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We report calorimetric, magnetic and electric transport properties of single-crystal CaRuO3 and SrRuO3 as a function of temperature T and applied magnetic field B. We find that CaRuO3 is a non-Fermi-liquid metal near a magnetic instability,…

Strongly Correlated Electrons · Physics 2008-05-07 G. Cao , O. Korneta , S. Chikara , L. E. DeLong , P. Schlottmann

The 5$d$ based SrIrO$_3$ represents prototype example of nonmagnetic correlated metal which mainly originates from a combined effect of spin-orbit coupling, lattice dimensionality and crystal structure. Therefore, tuning of these parameters…

Strongly Correlated Electrons · Physics 2021-02-24 Rachna Chaurasia , K. Asokan , Kranti Kumar , A. K. Pramanik

We report the results of Hall coefficient R_H and magnetoresistance (MR) measurements on single crystalline samples of Sr3Ru2O7 grown by the floating zone method. R_H was found to be positive over the entire temperature range studied (0.3 -…

Strongly Correlated Electrons · Physics 2010-10-11 Y. Liu , R. Jin , Z. Q. Mao , K. D. Nelson , M. K. Haas , R. J. Cava

SrRuO$_3$ is a metallic ferromagnet. Its electrical resistivity is reported for temperatures up to 1000K; its Hall coefficient for temperatures up to 300K; its specific heat for temperatures up to 230K. The energy bands have been calculated…

Condensed Matter · Physics 2009-10-28 P. B. Allen , H. Berger , O. Chauvet , L. Forro , T. Jarlborg , A. Junod , B. Revaz , G. Santi

We present experimental evidence for small-moment magnetism below the ferromagnetic transition temperature (T_c3 = 183 K) in the quasi-one-dimensional metal BaIrO_3. Further, we identify rearrangement of the local magnetic moment…

Strongly Correlated Electrons · Physics 2009-11-11 M. L. Brooks , S. J. Blundell , T. Lancaster , W. Hayes , F. L. Pratt , P. P. C. Frampton , P. D. Battle

The reflectivity of the itinerant ferromagnet SrRuO_3 has been measured between 50 and 25,000 cm-1 at temperatures ranging from 40 to 300 K, and used to obtain conductivity, scattering rate, and effective mass as a function of frequency and…

Strongly Correlated Electrons · Physics 2009-10-31 P. Kostic , Y. Okada , Z. Schlesinger , J. W. Reiner , L. Klein , A. Kapitulnik , T. H. Geballe , M. R. Beasley

We investigated the nature of transport and magnetic properties in SrIr0.5Ru0.5O3, (SIRO) which has characteristics intermediate between a correlated non-Fermi liquid state and an itinerant Fermi liquid state, by growing perovskite thin…

Strongly Correlated Electrons · Physics 2015-09-11 Abhijit Biswas , Yong Woo Lee , Sang Woo Kim , Yoon Hee Jeong

Here, we study the electrical transport and specific heat in 4$d$ based ferromagnetic material SrRuO$_3$ and its Ti substituted SrRu$_{1-x}$Ti$_x$O$_3$ series ($x$ $\le$ 0.7). The SrRuO$_3$ is a metal and shows itinerant ferromagnetism with…

Strongly Correlated Electrons · Physics 2020-09-02 Renu Gupta , R. Rawat , A. K. Pramanik

Motivated by the unusual features observed in the transport properties of the ferromagnetic "bad metal" $SrRuO_{3}$, we construct a model incorporating essential features of the realistic structure of this nearly cubic material. In…

Strongly Correlated Electrons · Physics 2009-11-07 M. S. Laad , E. Müller-Hartmann

We report transport and thermodynamic properties of stoichiometric single crystals of the hexagonal iron-pnictide FeCrAs. The in-plane resistivity shows an unusual "non-metallic" dependence on temperature T, rising continuously with…

