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The transition--metal oxide CaCu$_3$Ru$_4$O$_{12}$ with perovskite--type structure shows characteristic properties of an intermediate--valence system. The temperature--dependent susceptibility exhibits a broad maximum around $150 - 160$ K.…

Strongly Correlated Electrons · Physics 2009-09-24 A. Krimmel , A. Günther , W. Kraetschmer , H. Dekinger , N. Büttgen , V. Eyert , A. Loidl , D. V. Sheptyakov , E. -W. Scheidt , W. Scherer

Charge density wave (CDW) systems are proposed to exhibit application potential for electronic and optoelectronic devices. Therefore, identifying new materials that exhibit a CDW state at room temperature is crucial for the development of…

We have performed high-pressure, electrical resistivity, and specific heat measurements on CeTe3 single crystals. Two magnetic phases with nonparallel magnetic easy axes were detected in electrical resistivity and specific heat at low…

Strongly Correlated Electrons · Physics 2009-05-02 D. A. Zocco , J. J. Hamlin , T. A. Sayles , M. B. Maple , J. -H. Chu , I. R. Fisher

Results of high resolution x-ray diffraction experiments are presented for single crystals of the spin gap compound BaCuSi$_2$O$_6$ in the temperature range from 16 to 300 K. The data show clear evidence of a transition from the room…

Strongly Correlated Electrons · Physics 2009-11-11 E. C. Samulon , Z. Islam , S. E. Sebastian , P. B. Brooks , M. K. McCourt , J. Ilavsky , I. R. Fisher

We have investigated the non-centrosymmetric tetragonal heavy-fermion compound CeAuAl3 using muon spin rotation (muSR), neutron diffraction (ND) and inelastic neutron scattering (INS) measurements. We have also revisited the magnetic,…

We present details of materials synthesis, crystal structure, and anisotropic magnetic properties of single crystals of CeAlGe, a proposed type-II Weyl semimetal. Single-crystal x-ray diffraction confirms that CeAlGe forms in…

Strongly Correlated Electrons · Physics 2018-12-26 H. Hodovanets , C. J. Eckberg , P. Y. Zavalij , H. Kim , W. -C. Lin , M. Zic , D. J. Campbell , J. S. Higgins , J. Paglione

Single crystals of $R$Cd$_{3}$P$_{3}$ ($R$ = La and Ce) have been investigated by magnetization, electrical resistivity, Hall coefficient, and specific heat. Magnetization measurements of CeCd$_{3}$P$_{3}$ demonstrate clear quasi-2D…

Strongly Correlated Electrons · Physics 2022-06-14 Jeonghun Lee , Anja Rabus , N. R. Lee-Hone , D. M. Broun , Eundeok Mun

Aliovalent rare earth substitution into the alkaline earth site of CaFe2As2 single-crystals is used to fine-tune structural, magnetic and electronic properties of this iron-based superconducting system. Neutron and single crystal x-ray…

Superconductivity · Physics 2015-03-19 S. R. Saha , N. P. Butch , T. Drye , J. Magill , S. Ziemak , K. Kirshenbaum , P. Y. Zavalij , J. W. Lynn , J. Paglione

We report the observation of hole cyclotron resonance (CR) in InMnAs/(Al,Ga)Sb heterostructures in a wide temperature range covering both the paramagnetic and ferromagnetic phases. We observed two pronounced resonances that exhibit drastic…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 G. A. Khodaparast , J. Kono , Y. H. Matsuda , S. Ikeda , N. Miura , T. Slupinski , A. Oiwa , H. Munekata , Y. Sun , F. V. Kyrychenko , G. D. Sanders , C. J. Stanton

The Ce(1-x)LaxCrGe3 (x = 0, 0.19, 0.43, 0.58 and 1) intermetallic compound system has been investigated by magnetization measurements and neutron scattering techniques to determine the effect of La-doping on the magnetic ordering and…

The molecular dynamics in the ambient-pressure solid phase of (1,1,2)-trichloroethane is studied by means of broadband dielectric spectroscopy and molecular dynamics simulations. The dielectric spectra of polycrystalline samples obtained by…

We examined the magnetic properties of the square-lattice antiferromagnets CeMnAsO and LaMnAsO and their solid solutions La1-xCexMnAsO by resistivity, magnetic susceptibility, and heat capacity measurements below room temperature. A…

Strongly Correlated Electrons · Physics 2015-05-30 Yuto Tsukamoto , Yoshihiko Okamoto , Kazuyuki Matsuhira , Myung-Hwan Whangbo , Zenji Hiroi

We have investigated the bulk and microscopic properties of the rhombohedral intermediate valence superconductor CeIr$_3$ by employing magnetization, heat capacity, and muon spin rotation and relaxation ($\mu$SR) measurements. The magnetic…

Powder X-ray diffraction (PXRD) and single-crystal neutron scattering were used to study in detail the structural properties of the Cs2CuCl(4-x)Br(x) series, good realizations of layered triangular antiferromagnets. Detailed…

The magnetic behavior of single-crystalline CeCuGa3 has been investigated. The compound forms in a tetragonal BaAl4-type structure consisting of rare-earth planes separated by Cu-Ga layers. If the Cu-Ga site disorder is reduced, CeCuGa3…

Strongly Correlated Electrons · Physics 2015-06-04 Devang A. Joshi , P. Burger , P. Adelmann , D. Ernst , T. Wolf , K. Sparta , G. Roth , K. Grube , C. Meingast , H. v. Löhneysen

Cerium-doped manganite thin films were grown epitaxially by pulsed laser deposition at $720 ^\circ$C and oxygen pressure $p_{O_2}=1-25 $Pa and were subjected to different annealing steps. According to x-ray diffraction (XRD) data, the…

Strongly Correlated Electrons · Physics 2009-11-13 R. Werner , C. Raisch , V. Leca , V. Ion , S. Bals , G. Van Tendeloo , T. Chassé , R. Kleiner , D. Koelle

Solution-grown single crystals of Fe2OBO3 were characterized by specific heat, Mossbauer spectroscopy, and x-ray diffraction. A peak in the specific heat at 340 K indicates the onset of charge order. Evidence for a doubling of the unit cell…

Strongly Correlated Electrons · Physics 2007-08-23 M. Angst , P. Khalifah , R. P. Hermann , H. J. Xiang , M. -H. Whangbo , V. Varadarajan , J. W. Brill , B. C. Sales , D. Mandrus

Electrons and holes can spontaneously form excitons and condense in a semimetal or semiconductor, as predicted decades ago. This type of Bose condensation can happen at much higher temperatures in comparison with dilute atomic gases.…

Mesoscale and Nanoscale Physics · Physics 2023-02-24 Qiang Gao , Yang-hao Chan , Yuzhe Wang , Haotian Zhang , Jinxu Pu , Shengtao Cui , Yichen Yang , Zhengtai Liu , Dawei Shen , Zhe Sun , Juan Jiang , Tai C. Chiang , Peng Chen

Layered delafossite-type compounds and related transition metal dichalcogenides, characterized by their triangular net structures, serve as prototypical systems for exploring the intricate interplay between crystal structure and magnetic…

Materials Science · Physics 2025-02-11 Felix Eder , Catherine Witteveen , Enrico Giannini , Fabian O. von Rohr

The results of magnetic susceptibility, electrical resistivity ($\rho$), heat-capacity (C) and thermopower (S) measurements on CeCuAs2, forming in ZrCuSi2-type tetragonal structure, are reported. Our investigations reveal that Ce is…