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Crystals of SrMn2Sb2 and BaMn2Sb2 were grown using Sn flux and characterized by powder and single-crystal x-ray diffraction, respectively, and by single-crystal electrical resistivity rho, heat capacity Cp, and magnetic susceptibility chi…

Strongly Correlated Electrons · Physics 2018-01-10 N. S. Sangeetha , V. Smetana , A. -V. Mudring , D. C. Johnston

Single crystals of superconducting BaFe$_{1.8}$Co$_{0.2}$As$_2$ were exposed to neutron irradiation in a fission reactor. The introduced defects decrease the superconducting transition temperature (by about 0.3 K) and the upper critical…

Superconductivity · Physics 2015-05-13 M. Eisterer , M. Zehetmayer , H. W. Weber , J. Jiang , J. D. Weiss , A. Yamamoto , E. E. Hellstrom

We report results of 75As nuclear magnetic resonance (NMR) experiments on a self-flux grown high-quality single crystal of SrFe2As2. The NMR spectra clearly show sharp first-order antiferromagnetic (AF) and structural transitions occurring…

Strongly Correlated Electrons · Physics 2009-06-10 Kentaro Kitagawa , Naoyuki Katayama , Kenya Ohgushi , Masashi Takigawa

The chromium arsenides BaCr2As2 and BaCrFeAs2 with ThCr2Si2 type structure (space group I4/mmm; also adopted by '122' iron arsenide superconductors) have been suggested as mother compounds for possible new superconductors. DFT-based…

We present magnetic and transport properties of PrRh$_{2}$Si$_{2}$ single crystals which exhibit antiferromagnetic order below T$_{N}$ = 68 K. Well defined anomalies due to magnetic phase transition are observed in magnetic susceptibility,…

Strongly Correlated Electrons · Physics 2009-08-28 V K Anand , Z Hossain , G Behr , G Chen , M Nicklas , C Geibel

We report the synthesis, and structural and physical properties of CaFe4As3 single crystals. Needle-like single crystals of CaFe4As3 were grown out of Sn flux and the compound adopts an orthorhombic structure as determined by X-ray…

Superconductivity · Physics 2015-05-27 A. B. Karki , G. T. McCandless , S. Stadler , Y. M. Xiong , J. Li , Julia Y. Chan , R. Jin

Two-dimensional crystals with coupling of ferroelasticity and attractive electronic properties offer unprecedent opportunities for achieving long-sought controllable devices. But so far, the reported proposals are mainly based on…

Materials Science · Physics 2019-10-22 Ting Zhang , Yandong Ma , Xilong Xu , Chengan Lei , Baibiao Huang , Ying Dai

Low-temperature specific heat was measured on the BaFe1.9Ni0.1As2 single crystals with critical transi-tion temperature Tc = 20.1 K. A clear specific heat jump with the value \DeltaC/T|Tc \approx 23 mJ/mol K^2 has been observed. In…

Superconductivity · Physics 2010-07-06 Bin Zeng , Gang Mu , Huiqian Luo , Hai-Hu Wen

Structural and physical properties determined by measurements on large single crystals of the anisotropic ferromagnet MnBi are reported. The findings support the importance of magneto-elastic effects in this material. X-ray diffraction…

Materials Science · Physics 2014-11-19 Michael A. McGuire , Huibo Cao , Bryan C. Chakoumakos , Brian C. Sales

Intrinsic, in-plane anisotropy of electrical resistivity was studied on mechanically detwinned single crystals of SrFe$_2$As$_2$ above and below the temperature of the coupled structural/magnetic transition, $T_{\textrm{TO}}$. Resistivity…

Understanding the microscopic origins of electronic phases in high-transition temperature (high-Tc) superconductors is important for elucidating the mechanism of superconductivity. In the paramagnetic tetragonal phase of BaFe2-xTxAs2 (where…

Superconductivity · Physics 2014-08-13 Xingye Lu , J. T. Park , Rui Zhang , Huiqian Luo , Andriy H. Nevidomskyy , Qimiao Si , Pengcheng Dai

The temperature dependence of the electrical resistivity of the heterostructures consisting of single crystalline LaMnO$_3$ samples with different crystallographic orientations covered by the epitaxial ferroelectric…

Strongly Correlated Electrons · Physics 2017-10-20 D. P. Pavlov , I. I. Piyanzina , V. M. Mukhortov , A. M. Balbashov , D. A. Tayurskii , I. A. Garifullin , R. F. Mamin

The optical properties of a large, detwinned single crystal of BaFe$_2$As$_2$ have been examined over a wide frequency range above and below the structural and magnetic transition at $T_{\rm N}\simeq 138$ K. Above $T_{\rm N}$ the real part…

Strongly Correlated Electrons · Physics 2020-11-12 Christopher C. Homes , Thomas Wolf , Christoph Meingast

We report the in-plane anisotropy of the Seebeck and Nernst coefficients as well as of the electrical resistivity determined for the series of the strain-detwinned single crystals of Ba(Fe1-xCox)2As2. Two underdoped samples (x = 0.024,…

Superconductivity · Physics 2018-06-06 Marcin Matusiak , Krzysztof Rogacki , Thomas Wolf

Single crystalline samples of Ba(Fe$_{1-x}$Co$_x$)$_2$As$_2$ with $x < 0.12$ have been grown and characterized via microscopic, thermodynamic and transport measurements. With increasing Co substitution, the thermodynamic and transport…

Superconductivity · Physics 2009-11-13 N. Ni , M. E. Tillman , J. -Q. Yan , A. Kracher , S. T. Hannahs , S. L. Bud'ko , P. C. Canfield

We present a detailed study of R3Ni2-xSn7 (R = La, Ce, Pr and Nd) single crystals by measurements of crystal structure, stoichiometry, temperature dependent magnetic susceptibility, magnetization, electrical resistivity, magnetoresistance,…

Strongly Correlated Electrons · Physics 2012-12-12 Xiao Lin , Sergey L. Bud'ko , Srinivasa Thimmaiah , Paul C. Canfield

The structural and magnetic phase transitions of the ternary iron arsenides SrFe2As2 and EuFe2As2 were studied by temperature-dependent x-ray powder diffraction and 57-Fe Moessbauer spectroscopy. Both compounds crystallize in the tetragonal…

The effects of Co-substitution on Ba(Ni$_{1-x}$Co$_x$)$_2$As$_2$ ($0\leq x\leq 0.251$) single crystals grown out of Pb flux are investigated via transport, magnetic, and thermodynamic measurements. BaNi$_2$As$_2$ exhibits a first order…

We present a detailed study of RNi1-xBi2+-y (R = La-Nd, Sm, Gd-Dy) single crystals by measurements of stoichiometry and temperature dependent magnetic susceptibility, magnetization, and electrical resistivity. This series forms with partial…

Strongly Correlated Electrons · Physics 2012-10-23 Xiao Lin , Warren E. Straszheim , Sergey L. Bud'ko , Paul C. Canfield

High-quality single crystals of the half-Heusler compound DyNiSb were investigated for their low temperature thermodynamic and magnetotransport properties. Magnetic susceptibility, heat capacity, and electrical resistivity measurements…