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Layered systems shows anisotropic transport properties. The interlayer conductivity show a general temperature dependence for a wide class of materials. This can be understood if conduction occurs in two different channels activated at…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Urban Lundin , Ross H. McKenzie

We show that the interference between scattering by impurities and by critical spin fluctuations gives rise to anisotropic transport in the Ising-nematic state of the iron pnictides. The effect is closely related to the non-Fermi liquid…

Strongly Correlated Electrons · Physics 2015-05-28 Rafael M. Fernandes , Elihu Abrahams , Jörg Schmalian

An ordered phase showing remarkable electronic anisotropy in proximity to the superconducting phase is now a hot issue in the field of high-transition-temperature superconductivity. As in the case of copper oxides, superconductivity in iron…

Strongly Correlated Electrons · Physics 2011-07-27 M. Nakajima , T. Liang , S. Ishida , Y. Tomioka , K. Kihou , C. H. Lee , A. Iyo , H. Eisaki , T. Kakeshita , T. Ito , S. Uchida

Lattice strains of appropriate symmetry have served as an excellent tool to explore the interaction of superconductivity in the iron-based superconductors with nematic and stripe spin-density wave (SSDW) order, which are both closely tied…

EuCd2As2 was theoretically predicted to be a minimal model of Weyl semimetals with a single pair of Weyl points in the ferromagnet state. However, the heavily p-doped EuCd2As2 crystals in previous experiments prevent direct identification…

Mesoscale and Nanoscale Physics · Physics 2024-03-08 Yuxiang Wang , Jianwen Ma , Jian Yuan , Wenbin Wu , Yong Zhang , Yicheng Mou , Jiaming Gu , Peihong Cheng , Wu Shi , Xiang Yuan , Jinglei Zhang , Yanfeng Guo , Cheng Zhang

Early work on the iron-arsenide compounds supported the view, that a reduced dimensionality might be a necessary prerequisite for high-Tc superconductivity. Later, however, it was found that the zero-temperature upper critical magnetic…

Superconductivity · Physics 2015-05-20 V. A. Gasparov , F. Wolff-Fabris , D. L. Sun , C. T. Lin , J. Wosnitza

The unsymmetric confinement of the electrons in a typical 2-dimensional electron gas (2DEG) breaks the full cubic symmetry of the in-plane transport properties. A rigorous invariance of the transport under rotation by pi/2 about the cubic…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Herbert Kroemer

We present detailed electronic structure calculations for CaFe2As2. We investigate in particular the `collapsed' tetragonal and orthorhombic regions of the temperature-pressure phase diagram and find properties that distinguish CaFe2As2…

Strongly Correlated Electrons · Physics 2009-03-27 D. A. Tompsett , G. G. Lonzarich

The newly discovered 112-type ferropnictide superconductors contain chains of As atoms that break the tetragonal symmetry between the $a$ and $b$ axes. This feature eliminates the need for uniaxial strain that is usually required to…

Strongly Correlated Electrons · Physics 2016-03-23 J. W. Harter , H. Chu , S. Jiang , N. Ni , D. Hsieh

The crystal structure of the layered iron arsenide Sr3Sc2O5Fe2As2 was determined between 300 and 10 K. The lattice parameters of the tetragonal cell decrease anisotropically according to delta(c)/c : delta(a)/a = 4.2, which results in a…

Superconductivity · Physics 2009-11-08 Marcus Tegel , Inga Schellenberg , Franziska Hummel , Rainer Poettgen , Dirk Johrendt

Crystallographic, electronic transport, thermal and magnetic properties are reported for SrMn2As2 and CaMn2As2 single crystals grown using Sn flux. Rietveld refinements of powder x-ray diffraction data show that the two compounds are…

Strongly Correlated Electrons · Physics 2016-12-13 N. S. Sangeetha , Abhishek Pandey , Zackery A. Benson , D. C. Johnston

The electrical resistance of the two-dimensional electron system (2DES) which forms at the interface of SrTiO3 (STO)-based heterostructures displays anisotropic transport with respect to the direction of current flow at low temperature. We…

Materials Science · Physics 2020-08-31 Karsten Wolff , Roland Schäfer , Daniel Arnold , Rudolf Schneider , Matthieu Le Tacon , Dirk Fuchs

Recent work by Chernodub and Ilgenfritz has uncovered non-trivial temperature dependence in the electric-magnetic asymmetry in the dimension 2 condensate. This asymmetry measures the difference between the spatial and the temporal…

High Energy Physics - Theory · Physics 2010-11-17 David Vercauteren , David Dudal , John Gracey , Nele Vandersickel , Henri Verschelde

The pursuit to operate photocathodes at high accelerating gradients to increase brightness of electron beams is gaining interests within the accelerator community. Cesium telluride (Cs2Te) is a widely used photocathode material and it is…

Cr2Ge2Te6 has been of interest for decades, as it is one of only a few naturally forming ferromagnetic semiconductors. Recently, this material has been revisited due to its potential as a 2 dimensional semiconducting ferromagnet and a…

Materials Science · Physics 2016-05-02 Yao Tian , Mason J. Gray , Huiwen Ji , R. J. Cava , Kenneth S. Burch

Thermoelectric transport across normal-metal/helical-multiferroic/ferromagnetic heterojunctions is theoretically investigated. We find a anisotropic charge and spin thermopower with a $C_{2v}$ symmetry. The angular dependence on the…

Mesoscale and Nanoscale Physics · Physics 2015-05-28 Chenglong Jia , Jamal Berakdar

We report measurements of the resistance of silicon MOSFETs as a function of temperature in high parallel magnetic fields where the 2D system of electrons has been shown to be fully spin-polarized. A magnetic field suppresses the metallic…

Strongly Correlated Electrons · Physics 2009-10-31 K. M. Mertes , Hairong Zheng , S. A. Vitkalov , M. P. Sarachik , T. M. Klapwijk

This work investigates the magneto-transport properties of exfoliated NiTe2 nano-flakes with varying thicknesses and disorder levels, unveiling two distinct physical mechanisms governing the observed anisotropic linear magnetoresistance…

Mesoscale and Nanoscale Physics · Physics 2025-12-09 Ding Bang Zhou , Kuang Hong Gao , Tie Lin , Yang Yang , Meng Fan Zhao , Zhi Yan Jia , Xiao Xia Hu , Qian Jin Guo , Zhi Qing Li

We show anti-crossings due to strong in-plane coupling of plasmon modes in dielectric-metal-dielectric structure with top 2D dielectric pattern. Experimentally measured anti-crossing widths are compared with those calculated by coupled mode…

Other Condensed Matter · Physics 2013-05-28 Sachin Kasture , Prasanta Mandal , S. Dutta Gupta , Venu Gopal Achanta

We instigate the angle-dependent magnetoresistance (AMR) of the layered nodal-line Dirac semimetal ZrSiS for the in-plane and out-of-plane current directions. This material has recently revealed an intriguing butterfly-shaped in-plane AMR…