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Related papers: Hall-effect in LuNi_2B_2C and YNi_2B_2C borocarbid…

200 papers

The borocarbides RNi2B2C (R=Gd, Ho, Er) exhibit a large variety of magnetic states and as a consequence rich phase diagrams. We have analyzed the nature of these states by specific heat investigations. The data were measured down to 0.5 K…

Strongly Correlated Electrons · Physics 2008-12-31 M. ElMassalami R. M. Saeed , C. M. Chaves , H. Takeya , M. Doerr , H. Michor , M. Rotter

We carried out electrical resistivity experiments on (Yb,La)Rh2Si2 and on Yb(Rh,Ir)2Si2 under pressure and in magnetic fields. YbRh2Si2 exhibits a weak antiferromagnetic transition at atmospheric pressure with a N\'eel temperature of only…

Strongly Correlated Electrons · Physics 2010-03-11 M. Nicklas , M. E. Macovei , J. Ferstl , C. Krellner , C. Geibel , F. Steglich

We report temperature dependent resistivity, specific heat, magnetic susceptibility and thermoelectric power measurements made on the heavy fermion system YbNi2B2C, for both as grown and annealed single crystals. Our results demonstrate a…

Strongly Correlated Electrons · Physics 2009-11-07 M. A. Avila , S. L. Bud'ko , P. C. Canfield

The Hall resistivity, electrical resistivity and magnetization of single crystals of the tetragonal ferromagnet Yb14MnSb11 are reported as a function of the direction of the current, I, and magnetic field, H with respect to the principal…

Strongly Correlated Electrons · Physics 2009-11-13 Brian C. Sales , Rongying Jin , David Mandrus

Experimental results for the susceptibility, specific heat, 4f occupation number, Hall effect and magnetoresistance for single crystals of YbAl$_{3}$ show that, in addition to the Kondo energy scale $k_{B}T_{K}$ $% \sim $ 670K, there is a…

Hall effect and magnetoresistance have been measured on single crystals of $NdFeAsO_{1-x}F_{x}$ with x = 0 ($T_c$ = 0 $ $K) and x = 0.18 ($T_c$ = 50 $ $K). For the undoped samples, strong Hall effect and magnetoresistance with strong…

Superconductivity · Physics 2009-11-13 Peng Cheng , Huan Yang , Ying Jia , Lei Fang , Xiyu Zhu , Gang Mu , Hai-Hu Wen

In underdoped YBa_2Cu_3O_x (YBCO) with x = 6.63, the opening of the pseudogap at T^* ~ 160 K has a strong effect on the Hall angle tan(theta). While the Hall response is significantly reduced, the diagonal current is relatively unaffected.…

Superconductivity · Physics 2007-05-23 Z. A. Xu , Y. Zhang , N. P. Ong

We report Hall measurement of the normal state in K- and Co-doped BaFe$_2$As$_2$, as well NaFe$_{1-x}$Co$_x$As. We found that a power-law temperature dependence of Hall angle, cot$\theta_{\rm H}$$\propto$ $T^\beta$, prevails in normal state…

Superconductivity · Physics 2013-01-10 Y. J. Yan , A. F. Wang , X. G. Luo , Z. Sun , J. J. Ying , G. J. Ye , P. Chen , J. Q. Ma , X. H. Chen

Superconductivity in LaRu$_3$Si$_2$ with the honeycomb structure of Ru atoms has been investigated. It is found that the normal state specific heat C/T exhibits a deviation from the Debye model down to the lowest temperature. A relation…

Superconductivity · Physics 2012-03-23 Sheng Li , Bin Zeng , Xiangang Wan , Fei Han , Jian Tao , Huan Yang , Zhihe Wang , Hai-Hu Wen

The transverse (Hall) voltage in thin films of the high-temperature superconductor YBa$_{2}$Cu$_{3}$O$_{7-\delta}$ with an artificial periodic pinning array is investigated. Columnar defect regions along the crystallographic $c$ axis, in…

