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Related papers: Field-angle Resolved Flux-flow Resistivity as a Ph…

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We theoretically investigate the magnetic-field-angle dependence of the flux-flow resistivity $\rho_{\rm f}$ in unconventional superconductors. Two contributions to $\rho_{\rm f}$ are considered: one is the quasiparticle (QP) relaxation…

Superconductivity · Physics 2013-04-11 Yoichi Higashi , Yuki Nagai , Masahiko Machida , Nobuhiko Hayashi

We numerically investigate the effect of in-plane anisotropic Fermi surface (FS) on the flux-flow resistivity $\rho_{\rm f}$ under rotating magnetic field on the basis of the quasiclassical Green's function method. We demonstrate that one…

Superconductivity · Physics 2016-02-02 Yoichi Higashi , Yuki Nagai , Masahiko Machida , Nobuhiko Hayashi

We theoretically study the dependence of the quasiparticle (QP) scattering rate $\varGamma$ on the uniaxial anisotropy of a Fermi surface with changing the magnetic field angle $\alpha_{\rm M}$. We consider the QP scattering due to the…

Superconductivity · Physics 2013-04-11 Yoichi Higashi , Yuki Nagai , Masahiko Machida , Nobuhiko Hayashi

We present a numerical study of the field-angle resolved oscillations of the thermal conductivity and specific heat under rotated magnetic field in the $A_y$Fe$_{2-x}$Se$_2$ [$A$=K,Rb,Cs,(Tl,K)] superconductors, using realistic two-band…

Superconductivity · Physics 2012-11-09 Tanmoy Das , Anton B. Vorontsov , Ilya Vekhter , Matthias J. Graf

Measurements of the nonlinear flux-flow resistivity $\rho$ and the critical vortex velocity $\rm v^*_\phi$ at high voltage bias close to the instability regime predicted by Larkin and Ovchinnikov \cite{LO} are reported along the node and…

Superconductivity · Physics 2009-11-11 B. Kalisky , P. Aronov , G. Koren , A. Shaulov , Y. Yeshurun , R. P. Huebener

We theoretically investigate the quasiparticle scattering rate $\varGamma$ inside a vortex core in the existence of non-magnetic impurities distributed randomly in a superconductor. We show that the dependence of $\varGamma$ on the magnetic…

Superconductivity · Physics 2013-04-11 Yoichi Higashi , Yuki Nagai , Masahiko Machida , Nobuhiko Hayashi

Upper critical field parallel to the conducting layer is studied in anisotropic type-II superconductors on square lattices. We assume enough separation of the adjacent layers, for which the orbital pair-breaking effect is suppressed for…

Superconductivity · Physics 2009-11-07 Hiroshi Shimahara , Kentaro Moriwake

We consider the quasiparticle c-axis conductivity in highly anisotropic layered compounds in the presence of the magnetic field parallel to the layers. We show that at low temperatures the quasiparticle interlayer conductivity depends…

Superconductivity · Physics 2011-04-08 L. N. Bulaevskii , M. J. Graf , M. P. Maley

As a probe to determine the pairing symmetry of quasi-two-dimensional anisotropic superconductors, we propose tunneling spectroscopy in the presence of magnetic field, where the magnetic field is parallel to the two dimensional planes and…

Superconductivity · Physics 2009-11-07 Y. Tanuma , Y. Tanaka , K. Kuroki , S. Kashiwaya

Measurements of the current-voltage characteristics were performed on Ba(Fe$_{1-x}$Co$_x$)$_2$As$_2$ single crystals with doping level $0.044 \leq x \leq 0.1$. An unconventional increase in the flux-flow resistivity $\rho_{\rm ff}$ with…

Superconductivity · Physics 2017-05-31 Xinyi Huang , D. J. Haney , Y. P. Singh , T. Hu , H. Xiao , Hai-Hu Wen , M. Dzero , Carmen. C. Almasan

By solving the Boltzmann transport equation we investigate theoretically the general form of oscillations in the resistivity caused by varying the direction of an applied magnetic field for the case of quasi-two dimensional systems on…

Mesoscale and Nanoscale Physics · Physics 2016-06-06 Joseph C. A. Prentice , Amalia I. Coldea

We studied the temperature and magnetic field dependence of vortex dissipation and critical current in the mixed-state of unconventional superconducting alloys Ba(Fe$_{1-x}$Co$_x$)$_2$As$_2$ ($0.044 \leq x \leq 0.100$) through…

Superconductivity · Physics 2017-09-20 Xinyi Huang , Y. P. Singh , D. J. Haney , T. Hu , H. Xiao , Hai-Hu Wen , Shuai Zhang , M. Dzero , Carmen C. Almasan

The superconducting gap is the fundamental parameter that characterizes the superconducting state, and its symmetry is a direct consequence of the mechanism responsible for Cooper pairing. Here we discuss about angle-resolved photoemission…

Superconductivity · Physics 2013-02-22 Y. -B. Huang , P. Richard , X. -P. Wang , T. Qian , H. Ding

We have investigated the electrical resistivity of the heavy fermion superconductor PrOs$_{4}$Sb$_{12}$ in the mixed state. We found unusual double minima in the flux-flow resistivity as a function of magnetic field below the upper critical…

Strongly Correlated Electrons · Physics 2009-09-29 M. Kobayashi , H. Sato , H. Sugawara , H. Fujiwara , Y. Aoki

We investigate the phase relationship between the oscillating (rf) excitation field and the detected (light) power modulation in scalar rf-driven optically pumped magnetometers (OPMs), in particular in the $M_x$ configuration. While the…

Atomic Physics · Physics 2026-01-22 Zoran D. Grujić , Marija Ćurĉić , Aleksandra Kocić , Antoine Weis , Theo Scholtes

Many of the most interesting and technologically important electronic materials discovered in the past two decades have two common features: a layered crystal structure and strong interactions between electrons. Two of the most fundamental…

Strongly Correlated Electrons · Physics 2009-11-11 Malcolm P. Kennett , Ross H. McKenzie

Magnetic field dependences of critical current, resistance, and rectified voltage of asymmetric (half circles of different widths) and symmetrical (half circles of equal widths) aluminum rings were measured in the temperature region close…

Superconductivity · Physics 2010-11-30 V. L. Gurtovoi , S. V. Dubonos , S. V. Karpii , A. V. Nikulov , V. A. Tulin

We calculate the flux-flow resistivity of the Josephson vortex lattice in a layered superconductor taking into account both the inter-plane and in-plane dissipation channels. We consider the limiting cases of small fields (isolated…

Superconductivity · Physics 2009-10-31 A. E. Koshelev

We discuss three different scenarios recently proposed to account for the non-Fermi liquid behavior near antiferromagnetic (AFM) quantum critical points in heavy-Fermion systems: (i) scattering of Fermi liquid quasiparticles by strong spin…

Strongly Correlated Electrons · Physics 2009-10-31 A. Rosch

The electrical resistivity for a current moving perpendicular to layers (chains) in quasi-2D (quasi-1D) metals under an applied magnetic field of varying orientation is studied using Boltzmann transport theory. We consider the simplest…

Statistical Mechanics · Physics 2009-11-13 M. F. Smith , Ross McKenzie
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