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CaFeAsF is an iron-based superconductor parent compound whose Fermi surface is quasi-two dimensional, composed of Dirac-electron and Schr\"odinger-hole cylinders elongated along the $c$ axis. We measured the longitudinal and Hall…

Indium-doped SnTe has been of interest because the system can exhibit both topological surface states and bulk superconductivity. While the enhancement of the superconducting transition temperature is established, the character of the…

Superconductivity · Physics 2018-08-13 Cheng Zhang , Xu-Gang He , Hang Chi , Ruidan Zhong , Wei Ku , Genda Gu , J. M. Tranquada , Qiang Li

The noncentrosymmetric Half Heusler compound YPtBi exhibits superconductivity below a critical temperature T_c = 0.77 K with a zero-temperature upper critical field H_c2(0) = 1.5 T. Magnetoresistance and Hall measurements support…

Superconductivity · Physics 2011-12-22 Nicholas P. Butch , P. Syers , Kevin Kirshenbaum , Andrew P. Hope , Johnpierre Paglione

The spin-dependent electron transport has been studied in magnetic semiconductor waveguides (nanowires) in the helical magnetic field. We have shown that -- apart from the known conductance dip located at the magnetic field equal to the…

Mesoscale and Nanoscale Physics · Physics 2015-05-22 P. Wojcik , J. Adamowski , M. Woloszyn , B. J. Spisak

We have investigated the nonreciprocal electrical transport, that is a nonlinear resistance effect depending on the current direction, in multiferroic Rashba semiconductor (Ge,Mn)Te. Due to coexistence of ferromagnetic and ferroelectric…

The magnetic properties of the van der Waals magnetic topological insulators MnBi$_2$Te$_4$ and MnBi$_4$Te$_7$ are investigated by magneto-transport measurements. We evidence that the relative strength of the inter-layer exchange coupling J…

Because of their complex Fermi surfaces, the identification of the physical phenomena contributing to electronic scattering in the Fe-based superconductors is a difficult task. Here, we report on the electrical resistivity,…

Study of magnetotransport properties of ScPtBi revealed simultaneously: a negative contribution to the longitudinal magnetoresistance, the planar Hall effect, and distinct angular narrowing of the longitudinal magnetoresistance { three…

Materials Science · Physics 2021-05-19 Orest Pavlosiuk , Andrzej Jezierski , Dariusz Kaczorowski , Piotr Wiśniewski

We perform a detailed analysis of the magnetotransport and de Haas-van Alphen (dHvA) oscillations in crystal PdGa which is predicted to be a typical chiral Fermion semimetal from CoSi family holding a large Chern number. The unsaturated…

Experimental and theoretical studies on transport in semiconductor samples with superconducting electrodes are reported. We focus on the samples close to metal-insulator transition. In metallic samples, a peak of negative magnetoresistance…

Disordered Systems and Neural Networks · Physics 2009-11-10 N. V. Agrinskaya , V. I. Kozub , A. V. Chernyaev , D. V. Shamshur , A. A. Zuzin

A topological insulator (TI) nanowire (NW), where the core is insulating and the 2D spin-helical Dirac fermion topological surface states (TSS) are circumferentially quantized into a series of 1D sub-bands, promises novel topological…

Mesoscale and Nanoscale Physics · Physics 2017-06-22 Luis A. Jauregui , Michael T. Pettes , Leonid P. Rokhinson , Li Shi , Yong P. Chen

We present different transport measurements up to fields of 29~T in the recently discovered heavy-fermion superconductor UTe$_{2}$ with magnetic field $H$ applied along the easy magnetization a-axis of the body-centered orthorhombic…

Since the discovery of superconductivity in LaFePO in 2006, numerous iron-based superconductors have been identified within diverse structure families, all of which combine iron with a group-V (pnictogen) or group-VI (chalco- gen) element.…

Strongly Correlated Electrons · Physics 2016-03-30 Jiasheng Chen , Konstantin Semeniuk , Zhuo Feng , Pascal Reiss , Yang Zou , Peter W. Logg , Giulio I. Lampronti , F. Malte Grosche

The angle-dependent interlayer magnetoresistance of overdoped Tl$_2$Ba$_2$CuO$_{6+\delta}$ has been measured in high magnetic fields up to 45 Tesla. A conventional Boltzmann transport analysis with no basal-plane anisotropy in the cyclotron…

Superconductivity · Physics 2009-11-13 J. G. Analytis , M. Abdel-Jawad , L. Balicas , M. M. J. French , N. E. Hussey

While recent experiments confirm the existence of hundreds of topological electronic materials, only a few exhibit the coexistence of superconductivity and a topological electronic state. These compounds attract significant attention in…

The study of topology protected electronic properties is a fascinating topic in present day condensed matter physics research. New topological materials are frequently being proposed and explored through various experimental techniques.…

Materials Science · Physics 2021-06-30 Shubhankar Roy , Ratnadwip Singha , Arup Ghosh , Prabhat Mandal

The orthorhombic uranium dichalcogenide UTe$_2$ displays superconductivity below 1.7 K, with the anomalous feature of retaining 50$\%$ of normal state (ungapped) carriers, according to heat capacity data from two groups. Incoherent…

Superconductivity · Physics 2019-10-09 Alexander B. Shick , Warren E. Pickett

We show that Shubnikov-de Haas oscillations in the interlayer resistivity of the organic superconductor $\beta''$-(BEDT-TTF)$_{2}$SF$_{5}$ CH$_{2}$CF$_{2}$SO$_{3}$ become very pronounced in magnetic fields $\sim$~60~T. The conductivity…

Strongly Correlated Electrons · Physics 2009-11-07 M. -S. Nam , A. Ardavan , J. A. Symington , J. Singleton , N. Harrison , C. H. Mielke , J. A. Schlueter , R. W. Winter , G. L. Gard

We study the magnetotransport properties of a two-dimensional electronic system with unconventional Rashba spin-orbit coupling in which the system is described by a pair of chiral spin texture in each spin branch, and the chirality is…

Mesoscale and Nanoscale Physics · Physics 2026-03-24 Aryan Pandita , SK Firoz Islam

The electronic structure of WTe$_2$ and orthorhombic $\gamma-$MoTe$_2$, are claimed to contain pairs of Weyl type-II points. A series of ARPES experiments claim a broad agreement with these predictions. We synthesized single-crystals of…