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We present magnetic susceptibility, heat capacity, and neutron diffraction measurements of polycrystalline Nd2Ru2O7 down to 0.4 K. Three anomalies in the magnetic susceptibility measurements at 146, 21 and 1.8 K are associated with an…

Strongly Correlated Electrons · Physics 2018-07-31 S. T. Ku , Dinesh Kumar , M. R. Lees , W-T. Lee , R. Aldus , A. Studer , P. Imperia , S. Asai , T. Masuda , S. W. Chen , J. M. Chen , L. J. Chang

Acoustic phonons play a special role in lattice heat transport, and confining these low-energy modes in low-dimensional materials may enable nontrivial transport phenomena. By applying lowest-order anharmonic perturbation theory to an…

Mesoscale and Nanoscale Physics · Physics 2021-09-01 Daniel Bruns , Alireza Nojeh , A. Srikantha Phani , Jörg Rottler

The crystal structure of Na0.5CoO2, determined by powder neutron diffraction, is reported. The structure consists of layers of edge-shared CoO6 octahedra in a triangular lattice, with Na ions occupying ordered positions in the interleaving…

Strongly Correlated Electrons · Physics 2009-11-10 Q. Huang , M. L. Foo , J. W. Lynn , H. W. Zandbergen , G. Lawes , Yayu Wang , B. H. Toby , A. P. Ramirez , N. P. Ong , R. J. Cava

To study the relationship between the properties of low-dimensional spin systems with weakly coupled Cu-triangles and their crystal structure, single crystals of $Cs_3Cu_3Cl_8OH$ (1) and the new $Cs_3Cu_3Cl_{7.6}Br_{0.4}OH$ (2) were grown.…

We report an investigation on structure and magnetic properties of the $S=3/2$ zigzag spin chain compound BaCoTe$_2$O$_7$. Neutron diffraction measurements reveal BaCoTe$_2$O$_7$ crystallizes in the noncentrosymmetric space group $Ama2$…

Strongly Correlated Electrons · Physics 2021-07-06 Lisi Li , Xunwu Hu , Zengjia Liu , Jia Yu , Benyuan Cheng , Sihao Deng , Lunhua He , Kun Cao , Dao-Xin Yao , Meng Wang

We present a neutron diffraction study of NaYbO$_2$, a candidate quantum spin liquid compound hosting a geometrically frustrated triangular lattice of magnetic Yb$^{3+}$ ions. We observe diffuse magnetic scattering that persists to at least…

In the quest of understanding significant variations in the physical, chemical and electronic properties of the novel functional materials, low temperature Synchrotron X-ray Diffraction (LT-SXRD) measurements on CTO (a type-II) and CMTO (a…

Materials Science · Physics 2016-08-09 Harishchandra Singh , A. K. Sinha , M. N. Singh , A. Upadhyay , Archna Sagdeo

Nanocrystalline ribbons of inverse Heusler alloy Mn2Ni1.6Sn0.4 have been synthesised by melt spinning of the arc melted bulk precursor. The single phase ribbons crystallize into a cubic structure and exhibit very fine crystallite size of <…

Materials Science · Physics 2014-12-03 Nidhi Singh , Barsha Borgohain , A. K. Srivastava , Ajay Dhar , H. K. Singh

We present a magnetometry, muon spin relaxation ($\mu$SR), and neutron scattering study of the insulating face-centered-cubic spin glass Zn$_{0.5}$Mn$_{0.5}$Te. The magnetometry and $\mu$SR results confirm a spin freezing transition around…

We report single crystal growth, electrical resistivity $\rho$, anisotropic magnetic susceptibiltiy $\chi$, and heat capacity $C_p$ measurements on the one-dimensional spin-chain ruthenate Na$_2$RuO$_4$. We observe variable range hopping…

Strongly Correlated Electrons · Physics 2018-02-21 Ashiwini Balodhi , Yogesh Singh

We calculate analytically the phase diagram of a two-dimensional square crystal and its wrapped version with defects under external homogeneous stress as a function of temperature using a simple elastic lattice model that allows for defect…

Soft Condensed Matter · Physics 2013-05-29 J. Dietel , H. Kleinert

We report the synthesis and thermoelectric transport properties of As-doped layered pnictogen oxyselenides NdO0.8F0.2Sb1-xAsxSe2 (x < 0.7), which are predicted to show high-performance thermoelectric properties based on first-principles…

We use neutron scattering to study the spin and lattice structures of single crystal and powder samples of Na$_{1-\delta}$FeAs ($T_c = 23$ K). On cooling from room temperature, the system goes through a series of phase transitions: first…

Superconductivity · Physics 2009-07-10 Shiliang Li , Clarina de la Cruz , Q. Huang , G. F. Chen , T. -L. Xia , J. L. Lou , N. L. Wang , Pengcheng Dai

We report on the crystallographic information such as lattice parameters, atomic positions, bond lengths and angles, and local crystalline distortion size and mode of single-crystal YCrO$_3$ compound by a high-resolution synchrotron X-ray…

Materials Science · Physics 2024-03-08 Qian Zhao , Si Wu , Yinghao Zhu , Junchao Xia , Hai-Feng Li

CeRh$_3$Si$_2$ has been reported to exhibit metamagnetic transitions below 5~K, a giant crystal field splitting, and anisotropic magnetic properties from single crystal magnetization and heat capacity measurements. Here we report results of…

From new neutron powder diffraction experiments on the chiral cubic ($P2{_1}3$) magnet manganese germanide MnGe, we analyse all of the possible crystal symmetry-allowed magnetic superstructures that are determined successfully from the…

Strongly Correlated Electrons · Physics 2023-01-18 V. Pomjakushin , I. Plokhikh , J. S. White , Y. Fujishiro , N. Kanazawa , Y. Tokura , E. Pomjakushina

We report a comprehensive study of dc susceptibility, specific heat, neutron diffraction, and inelastic neutron scattering measurements on polycrystalline Ba3(Cr1-xVx)2O8 samples, where x=0, 0.06, 0.15, and 0.53. A Jahn-Teller structure…

Materials Science · Physics 2013-05-02 Tao Hong , L. Y. Zhu , X. Ke , V. O. Garlea , Y. Qiu , Y. Nambu , H. Yoshizawa , M. Zhu , G. E. Granroth , A. T. Savici , Zheng Gai , H. D. Zhou

Atomic models of zigzag (n, 0)- and armchair (n,n)-like NiCl2 nanotubes (n = 4 - 29) formed by rolling (100) single layers of the bulk NiCl2 which crystallizes in the CdCl2-type structure, are constructed and their electronic properties and…

Materials Science · Physics 2007-05-23 V. V. Ivanovskaya , A. N. Enyashin , N. I. Medvedeva , A. L. Ivanovskii

Macroscopic entanglement witnesses have been put forward recently to reveal nonlocal quantum correlations between individual constituents of the solid at nonzero temperatures. Here we apply a recently proposed universal entanglement…

Strongly Correlated Electrons · Physics 2009-11-11 T. Vértesi , E. Bene

Single-wall carbon nanotubes are almost ideal systems for the investigation of exotic many-body effects due to non-Fermi liquid behavior of interacting electrons in one dimension. Recent theoretical and experimental results are reviewed…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 A. Odintsov , H. Yoshioka