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Related papers: Anisotropy of flux-flow resistivity in UPt3

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We report the first measurements of the anisotropic upper critical field $H_{c2}(T)$ for K$_{2}$Cr$_{3}$As$_{3}$ single crystals up to 60 T and $T > 0.6$ K. Our results show that the upper critical field parallel to the Cr chains,…

Superconductivity · Physics 2015-08-07 F. F. Balakirev , T. Kong , M. Jaime , R. D. McDonald , C. H. Mielke , A. Gurevich , P. C. Canfield , S. L. Bud'ko

Anisotropic properties of single crystals of SrPt$_{3}$P were studied using London penetration depth and electrical resistivity measurements. The upper critical field, $H_{c2}(T)$, was determined from four-probe electrical resistivity…

Superconductivity · Physics 2022-09-14 Kyuil Cho , S. Teknowijoyo , S. Ghimire , E. H. Krenkel , M. A. Tanatar , N. D. Zhigadlo , R. Prozorov

We have studied the lower critical fields H_{c1} of superconducting iron oxipnictide PrFeAsO_{1-y} single crystals for H parallel and perpendicular to the ab-planes. Measurements of the local magnetic induction at positions straddling the…

The microwave complex surface impedance Z_s of Y(Ni_{1-x}Pt_x)_2B_2C was measured at 0.5 K under magnetic fields H up to 7T. In nominally pure YNi_2B_2C, which is a strongly anisotropic s-wave superconductor, the flux flow resistivity…

Superconductivity · Physics 2009-11-07 K. Takaki , A. Koizumi , T. Hanaguri , M. Nohara , H. Takagi , K. Kitazawa , Y. Kato , Y. Tsuchiya , H. Kitano , A. Maeda

An experimental study of magnetic flux penetration under crossed magnetic fields in Bi2212:Pb single crystals is performed by the magneto-optic technique. The anisotropy of the flux creep rate induced by the in-plane magnetic field is…

Superconductivity · Physics 2015-06-24 L. S. Uspenskaya , A. B. Kulakov , A. L. Rakhmanov

We have revealed new features in the out-of-plane resistivity rho_c of heavily underdoped RBa_2Cu_3O_{6+x} (R=Tm,Lu) single crystals, which give evidence for two distinct mechanisms contributing the c-axis transport. We have observed a…

Superconductivity · Physics 2009-10-31 A. N. Lavrov , M. Yu. Kameneva , L. P. Kozeeva

Both the in-plane and the out-of-plane resistivities (\rho_{ab} and \rho_{c}) are measured in high-quality La_{2-x}Sr_{x}CuO_{4} (LSCO) single crystals in the lightly- to moderately-doped region, x = 0.01 to 0.10, and the resistivity…

Superconductivity · Physics 2009-11-07 Seiki Komiya , Yoichi Ando , X. F. Sun , A. N. Lavrov

Anisotropic superconducting properties including the upper critical field Hc2, thermal activation energy U0, and critical current density Jc are systematically studied in a large Ca1-xLaxFeAs2 single crystal (x ~ 0.18). The obtained Hc2…

Superconductivity · Physics 2014-06-06 Wei Zhou , Jincheng Zhuang , Feifei Yuan , Xiong Li , Xiangzhuo Xing , Yue Sun , Zhixiang Shi

In- and out-of-plane London penetration depths were measured in single crystals CaAlSi (T_{c}=6.2 K and 7.3 K) using a tunnel-diode resonator. A full 3D BCS analysis of the superfluid density is consistent with a prolate spheroidal gap,…

The characteristic features of Ca$_{10}$(Pt$_3$As$_8$)[(Fe$_{1-x}$Pt$_x$)$_2$As$_2$]$_5$ ("10-3-8") superconductor are relatively high anisotropy and a clear separation of superconductivity and structural/magnetic transitions, which allows…

Superconductivity · Physics 2012-04-11 K. Cho , M. A. Tanatar , H. Kim , W. E. Straszheim , N. Ni , R. J. Cava , R. Prozorov

Measurements of temperature-dependent in-plane resistivity, $\rho(T)$, were used to determine the upper critical field and its anisotropy in high quality single crystals of stoichiometric iron arsenide superconductor KFe$_2$As$_2$. The…

Superconductivity · Physics 2015-06-15 Yong Liu , M. A. Tanatar , V. G. Kogan , Hyunsoo Kim , T. A. Lograsso , R. Prozorov

We present magnetic field dependence of the critical current density from dc-magnetization measurements concerning the anisotropic behavior of flux line lattice (FLL) in a single crystal of YNi_2B_2C. The peak effect (PE) phenomenon is…

Superconductivity · Physics 2009-11-13 Pradip Das , C. V. Tomy , H. Takeya , S. Ramakrishnan , A. K. Grover

The upper critical field and flux pinning in MgB2 single crystals were investigated. The implications of these properties for technical applications are discussed and compared with transport properties of polycrystalline bulk samples and…

Superconductivity · Physics 2007-05-23 M. Eisterer

We report the magnetic field -- temperature ($H-T$) phase diagram of Ca$_{10}$(Pt$_4$As$_8$)[(Fe$_{1-x}$Pt$_x$)$_2$As$_2$]$_5$ ($x\approx 0.05$) single crystals, which consists of normal, vortex liquid, plastic creep and elastic creep…

Superconductivity · Physics 2015-02-02 O. E. Ayala-Valenzuela , N. Haberkorn , A. B. Karki , Jisun Kim , R. Jin , Jeehoon Kim

We report on the a.c. magnetic response of superconducting UPt_3 in a d.c. magnetic field. At low fields (H < H^*), the in-phase susceptibility shows a sharp drop at $T_c$ followed by a gradual decrease with decreasing temperature, while…

Superconductivity · Physics 2009-10-30 Brett Ellman , Louis Taillefer

The magnetization and anisotropic electrical transport properties have been measured in high quality Cu0.03TaS2 single crystal. A pronounced peak effect has been observed, indicating that the high quality and homogeneity are vital to peak…

Superconductivity · Physics 2010-12-08 X. D. Zhu , J. C. Lu , Y. P. Sun , L. Pi , Z. Qu , L. S. Ling , Z. R. Yang , Y. H. Zhang

A small angle neutron scattering study of the flux-line lattice in a large single crystal of untwinned YBa2Cu3O is presented. In fields parallel to the c-axis, diffraction spots are observed corresponding to four orientations of a hexagonal…

The superconducting transition of the ?-pyrochlore oxide KOs2O6 with Tc = 9.60 K is studied by resistivity measurements under various magnetic fields using a high-quality single crystal. The reentrant behavior of superconductivity is…

Superconductivity · Physics 2009-11-11 Zenji Hiroi , Shigeki Yonezawa

The newly discovered iron-based superconductors have stimulated enormous interests in the field of superconductivity. Since the new superconductor is a layered system, the anisotropy is a parameter with the first priority to know. Meanwhile…

Superconductivity · Physics 2008-07-24 Ying Jia , Peng Cheng , Lei Fang , Huiqian Luo , Huan Yang , Cong Ren , Lei Shan , Changzhi Gu , Hai-Hu Wen

Anisotropies of electrical resistivity, upper critical field, London penetration depth and critical currents have been measured in single crystals of the optimally doped iron pnictide superconductor Ba(Fe$_{1-x}$Co$_x$)$_2$As$_2$, $x$=0.074…

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