investigations of the magnetic and electrical transport properties, in order to unravel the complex interplay of superconductivity and…

Superconductivity · Physics 2017-05-31 A. Löhle , A. Baumgartner , S. Zapf , W. H. Jiao , G. H. Cao , M. Dressel

By performing high-pressure single-crystal neutron diffraction measurements, the evolution of structure and magnetic ordering in EuFe2As2 under hydrostatic pressure were investigated. Both the tetragonal-toorthorhombic structural transition…

Superconductivity · Physics 2019-07-24 W. T. Jin , Y. Xiao , S. Nandi , S. Price , Y. Su , K. Schmalzl , W. Schmidt , T. Chatterji , A. Thamizhavel , Th. Brueckel

The magnetic phase diagram of EuFe$_{2}$(As$_{1-x}$P$_{x}$)$_{2}$ was investigated by means of magnetization and muon-spin rotation studies as a function of chemical (isovalent substitution of As by P) and hydrostatic pressure. The magnetic…

The antiferromagnet and semimetal EuCd$_2$As$_2$ has recently attracted a lot of attention due to a wealth of topological phases arising from the interplay of topology and magnetism. In particular, the presence of a single pair of Weyl…

We report on the magnetic properties of Eu$_{2}$Ir$_{2}$O$_{7}$ upon the application of hydrostatic pressure $P$ by means of macroscopic and local-probe techniques. In contrast to previously reported resistivity measurements, our dc…

Strongly Correlated Electrons · Physics 2016-04-15 G. Prando , R. Dally , W. Schottenhamel , Z. Guguchia , S. -H. Baek , R. Aeschlimann , A. U. B. Wolter , S. D. Wilson , B. Büchner , M. J. Graf

The interplay between superconductivity and Eu$ ^{2+}$ magnetic moments in EuFe$_2$(As$_{1-x}$P$_x$)$_2$ is studied by electrical resistivity measurements under hydrostatic pressure on $x=0.13$ and $x=0.18$ single crystals. We can map…

Strongly Correlated Electrons · Physics 2013-02-15 Y. Tokiwa , S. -H. Hübner , O. Beck , H. S. Jeevan , P. Gegenwart

Hydrostatic pressure effects on the temperature- and magnetic field dependencies of the in-plane and out-of-plane magnetization of the bi-layered perovskite Sr3Ru2O7 have been studied by SQUID magnetometer measurements under a hydrostatic…

Materials Science · Physics 2009-11-10 Yuri V. Sushko , Bruno DeHarak , Gang Cao , G. Shaw , D. K. Powell , J. W. Brill

The magnetic ground state of the Eu$^{2+}$ moments in a series of Eu(Fe$_{1-x}$Co$_{x}$)$_{2}$As$_{2}$ single crystals grown from the Sn flux has been investigated in detail by neutron diffraction measurements. Combined with the results…

We have systematically measured resistivity, susceptibility and specific heat under different magnetic fields (H) in Eu$_{1-x}$La$_x$Fe$_2$As$_2$ single crystals. It is found that a metamagnetic transition from A-type antiferromagnetism to…

Superconductivity · Physics 2015-05-13 T. Wu , G. Wu , H. Chen , Y. L. Xie , R. H. Liu , X. F. Wang , X. H. Chen

We report a detailed experimental and theoretical study on the effect of hydrostatic pressure on the structural and magnetic aspects of the layered honeycomb antiferromagent $\alpha$-RuCl$_{3}$. Magnetic susceptibility measurements…

The magnetic structure of superconducting Eu(Fe0.82Co0.18)2As2 is unambiguously determined by single-crystal neutron diffraction. A long-range ferromagnetic order of the Eu2+ moments along the c-direction is revealed below the magnetic…

Superconductivity · Physics 2014-05-06 W. T. Jin , S. Nandi , Y. Xiao , Y. Su , O. Zaharko , Z. Guguchia , Z. Bukowski , S. Price , W. H. Jiao , G. H. Cao , Th. Brueckel

