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The behaviors of resistance, magnetoresistance (up to 5 T), and Hall electromotive force (EMF) with varying temperature (from 10 to 300 K) and measuring current (from 10 mkA to 10 mA) are studied for the Si sample with CrSi2…

Mesoscale and Nanoscale Physics · Physics 2014-10-14 V. V. Andrievskii , Yu. F. Komnik , I. B. Berkutov , I. G. Mirzoiev , N. G. Galkin , D. L. Goroshko

An array of ring resonators specifically designed can perform as a topological insulator. We conduct simulations using both Tight-Binding Model (TBM) and Transfer Matrix Method (TMM) to analyze the transport properties of such optical…

Optics · Physics 2016-09-20 Xiaohui Jiang , Yujie Chen , Chenxuan Yin , Yanfeng Zhang , Hui Chen , Siyuan Yu

Topological insulators have been proposed to be best characterized as bulk magnetoelectric materials that show response functions quantized in terms of fundamental physical constants. Here we lower the chemical potential of…

Mesoscale and Nanoscale Physics · Physics 2016-12-07 Liang Wu , M. Salehi , N. Koirala , J. Moon , S. Oh , N. P. Armitage

Interest in ZrTe5 has been reinvigorated in recent years owing to its potential for hosting versatile topological electronic states and intriguing experimental discoveries. However, the mechanism of many of its unusual transport behaviors…

Mesoscale and Nanoscale Physics · Physics 2023-06-28 Yonghe Liu , Hanqi Pi , Kenji Watanabe , Takashi Taniguchi , Genda Gu , Qiang Li , Hongming Weng , Quansheng Wu , Yongqing Li , Yang Xu

Pb$_{1-x}$Sn$_x$Te has been shown to be an interesting tunable topological crystalline insulator system. We present a magneto-terahertz spectroscopic study of thin films of Pb$_{0.5}$Sn$_{0.5}$Te. The complex Faraday rotation angle and…

Mesoscale and Nanoscale Physics · Physics 2019-04-18 Bing Cheng , P. Taylor , P. Folkes , Charles Rong , N. P. Armitage

Nonlinear electronic transport has emerged as a powerful probe of the quantum geometry in topological quantum materials, where the band topology and broken symmetries facilitate power law current voltage responses beyond Ohms law. While…

This study examines the magnetotransport response observed in flakes of the 3D topological insulator (TI) Bi2Te3, including indium superconducting electrodes, and demonstrates two critical transitions in the magnetoresistive response with…

Mesoscale and Nanoscale Physics · Physics 2016-02-16 Zhuo Wang , Tianyu Ye , R. G. Mani

Following a theoretical proposal on multi-impurity charge Kondo circuits [T. K. T. Nguyen and M. N. Kiselev, Phys. Rev. B {\bf 97}, 085403 (2018)] and the experimental breakthrough in fabrication of the two-site Kondo simulator [W. Pouse…

Strongly Correlated Electrons · Physics 2024-03-22 T. K. T. Nguyen , H. Q. Nguyen , M. N. Kiselev

We report the study of a novel linear magneto-resistance (MR) under perpendicular magnetic fields in Bi2Se3 nanoribbons. Through angular dependence magneto-transport experiments, we show that this linear MR is purely due to two-dimensional…

Mesoscale and Nanoscale Physics · Physics 2015-03-17 Hao Tang , Dong Liang , Richard L. J. Qiu , Xuan P. A. Gao

The current article investigated the band structure in the presence and absence of spin-orbit coupling (SOC), examined the Z2 invariants, and investigated the detailed angle-dependent magneto-transport of up to 10 T (Tesla) and down to 2 K…

Materials Science · Physics 2024-07-10 N. K. Karn , Yogesh Kumar , Geet Awana , V. P. S. Awana

We present the theory of the inplane magnetoresistance in two-dimensional massless Dirac fermion systems including the Zeeman splitting and the electron-electron interaction effect on the Landau level broadening within a random phase…

Mesoscale and Nanoscale Physics · Physics 2010-11-23 Takao Morinari , Takami Tohyama

The $T^2$-scaling of resistivity with temperature is often viewed as a classic hallmark of a Fermi-liquid (FL) behavior in metals. However, if umklapp scattering is suppressed, this scaling is not universally guaranteed to occur. In this…

Strongly Correlated Electrons · Physics 2025-07-16 Tatia Kiliptari , Dmitrii L. Maslov

We explore the temperature dependent magnetoresistance of bulk insulating topological insulator thin films. Thin films of Bi2Se2Te and BiSbTeSe1.6 were grown using Pulsed Laser Deposition technique and subjected to transport measurements.…

Strongly Correlated Electrons · Physics 2017-12-06 Sourabh Singh , R. K. Gopal , Jit Sarkar , Atul Pandey , Bhavesh G. Patel , Chiranjib Mitra

We investigate the conductance properties of a hybrid ferromagnet-semiconductor structure consisting of a confined two-dimensional electron gas and a transverse ferromagnetic strip on top. Within the framework of the Landauer-B\"uttiker…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Michele Governale , Daniel Boese

We investigate an ultra-thin film of topological insulator (TI) multilayer as a model for a three-dimensional (3D) Weyl semimetal. We introduce tunneling parameters $t_S$, $t_\perp$, and $t_D$, where the former two parameters couple layers…

Strongly Correlated Electrons · Physics 2016-05-10 S. A. Owerre

Graphene grown epitaxially on SiC, close to the charge neutrality point (CNP), in an orthogonal magnetic field shows an ambipolar behavior of the transverse resistance accompanied by a puzzling longitudinal magnetoresistance. When injecting…

Mesoscale and Nanoscale Physics · Physics 2019-05-22 A. Tagliacozzo , G. Campagnano , D. Giuliano , P. Lucignano , B. Jouault

In the last six years, Indium selenide (InSe) has appeared as a new van der Waals heterostructure platform which has been extensively studied due to its unique electronic and optical properties. Such as transition metal dichalcogenides…

We discuss the magnetic and topological properties of bulk crystals and quasi-two-dimensional thin films formed by stacking intrinsic magnetized topological insulator ( for example Mn(Sb$_{x}$Bi$_{1-x}$)$_2$X$_4$ with X = Se,Te, including…

Mesoscale and Nanoscale Physics · Physics 2020-11-04 Chao Lei , Shu Chen , Allan H. MacDonald

In the commented work (PRL 109, 187005 (2012)), Rullier-Albenque et al. present measurements of transverse magnetoresistivity above the transition temperature Tc in clean LiFeAs. By analyzing their data, these authors conclude that the…

Superconductivity · Physics 2015-09-25 A. Ramos-Álvarez , J. Mosqueira , F. Vidal

Having the chiral anomaly induced magneto-transport phenomena extensively studied in single Weyl semimetal (WSM) as characterized by topological charge $n=1$, we here address the transport properties in the context of multi-Weyl semimetals…

Mesoscale and Nanoscale Physics · Physics 2020-12-01 Tanay Nag , Snehasish Nandy