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The magnetic order in CaK(Fe[1-x]Ni[x])4As4 (1144) single crystals (x = 0.051 and 0.033) has been studied by neutron diffraction. We observe magnetic Bragg peaks associated to the same propagation vectors as found for the collinear stripe…

We report low-temperature $^{115}$In nuclear magnetic resonance (NMR) study of the prototypical heavy-fermion compound CeIrIn$_5$ in high magnetic fields applied close to the crystallographic $c$ axis. For this orientation, a field-induced…

Strongly Correlated Electrons · Physics 2026-04-30 Y. Tokunaga , M. -T. Suzuki , S. Krämer , H. Sakai , S. Kambe , H. Harima , D. Aoki , M. Horvatić , I. Sheikin

We present nuclear magnetic resonance (NMR), neutron diffraction, magnetization, and transport measurements on a single crystal and powder of CeVGe$_3$. This material exhibits heavy fermion behavior at low temperature, accompanied by…

Strongly Correlated Electrons · Physics 2024-04-29 C. Chaffey , H. C. Wu , Hanshang Jin , P. Sherpa , Peter Klavins , M. Avdeev , S. Aji , R. Shimodate , K. Nawa , T. J. Sato , V. Taufour , N. J. Curro

The optical conductivity of the heavy fermions UPd2Al3 and UPt3 has been measured in the frequency range from 10 GHz to 1.2 THz (0.04 meV to 5 meV) at temperatures 1 K < T < 300 K. In both compounds a well pronounced pseudogap of less than…

Strongly Correlated Electrons · Physics 2009-11-07 M. Dressel , N. Kasper , K. Petukhov , B. Gorshunov , G. Gruner , M. Huth , H. Adrian

We report the magnetic changes from canted antiferromagnetic to ferromagnetic orderings in anti-115-type MnPt$_{5-x}$Pd$_x$P ($x$ = 1, 2, 2.5, 3, 4, and 5) and the discovery of a new rare-earth-free ferromagnet, MnPd$_5$P by both…

Recent thermal conductivity measurements in the heavy-fermion compound CeIrIn_5 indicate that its superconducting order parameter is very different from CeCoIn_5. Here we show that these experiments are consistent with chiral d-wave…

Superconductivity · Physics 2007-12-20 Kazumi Maki , Aditya Raghavan , Stephan Haas

We present results of magnetic neutron diffraction experiments on the co-doped super-oxygenated La(2-x)Sr(x)CuO(4+y) (LSCO+O) system with x=0.09. The spin-density wave has been studied and we find long-range incommensurate antiferromagnetic…

We present the results of the specific heat and AC magnetic susceptibility measurements of $CeIr_{1-x}Rh_xIn_5$ for x from 0 to 0.5. As x is increased from 0 both quantities reflect the competition between two effects. The first is a…

Strongly Correlated Electrons · Physics 2009-11-07 A. Bianchi , R. Movshovich , M. Jaime , J. D. Thompson , P. G. Pagliuso , J. L. Sarrao

We report high magnetic field linear magnetostriction experiments on CeCoIn$_5$ single crystals. Two features are remarkable: (i) a sharp discontinuity in all the crystallographic axes associated with the upper superconducting critical…

Strongly Correlated Electrons · Physics 2015-06-25 V. F. Correa , T. P. Murphy , C. Martin , K. M. Purcell , E. C. Palm , G. M. Schmiedeshoff , J. C. Cooley , S. W. Tozer

We report a detailed study of the magnetic properties of CeCo$_{0.85}$Fe$_{0.15}$Si under high magnetic fields (up to 16 Tesla) measuring different physical properties such as specific heat, magnetization, electrical resistivity, thermal…

Strongly Correlated Electrons · Physics 2016-08-03 V. F. Correa , D. Betancourth , J. G. Sereni , N. Caroca-Canales , C. Geibel

The recent discovery of superconductivity in the iron-based layered pnictides with T_c ranging between 26 and 56K generated enormous interest in the physics of these materials. Here, we review some of the peculiarities of the…

Superconductivity · Physics 2014-05-20 Ilya Eremin , Johannes Knolle , Rafael M. Fernandes , Jörg Schmalian , Andrey V. Chubukov

Our experimental (neutron diffraction, M\"ossbauer spectroscopy, magnetic susceptibility, specific heat) and numerical studies on the evolution of short- and long-range magnetic order in $\gamma_{\rm II}$-Li\(_2\)FeSiO\(_4\) suggest a…

Strongly Correlated Electrons · Physics 2025-01-20 W. Hergett , N. Bouldi , M. Jonak , C. Neef , C. Ritter , M. Abdel-Hafiez , F. Seewald , H. -H. Klauss , M. W. -Haverkort , R. Klingeler

An explanation of paradoxical behavior of the residual resistivity rho_0 of the heavy-fermion metal CeCoIn5 in magnetic fields and under pressure is developed. The source of this behavior is identified as a flattening of the single-particle…

Strongly Correlated Electrons · Physics 2012-09-04 V. R. Shaginyan , A. Z. Msezane , K. G. Popov , J. W. Clark , M. V. Zverev , V. A. Khodel

We report single crystal growth and magnetic susceptibility and neutron diffraction studies of the S=1/2 quasi-1D antiferromagnet CaCu2O3. The structure of this material is similar to that of the prototype two-leg spin-ladder compound…

Condensed Matter · Physics 2009-10-31 V. Kiryukhin , Y. J. Kim , K. J. Thomas , F. C. Chow , R. W. Erwin , Q. Huang , M. A. Kastner , R. J. Birgeneau

Neutron-scattering experiments were performed to study the magnetic field effect on the electron-doped cuprate superconductor Nd_{1.86}Ce_{0.14}CuO_4, which shows the coexistence of magnetic order and superconductivity. The (1/2 3/2 0)…

Superconductivity · Physics 2009-11-07 M. Matsuda , S. Katano , T. Uefuji , M. Fujita , K. Yamada

CeCoIn5 is a heavy fermion superconductor with strong similarities to the high-Tc cuprates, including quasi-two-dimensionality, proximity to antiferromagnetism, and probable d-wave pairing arising from a non-Fermi-liquid normal state.…

The strange metal behavior in cuprate superconductors - characterized by linear in temperature resistivity and anomalous Hall transport - stands in stark contrast to the expectation of conventional Fermi liquid (FL) theory. Remarkably, the…

We have investigated the underlying magnetism in newly discovered single crystal Kondo lattices CeXAl4Si2, where X = Rh, Ir. We show that the compound undergoes an incommensurate-to-commensurate magnetic transition at Tc = 9.19 K (10.75 K…

Strongly Correlated Electrons · Physics 2016-10-31 J. Gunasekera , L. Harriger , A. Dahal , A. Maurya , T. Heitmann , S. Disseler , A. Thamizhavel , S. Dhar , D. K. Singh

We report the results of our detailed magnetotransport studies on single crystals of the antiferromagnetic heavy-fermion superconductor Ce$_3$PdIn$_{11}$. Electrical resistivity measurements, carried out in different magnetic field…

Superconductivity · Physics 2019-02-26 Debarchan Das , Daniel Gnida , Dariusz Kaczorowski

Metals typically have multiple Fermi surface sheets, and when they enter the superconducting state, some electrons on these sheets may remain uncondensed, or their superconducting pairs can be rapidly destroyed by a magnetic field.…

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