Superconductivity · Physics 2018-09-20 Georg Zechner , Wolfgang Lang , Meirzhan Dosmailov , Marius A. Bodea , Johannes D. Pedarnig

The Hall resistivity and magnetization have been investigated in the ferromagnetic state of the bilayered manganite La(2-2x)Sr(1+2x)Mn2O7 (x=0.36). The Hall resistivity shows an increase in both the ordinary and anomalous Hall coefficients…

Strongly Correlated Electrons · Physics 2009-11-11 Y. Hirobe , Y. Ashikawa , R. Kawasaki , K. Noda , D. Akahoshi , H. Kuwahara

The in-plane normal-state resistivity of Zn-doped YBa2Cu3O7-d and heavily underdoped pure YBCO single crystals is measured down to low temperatures under magnetic fields up to 18 T. We found that the temperature dependence of the…

Superconductivity · Physics 2007-05-23 Kouji Segawa , Yoichi Ando

Measurements of the Hall effect, thermoelectric power, magnetic susceptibility and upper and lower critical fields were performed on single crystals of SrFe(2-x)Ni(x)As2, an FeAs-based superconducting system that exhibits a reduced…

Superconductivity · Physics 2010-01-30 N. P. Butch , S. R. Saha , X. H. Zhang , K. Kirshenbaum , R. L. Greene , J. Paglione

The anomalous properties of the Hall constant in the normal state of high-$T_c$ superconductors are investigated within the single-band Hubbard model. We argue that the Mori theory is the appropriate formalism to address the Hall constant,…

Condensed Matter · Physics 2009-10-28 Ekkehard Lange

Various physical properties of the pyrochlore oxide Y2-xBixIr2O7 have been studied. The magnetizations M measured under the conditions of the zero-field-cooling(ZFC) and the field-cooling(FC) have different values below the temperature…

Strongly Correlated Electrons · Physics 2009-11-10 Natsuki Aito , Minoru Soda , Yoshiaki Kobayashi , Masatoshi Sato

High-pressure electrical resistivity, r(T), measurements on intermetallic Pr(Co, Ni, Pt)2B2C compounds were performed down to 2K. At room pressure the r(T) in a-b direction curves for the non superconducting Pr(Co, Ni)2B2C compounds exhibit…

Superconductivity · Physics 2015-05-20 R Falconi , A Durán , M Núñez-Regueiro , R Escudero

Here we present the magnetic properties and upper critical field (BC2) of polycrystalline Y(Ba1-xSrx)2Cu3O7-{\delta} superconductors, which are being determined through detailed ac/dc susceptibility and resistivity under magnetic field…

Recently a hybrid s+g-wave pairing is proposed to describe the experimental observation for a nodal structure of the superconducting gap in borocarbide YNi$_2$B$_2$C and possibly LuNi$_2$B$_2$C. In this paper the impurity effects on the…

Superconductivity · Physics 2009-11-10 Qingshan Yuan , Hong-Yi Chen , H. Won , S. Lee , K. Maki , P. Thalmeier , C. S. Ting

We observed superconductivity ($T_{c}$ $\simeq$2-3 K) in Li$_{x}$RhB$_{y}$ intermetallics wherein $x$ and $y$ vary over a wide compositional range. The crystal structure consists of cubic unit-cell ($a$ $\simeq$ 12.1 \AA ) with…

Superconductivity · Physics 2015-05-12 H. Takeya , M. ElMassalami , H. S. Amorim , H. Fujii , T. Mochiku , Y. Takano

We perform a thorough first-principles study on superconductivity in yttrium carbide halide Y$_2$$X_2$C$_2$ ($X$=Cl, Br, I) whose maximum transition temperature ($T_{\rm c}$) amounts to $\sim$10 K. A detailed analysis on the optimized…

Superconductivity · Physics 2021-05-05 Ryosuke Akashi , Ryotaro Arita , Chao Zhang , K. Tanaka , J. S. Tse