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We measured thermal conductivity, k, thermoelectric power, S, and dc electric conductivity, sigma, of La_{5/8-x}Pr_{x}Ca_{3/8}MnO_{3}, showing an intricate interplay between metallic ferromagnetism (FM) and charge ordering (CO) instability.…

Strongly Correlated Electrons · Physics 2009-10-31 K. H. Kim , M. Uehara , C. Hess , P. A. Sharma , S-W. Cheong

Dc magnetic measurements across the charge ordering (CO) transition temperature (T$_{CO}$) in polycrystalline Pr$_{0.5}$Ca$_{0.5}$Mn$_{0.975}$Al$_{0.025}$O$_3$ have been performed under simultaneous influence of external hydrostatic…

Strongly Correlated Electrons · Physics 2020-11-18 Sudip Pal , Kranti Kumar , A. Banerjee

The results of magnetic susceptibility, electrical resistivity (rho), and heat capacity measurements as a function of temperature are reported for the alloys, Ce2Rh(1-x)Co(x)Si3, crystallizing in an AlB2-derived hexagonal strcture. Ce2RhSi3…

Strongly Correlated Electrons · Physics 2008-03-06 Swapnil Patil , Kartik K Iyer , K. Maiti , E. V. Sampathkumaran

Surface corrugation functions, derived from elastic helium atom scattering (HAS) diffraction patterns at different temperatures, reveal that the Cu2+ rows in the (001) surface of LiCu2O2 undergo an outward displacement of about 0.15 {\AA}…

Strongly Correlated Electrons · Physics 2015-03-14 Xuetao Zhu , Yangyang Yao , H. C. Hsu , F. C. Chou , M. El-Batanouny

Considering certain interesting features in the previously reported 166Er Moessbauer effect and neutron diffraction data on the polycrystalline form of ErPd2Si2 crystallizing in ThCr2Si2-type tetragonal structure, we have carried out…

Strongly Correlated Electrons · Physics 2009-11-13 E. V. Sampathkumaran , Niharika Mohapatra , Kartik K Iyer , C. D. Cao , W. Loeser , G. Behr

We report on neutron diffraction, thermal expansion, magnetostriction, dielectric, and specific heat measurements on polycrystalline FeCr2S4 in external magnetic fields. The ferrimagnetic ordering temperatures $T_{\mathrm{C}}\approx 170$ K…

We have investigated magnetic, dielectric and magnetodielectric properties of La2CoMnO6 nanoparticles prepared by sol-gel method. Magnetization measurements revealed two distinct ferromagnetic transitions at 218 K and 135 K that can be…

Materials Science · Physics 2015-06-03 J. Krishna Murthy , A. Venimadhav

Charge fluctuations in the quasi-one-dimensional material Li0.9Mo6O17 are analyzed based on a multi orbital extended Hubbard model. A charge ordering transition induced by Coulomb repulsion is found with a charge ordering pattern different…

Strongly Correlated Electrons · Physics 2015-08-03 J. Merino , J. V. Alvarez

Single Crystals of Nd$_{1-x}$Ca$_{1+x}$MnO$_{4}$ have been prepared by the traveling floating-zone method, and possible evidence of a charge -orbital density wave in this material presented earlier [PRB68,092405 (2003)] using High…

Strongly Correlated Electrons · Physics 2015-06-25 Sher Alam , A. T. M. N. Islam , T. Nagai , M. Xu , Javed Ahmad , Y. Matsui , I. Tanaka

Intercalation of magnetic atoms into the van der Waals gaps of layered transition metal dichalcogenides offers an excellent platform to produce exotic physical properties. Here, we report a detailed study of magnetic and electrical…

Strongly Correlated Electrons · Physics 2024-07-16 Moumita Nandi , Surajit Dutta , A. Thamizhavel , S. K. Dhar

Newly designed Li-ion battery cathode materials with high capacity and greater flexibility in chemical composition will be critical for the growing electric vehicles market. Cathode structures with cation disorder were once considered…

The charge density wave (CDW) is a macroscopic quantum state characterized by long-range lattice distortion and modulated charge density. Conventionally, CDWs compete with other electronic orders (e.g. superconductivity) and are suppressed…

Strongly Correlated Electrons · Physics 2025-07-23 Liucheng Chen , Mingwei Ma , Xiaohui Yu , Fang Hong

We report observation of substantial thermal relaxation in single crystal of charge ordered system Pr$_{0.63}$Ca$_{0.37}$MnO$_3$ in an applied magnetic field of H = 8T. The relaxation is observed when the temperature is scanned in presence…

Strongly Correlated Electrons · Physics 2009-10-31 A. K. Raychaudhuri , Ayan Guha , I. Das , R. Rawat , C. N. R. Rao

The crystal structure of Fe3O4 below the 122 K Verwey transition has been refined using high-resolution X-ray and neutron powder diffraction data. The refinements give direct evidence for charge ordering (CO) over four independent…

Strongly Correlated Electrons · Physics 2009-11-07 J. P. Wright , J. P. Attfield , P. G. Radaelli

CoSeO$_4$ has a structure consisting of edge-sharing chains of Co$^{2+}$ octahedra which are held together by SeO$_4^{2-}$ tetrahedra via shared oxygen atoms at the edges of the octahedra. DC magnetization measurements indicate a transition…

We have investigated the specific heat and resistivity of a single crystal of Pr_{0.63}Ca_{0.37}MnO_3 around the charge ordering (CO) transition temperature, T_{CO}, in the presence of high magnetic fields (<=12T) which can melt the charge…

Strongly Correlated Electrons · Physics 2007-05-23 K. S. Nagapriya , A. K. Raychaudhuri , Bhavtosh Bansal , V. Venkataraman , Sachin Parashar , C. N. R. Rao

Specific heat studies of the Sr$_{1-x}$Ba$_x$Mn$_{1-y}$Ti$_y$O$_3$ polycrystalline samples performed by the relaxation and DSC methods over the temperature range 2 - 450 K are reported. Anomalies accompanying the…

Statistical Mechanics · Physics 2025-07-31 J. Wieckowski , A. Szewczyk , M. U. Gutowska , B. Dabrowski

The La$_2$CoIr$_{1-x}$Ti$_x$O$_6$ double perovskite series serves as an effective platform for investigating the evolution of magnetic and electronic properties as a function of chemical pressure (doping) or hydrostatic pressure due to the…

Using ab initio dynamical mean-field theory we explore the electronic and magnetic states of layered Li$_x$MnO$_2$ as a function of $x$, the state of charge. Constructing real-space Wannier projections of Kohn-Sham orbitals based on the…

Strongly Correlated Electrons · Physics 2023-10-18 Hrishit Banerjee , Clare P. Grey , Andrew J. Morris

The magnetic properties of polycrystalline Tb(Co_{x}Ni_{1-x})_{2}B_{2}C (x=0.2,0.4,0.6,0.8) samples were probed by magnetization, specific heat, ac susceptibility, and resistivity techniques. For x{\neq}0.4, the obtained curves are…

Strongly Correlated Electrons · Physics 2015-05-12 M. ElMassalami , H. Takeya , A. M. Gomes , T. Paiva , R. R. dos Santos