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We report low-temperature de Haas-van Alphen (dHvA) effect measurements in magnetic fields up to 35 T of the heavy-fermion superconductor Ce$_2$PdIn$_8$. The comparison of the experimental results with band-structure calculations implies…

Strongly Correlated Electrons · Physics 2015-09-23 K. Götze , J. Klotz , D. Gnida , H. Harima , D. Aoki , A. Demuer , S. Elgazzar , J. Wosnitza , D. Kaczorowski , I. Sheikin

Topological insulators are characterized by an inverted band structure in the bulk and metallic surface states on the surface. In LaBi, a semimetal with a band inversion equivalent to a topological insulator, we observe surface state like…

The resistance of a metal in a magnetic field can be very illuminating about its ground state. Some famous examples include the integer and fractional quantum Hall effects\cite{Klitzing-QHE,Tsui-FQHE}, Shubnikov-de Haas…

Strongly Correlated Electrons · Physics 2016-06-08 Yongkang Luo , R. D. McDonald , P. F. S. Rosa , B. Scott , N. Wakeham , N. J. Ghimire , E. D. Bauer , J. D. Thompson , F. Ronning

In the present study, we have discussed the up-turn behavior in the resistivity pattern of the topological nodal line semimetal InBi. We argued that such nature could be generalized with a mathematical model, that can be applied to any…

SmB6 is a candidate topological Kondo insulator that displays surface conduction at low temperatures. Here, we perform torque magnetization measurements as a means to detect de Haas-van Alphen (dHvA) oscillations in SmB6 crystals grown by…

Strongly Correlated Electrons · Physics 2019-05-01 S. M. Thomas , Xiaxin Ding , F. Ronning , V. Zapf , J. D. Thompson , Z. Fisk , J. Xia , P. F. S. Rosa

Transition metal dipnictides (TMDs) have recently been identified as possible candidates to host topology protected electronic band structure. These materials belong to an isostructural family and show several exotic transport properties.…

Materials Science · Physics 2018-04-18 Ratnadwip Singha , Arnab Pariari , Prabhat Mandal , Gaurav Kumar Gupta , Tanmoy Das

We report the results of our detailed magnetotransport studies on single crystals of the antiferromagnetic heavy-fermion superconductor Ce$_3$PdIn$_{11}$. Electrical resistivity measurements, carried out in different magnetic field…

Superconductivity · Physics 2019-02-26 Debarchan Das , Daniel Gnida , Dariusz Kaczorowski

EuB$_6$ is a magnetic semiconductor in which defects introduce charge carriers into the conduction band with the Fermi energy varying with temperature and magnetic field. We present experimental and theoretical work on the electronic…

Strongly Correlated Electrons · Physics 2009-11-10 G. A. Wigger , R. Monnier , H. R. Ott , D. P. Young , Z. Fisk

We study magnetotransport in a rare earth doped topological insulator, Sm0.1Sb1.9Te3 single crystals, under magnetic fields up to 14 T. It is found that that the crystals exhibit Shubnikov de Haas oscillations in their magneto-transport…

Materials Science · Physics 2019-07-11 Zengji Yue , Weiyao Zhao , David Cortie , Zhi Li , Guangsai Yang , Xiaolin Wang

We investigated the pressure evolution of the electrical transport in the almost compensated Weyl semimetal TaP. In addition, we obtained information on the modifications of the Fermi-surface topology with pressure from the analysis of…

Materials Science · Physics 2019-04-12 M. Besser , R. D. dos Reis , F. -R. Fan , M. O. Ajeesh , Y. Sun , M. Schmidt , C. Felser , M. Nicklas

We have investigated the magnetoresistance (MR) and Hall resistivity properties of the single crystals of tantalum sulfide, Ta3S2, which was recently predicted to be a new type II Weyl semimetal. Large MR (up to ~8000% at 2 K and 16 T),…

Materials Science · Physics 2016-11-11 D. Chen , L. X. Zhao , J. B. He , H. Liang , S. Zhang , C. H. Li , L. Shan , C. Ren , S. C. Wang , Z. A. Ren , G. F. Chen

We report the discovery of giant and anisotropic magnetoresistance due to the orbital rearrangement in a non-magnetic correlated metal. In particular, we measured the magnetoresistance under fields up to 31.4 T in the cubic Pr-based heavy…

We report on a comprehensive de Haas--van Alphen (dHvA) study of the iron pnictide LaFe$_2$P$_2$. Our extensive density-functional band-structure calculations can well explain the measured angular-dependent dHvA frequencies. As salient…

The magnetic-field, temperature, and angular dependence of the interlayer magnetoresistance of two different quasi-two-dimensional (2D) organic superconductors is reported. For $\kappa$-(BEDT-TTF)$_2$I$_3$ we find a well-resolved peak in…

Strongly Correlated Electrons · Physics 2009-11-07 J. Wosnitza , J. Hagel , J. S. Qualls , J. S. Brooks , E. Balthes , D. Schweitzer , J. A. Schlueter , U. Geiser , J. Mohtasham , R. W. Winter , G. L. Gard

High-pressure magnetization, structural and 57Fe M\"ossbauer studies were performed on superconducting Rb0.8Fe1.6Se2.0 with Tc = 32.4 K. The superconducting transition temperature gradually decreases on increasing pressure up to 5.0 GPa…

We report the magnetization, electrical resistivity, specific heat measurements and band structure calculations of layered superconductor SnTaS$_2$. The experiments are performed on single crystals grown by chemical vapor transport method.…

The iron-based LaFeAsO$_{1-x}$F$_x$ recently discovered by Hosono's group is a fresh theoretical challenge as a new class of high-temperature superconductors. Here we describe the electronic structure of the material and the mechanism of…

Superconductivity · Physics 2009-11-13 Hideo Aoki

Weyl semimetals, characterized by nodal points in the bulk and Fermi arc states on the surface, have recently attracted extensive attention due to the potential application on low energy consumption electronic materials. In this report, the…

Strongly Correlated Electrons · Physics 2019-07-08 W. Zhou , B. Li , C. Q. Xu , M. R. van Delft , Y. G. Chen , X. C. Fan , B. Qian , N. E. Hussey , Xiaofeng Xu

We report the discovery of superconductivity in the ternary aluminide Nb$_{5}$Sn$_{2}$Al, which crystallizes in the W$_{5}$Si$_{3}$-type structure with one-dimensional Nb chains along the $c$-axis. It is found that the compound has a…

Superconductivity · Physics 2019-02-12 Jifeng Wu , Bin Liu , Yanwei Cui , Hangdong Wang , Zhicheng Wang , Zhi Ren , Guanghan Cao

Transport properties of the complex oxide LaAlO3/SrTiO3 interface are investigated under high magnetic field (55T). By rotating the sample with respect to the magnetic field, the two-dimensional nature of charge transport is clearly…