We present the results of electrical resistivity, ac specific heat, magnetic susceptibility, X-ray absorption spectroscopy (XAS) and X-ray magnetic circular dichroism (XMCD) of the ternary iron arsenide EuFe2As2 single crystal under…

Using complementary polarized and unpolarized single-crystal neutron diffraction, we have investigated the temperature-dependent magnetic structures of Eu$_{0.5}$Ca$_{0.5}$Fe$_{2}$As$_{2}$. Upon 50 \% dilution of the Eu sites with isovalent…

Strongly Correlated Electrons · Physics 2019-04-11 W. T. Jin , M. Meven , A. P. Sazonov , S. Demirdis , Y. Su , Y. Xiao , Z. Bukowski , S. Nandi , Th. Brückel

A thorough study of EuZn$_2$P$_2$ single crystals, which were grown from Sn flux, was performed using both bulk (heat capacity, ac susceptibility, dc magnetization, electrical resistivitivity, magnetoresistance) and microscopic (M\"ossbauer…

Among iron 122 pnictide superconductors, the EuFe$_2$As$_2$ series draws particular interest because, in addition to superconductivity or the long-range spin-density-wave order in the Fe subsystem, the localized Eu$^{2+}$ magnetic moments…

Superconductivity · Physics 2011-03-15 Sina Zapf , Dan Wu , Lapo Bogani , Hirale S. Jeevan , Philipp Gegenwart , Martin Dressel

The magnetic order of the localized Eu$^{2+}$ spins in optimally-doped Eu(Fe$_{1-x}$Ir$_{x}$)$_{2}$As$_{2}$ ($\mathit{x}$ = 0.12) with superconducting transition temperature $\mathit{T_{SC}}$ = 22 K was investigated by single-crystal…

Superconductivity · Physics 2015-02-20 W. T. Jin , Wei Li , Y. Su , S. Nandi , Y. Xiao , W. H. Jiao , M. Meven , A. P. Sazonov , E. Feng , Yan Chen , C. S. Ting , G. H. Cao , Th. Brückel

We report the measurements of resistivity and magnetization under magnetic fields parallel and perpendicular to the basal plane, respectively, on a cobalt-doped Eu(Fe$_{0.89}$Co$_{0.11}$)$_{2}$As$_{2}$ single crystal. We observed a…

Superconductivity · Physics 2009-11-25 Shuai Jiang , Hui Xing , Guofang Xuan , Zhi Ren , Cao Wang , Zhu-an Xu , Guanghan Cao

We investigate the effect of hydrostatic pressure on temperature dependence of magnetization and also the influence of magnetic field on linear thermal expansion in polycrystalline Pr0.6Sr0.4MnO3, which is ferromagnetic at room temperature…

Materials Science · Physics 2018-08-15 Amit Chanda , R. Mahendiran

Using polarized neutron diffraction and x-ray resonant magnetic scattering (XRMS) techniques, multiple phase transitions were revealed in an underdoped, non-superconducting Eu(Fe$_{1-x}$Ir$_{x}$)$_{2}$As$_{2}$ ($\mathit{x}$ = 0.06) single…

Strongly Correlated Electrons · Physics 2016-08-06 W. T. Jin , Y. Xiao , Y. Su , S. Nandi , W. H. Jiao , G. Nisbet , S. Demirdis , G. H. Cao , Th. Brückel

High-pressure electrical resistivity measurements up to 3.0GPa have been performed on EuFe2As2 single crystals with residual resistivity ratios RRR=7 and 15. At ambient pressure, a magnetic / structural transition related to FeAs-layers is…

Superconductivity · Physics 2015-05-19 N. Kurita , M. Kimata , K. Kodama , A. Harada , M. Tomita , H. S. Suzuki , T. Matsumoto , K. Murata , S. Uji , T. Terashima
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