Strongly Correlated Electrons · Physics 2009-11-13 W. Wu , A. McCollam , I. Swainson , P. M. C. Rourke , D. G. Rancourt , S. R. Julian

The 5d-electron based BaIrO3 is a nonmetallic weak ferromagnet with a Curie temperature at Tc=175 K. Its largely extended orbitals generate strong electron-lattice coupling, and magnetism and electronic structure are thus critically linked…

Strongly Correlated Electrons · Physics 2009-11-10 G. Cao , X. N. Lin , S. Chikara , V. Durairaj , E. Elhami

The magnetic nature of the altermagnet candidate RuO$_2$ remains under debate. It has been recently shown from quantum oscillations and angle-resolved photoemission spectroscopy (ARPES) that the high-quality RuO$_2$ bulk single crystal is a…

Materials tuned to the neighbourhood of a zero temperature phase transition often show the emergence of novel quantum phenomena. Much of the effort to study these new effects, like the breakdown of the conventional Fermi-liquid theory of…

Strongly Correlated Electrons · Physics 2014-05-06 S. E. Rowley , L. J. Spalek , R. P. Smith , M. P. M. Dean , G. G. Lonzarich , J. F. Scott , S. S. Saxena

Measurements of the resistivity of single-crystalline U_3Ni_3Sn_4 under hydrostatic pressure up to 1.8 GPa are reported. We show that the temperature T_FL, below which the resistivity obeys the Fermi-liquid expression rho ~ T^2, increases…

Strongly Correlated Electrons · Physics 2009-10-31 P. Estrela , A. de Visser , F. R. de Boer , T. Naka , L. Shlyk

Heat capacity experiments, crystal structure determination and transmission electron microscopy have been carried out on U3Cu3Sn4 single-crystals. U3Cu3Sn4 was confirmed to be a heavy-fermion antiferromagnet (TN=13(1) K) with a low…

Strongly Correlated Electrons · Physics 2009-10-31 L. Shlyk , P. Estrela , J. C. Waerenborgh , L. E. De Long , A. de Visser , D. P. Rojas , F. Gandra , M. Almeida

The orthorhombic perovskite SrIrO3 is a semimetal, an intriguing exception in iridates where the strong spin-orbit interaction coupled with electron correlations tends to impose a novel insulating state. We report results of our…

Strongly Correlated Electrons · Physics 2016-07-06 H. Zheng , J. Terzic , Feng Ye , X. G. Wan , D. Wang , Jinchen Wang , Xiaoping Wang , P. Schlottmann , S. J. Yuan , G. Cao

Electron-doped Sr(Co{1-x}Ni{x})2As2 single crystals with compositions x = 0 to 0.9 were grown out of self-flux and SrNi2As2 single crystals out of Bi flux. The crystals were characterized using single-crystal x-ray diffraction (XRD),…

Strongly Correlated Electrons · Physics 2019-10-09 N. S. Sangeetha , L. L. Wang , A. V. Smirnov , V. Smetana , A. -V. Mudring , D. D. Johnson , M. A. Tanatar , R. Prozorov , D. C. Johnston

Thermal conductivity of Sr3Ru2O7 was measured down to 40 mK and at magnetic fields through the quantum critical endpoint at H_c = 7.85 T. A peak in the electrical resistivity as a function of field was mimicked by the thermal resistivity.…

Non-Fermi liquid behavior in some fermionic systems have attracted significant interest in last few decades. Certain pyrochlore iridates with stronger spin-orbit coupling strength have recently been added to the list. Here, we provide…

Strongly Correlated Electrons · Physics 2022-01-03 Md Salman Khan , Ilaria Carlomagno , Carlo Meneghini , P. K. Biswas , Fabrice Bert , Subham Majumdar , Sugata Ray

We observe superconductivity below a critical temperature TC = 1.8 K in single-crystal Ir3Te8, which also exhibits normal-state diamagnetism and a linear temperature dependence of electrical resistivity for a wide temperature interval, 20 K…

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