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Topological semimetals characterize a novel class of quantum materials hosting Dirac/Weyl fermions. The important features of topological fermions can be exhibited by quantum oscillations. Here we report the magnetoresistance and…

The layered ternary compound TaIrTe$_4$ has been predicted to be a type-II Weyl semimetal with only four Weyl points just above the Fermi energy. Performing magnetotransport measurements on this material we find that the resistivity does…

While the pure elements tend to exhibit Type-I rather than Type-II superconductivity, nearly all compound superconductors are Type-II, with only a few known exceptions. We report single crystal growth and physical characterization of the…

Superconductivity · Physics 2019-04-23 Darren C. Peets , Erjian Cheng , Tianping Ying , Markus Kriener , Xiaoping Shen , Shiyan Li , Donglai Feng

We report a detailed magnetotransport study on single crystals of PrBi. The presence of $f$-electrons in this material raises the prospect of realizing a strongly correlated version of topological semimetals. PrBi shows a magnetic field…

Strongly Correlated Electrons · Physics 2019-07-09 Amit Vashist , R. K. Gopal , Divya Srivastava , M. Karppinen , Yogesh Singh

Pd$_3$Bi$_2$Se$_2$ is a rare realization of a superconducting metal with a non-zero $Z_2$ topological invariant. We report the growth of high-quality single crystals of layered Pd$_3$Bi$_2$Se$_2$ with a superconducting transition at $T_c$ ~…

Strongly Correlated Electrons · Physics 2024-10-22 Ramakanta Chapai , Gordon Peterson , M. P. Smylie , Xinglong Chen , J. S. Jiang , David Graf , J. F. Mitchell , Ulrich Welp

The quest for quantum materials with diverse symmetry-protected topological states has been the focus of recent research interest, primarily due to their fascinating physical properties and the potential technological utility. In this work,…

We present a comprehensive first-principles study of the magnetoresistance in ZrSi$X$ ($X=$ S, Se, Te) topological nodal-line semimetals. Our study demonstrates that all primary features of the experimentally measured magnetoresistance in…

Materials Science · Physics 2025-10-31 ShengNan Zhang , Oleg V. Yazyev

TaSb$_{2}$ has been predicted theoretically and proposed through magnetotransport experiment to be a topological semimetal. In earlier reports, the Shubnikov-de Haas oscillation has been analyzed to probe the Fermi surface, with magnetic…

Materials Science · Physics 2018-07-17 Arnab Pariari , Ratnadwip Singha , Shubhankar Roy , Biswarup Satpati , Prabhat Mandal

We theoretically study the band structure and the electronic transport in the Weyl semimetal nanowires in magnetic fields, and demonstrate that the interplay of the Fermi-arc surface states and the bulk Landau levels plays a crucial role in…

Mesoscale and Nanoscale Physics · Physics 2017-05-24 Akira Igarashi , Mikito Koshino

We report the magneto-transport properties of CaAl$_4$ single crystals with $C2/m$ structure at low temperature. CaAl$_4$ exhibits large unsaturated magnetoresistance $\sim$3000$\%$ at 2.5 K and 14 T. The nonlinear Hall resistivity is…

Materials Science · Physics 2019-04-02 Sheng Xu , Jian-Feng Zhang , Yi-Yan Wang , Lin-Lin Sun , Huan Wang , Yuan Su , Xiao-Yan Wang , Kai Liu , Tian-Long Xia

We report on a magneto-transport and quantum oscillations study on high quality single crystals of the transition metal di-tellurides PtTe$_2$ and PdTe$_2$. The de Haas-van Alphen (dHvA) oscillations in the magnetization measurements on…

Materials Science · Physics 2018-11-21 Amit , R. K. Singh , Neha Wadhera , S. Chakraverty , Yogesh Singh

Materials featuring hypervalent bismuth motifs have generated immense interest due to their extraordinary electronic structure and exotic quantum transport. In this study, we synthesized high-quality single crystals of La3ScBi5…

Multiple-band electronic structure and proximity to antiferromagnetic (AF) instability are the key properties of iron-based superconductors. We explore the influence of scattering by the AF spin fluctuations on transport of multiple-band…

Strongly Correlated Electrons · Physics 2016-11-03 A. E. Koshelev

In this report, we present the magnetotransport and magnetization properties of LaSbTe single crystals. Magnetic field-induced turn-on behavior and low-temperature resistivity plateau have been observed. By adopting both metal-semiconductor…

Materials Science · Physics 2018-01-30 Ratnadwip Singha , Arnab Pariari , Biswarup Satpati , Prabhat Mandal

Extremely large non-saturating magnetoresistance has recently been reported for a large number of both topologically trivial and non-trivial materials. Different mechanisms have been proposed to explain the observed magnetotransport…

Materials Science · Physics 2019-01-23 Sheng Nan Zhang , Quan Sheng Wu , Yi Liu , Oleg V. Yazyev

We report the results of a study of magnetic field features of electron transport in heterojunctions with NS boundary inside iron-based superconductors, represented by a binary phase of $\alpha$ - FeSe and oxyarsenide pnictide LaO(F)FeAs.…

Superconductivity · Physics 2015-03-16 M. O. Dzyuba , Yu. N. Chiang , D. A. Chareev , A. N. Vasiliev

We perform the quantum magnetotransport measurements and first-principles calculations on high quality single crystals of SmAlSi, a new topological Weyl semimetal candidate. At low temperatures, SmAlSi exhibits large non-saturated…

We report the magnetotransport properties of HoSb, a semimetal with antiferromagnetic ground state. HoSb shows extremely large magnetoresistance (XMR) and Shubnikov-de Haas (SdH) oscillation at low temperature and high magnetic field.…

Materials Science · Physics 2018-08-01 Yi-Yan Wang , Lin-Lin Sun , Sheng Xu , Yuan Su , Tian-Long Xia

We report inter-plane ($R_{zz}$) electrical transport measurements in the \tp series of organic conductors at very high magnetic fields. In the field range between 36 and 60 T $R_{zz}$ shows a very hysteretic first order phase transition…

Strongly Correlated Electrons · Physics 2007-05-23 K. Storr , D. Graf , J. S. Brooks , L. Balicas , C. Mielke , G. C. Papavassiliou

The identification of a non-trivial band topology usually relies on directly probing the protected surface/edge states. But, it is difficult to achieve electronically in narrow-gap topological materials due to the small (meV) energy scales.…

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