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In-plane longitudinal and transverse thermoelectric phenomena in two parent compounds of iron-based superconductors are studied. Namely, the Seebeck (S) and Nernst (n) coefficients were measured in the temperature range 10 - 300 K for…

Superconductivity · Physics 2018-03-21 Marcin Matusiak , Michal Babij , Thomas Wolf

Spin fluctuations are considered to be one of the candidates that drive a sign-reversed s^{\pm} superconducting state in the iron pnictides. In the magnetic scenario, whether the spin fluctuation spectrum exhibits certain unique fine…

Superconductivity · Physics 2010-10-25 Junhua Zhang , Rastko Sknepnek , Jörg Schmalian

The concept of an electronically-driven breaking of the rotational symmetry of a crystal, without involving magnetic order, has found experimental support in several systems, from semiconductor heterostructures and ruthenates, to cuprate…

In this work, the dynamics of a self-propelled stochastic particle under the influence of an axisymmetric light field was experimentally studied. The particle under consideration has the main characteristic of carrying a light sensor in an…

Other Condensed Matter · Physics 2022-08-17 GA Patterson

The missing hole packets near the Brillouin zone center render unique electronic structures to the heavily electron doped FeSe-based superconductors with Tc above 40 K. It challenges the existing scenario accounting for the nature of…

Superconductivity · Physics 2017-08-16 Shanshan Sun , Shaohua Wang , Rong Yu , Hechang Lei

We investigate the manifestation of the stripes in the in-plane resistivity anisotropy in untwinned single crystals of La_{2-x}Sr_{x}CuO_{4} (x = 0.02 - 0.04) and YBa_{2}Cu_{3}O_{y} (y = 6.35 - 7.0). It is found that both systems show…

Superconductivity · Physics 2009-11-07 Yoichi Ando , Kouji Segawa , Seiki Komiya , A. N. Lavrov

The transport and superconducting properties of Ba_{1-x}K_xFe_2As_2 single crystals with T_c = 31 K were studied. Both in-plane and out-of plane resistivity was measured by modified Montgomery method. The in-plane resistivity for all…

Superconductivity · Physics 2015-05-13 V. N. Zverev , A. V. Korobenko , G. L. Sun , D. L. Sun , C. T. Lin , A. V. Boris

SmCrO$_3$ single crystals were successfully grown utilizing the high-pressure optical floating-zone method and their crystal structure, magnetization behavior, and magnetic phase diagrams were thoroughly investigated. Magnetic studies were…

Strongly Correlated Electrons · Physics 2025-06-05 Ning Yuan , Erik Walendy , Nour Maraytta , Waldemar Hergett , Luca Bischof , Michael Merz , Rüdiger Klingeler

The Fermi-surfaces and Elliott-Yafet spin-mixing parameter (EYP) of several elemental metals are studied by \emph{ab initio} calculations. We focus first on the anisotropy of the EYP as a function of the direction of the spin-quantization…

A number of recent experiments exhibit electronic anisotropy in the iron pnictides, and there is a growing body of experimental evidence that its origin is related to orbital ordering in Fe d_{xz} and d_{yz} orbitals. We examine this…

Strongly Correlated Electrons · Physics 2011-04-12 Andriy H. Nevidomskyy

Single crystals of LaNiSb$_3$ were grown using the Sn flux method. Structural characterization confirms that LaNiSb$_3$ crystallizes in the orthorhombic $Pbcm$ space group with lattice parameters $a = 13.0970(2)\,\mathrm{\AA}$, $b =…

Materials Science · Physics 2026-03-24 Haribrahma Singh , Aarti Gautam , Prabuddha Kant Mishra , Rie Y. Umetsu , Ashok Kumar Ganguli

This study investigates the anomalous orbital effects in iron (Fe) films with strong uniaxial anisotropy, highlighting the interactions between spin and orbital currents. Using heterogeneous YIG/Fe and YIG/Pt/Fe structures, fabricated by…

Mesoscale and Nanoscale Physics · Physics 2026-03-26 E. Santos , U. Borges , J. L. Costa , J. B. S. Mendes , A. Azevedo

We report the discovery of a giant out-of-plane coercivity in the Fe-doped Mn3Sn single crystals. The compound of Mn2.42Fe0.58Sn exhibits a series of magnetic transitions accompanying with large magnetic anisotropy and electric transport…

Applied Physics · Physics 2023-10-31 Weihao Shen , Yalei Huang , Xinyu Yao , Fangyi Qi , Guixin Cao

We report on study of electrical and structural properties of InSb/GaAs(001) heteroepitaxial layers in [110] and [1-10] crystallographic directions. Strong anisotropy of electron transport parameters measured at a low magnetic field has…

We report that intrinsic transport and magnetic properties, and their anisotropy from high quality single crystal $CaFe_2As_2$. The resistivity anisotropy ($\rho_c/\rho_{ab}$) is $\sim 50 $, and less than 150 of $BaFe_2As_2$, which arises…

Superconductivity · Physics 2009-11-13 G. Wu , H. Chen , T. Wu , Y. L. Xie , Y. J. Yan , R. H. Liu , X. F. Wang , J. J. Ying , X. H. Chen

In intercalated transition metal dichalcogenide $Fe_xTaS_2$ (0.2 $\leq$ x $\leq$ 0.4) single crystals, large magnetic anisotropy is observed. Transport property measurements indicate that heavy Fe-doping leads to a large anisotropy of…

Strongly Correlated Electrons · Physics 2017-05-10 G. Wu , B. L. Kang , Y. L. Li , T. Wu , N. Z. Wang , X. G. Luo , Z. Sun , L. J. Zou , X. H. Chen

Anisotropic spherically symmetric solutions within the framework of the Brans-Dicke theory are uncovered through a unique gravitational decoupling approach involving a minimal geometric transformation. This transformation effectively…

General Relativity and Quantum Cosmology · Physics 2023-11-01 Kazuharu Bamba , M. Z. Bhatti , Z. Yousaf , Z. Shoukat

We present a study of the anisotropy in the superconducting energy gap in a single crystal of YNi2B2C (Tc~14.6K) using directional point contact spectroscopy. The superconducting energy gap at 2.7K, when measured for I||c, is 4.5 times…

Superconductivity · Physics 2007-05-23 P. Raychaudhuri , D. Jaiswal-Nagar , Goutam Sheet , S. Ramakrishnan , H. Takeya

The metallic state of high temperature cuprate superconductors is markedly different from that of textbook metals. The origin of this unconventional state, characterized by unusual and distinct temperature dependences in the transport…

Spin relaxation can be greatly enhanced in narrow channels of two-dimensional electron gas due to ballistic spin resonance, which is mediated by spin-orbit interaction for trajectories that bounce rapidly between channel walls. The channel…

Mesoscale and Nanoscale Physics · Physics 2010-09-30 W. W. Yu , S. M. Frolov , S. Luescher , J. A. Folk , W. Wegscheider