Large Linear Magnetoresistance in Dirac Semimetal Cd 3 As 2 with Fermi Surfaces Close to the Dirac Points

By Junya Feng, Y. Pang, Desheng Wu, Zhijun Wang, H. Weng, Jianqi Li, X. Dai, Z. Fang, Youguo Shi, Li Lu. 2014

175 citations recorded by the source corpus.

We have investigated the magnetoresistive behavior of Dirac semi-metal Cd3As2 down to low temperatures and in high magnetic fields. A positive and linear magnetoresistance (LMR) as large as 3100% is observed in a magnetic field of 14 T, on high-quality single crystals of Cd3As2 with ultra-low electron density and large Lande g factor. Such a large LMR occurs when the magnetic field is applied perpendicular to both the current and the (100) surface, and when the temperature is low such that the thermal energy is smaller than the Zeeman splitting energy. Tilting the magnetic field or raising the temperature all degrade the LMR, leading to a less pronounced quadratic behavior. We propose that the phenomenon of LMR is related to the peculiar field-induced shifting/distortion of the helical electrons' Fermi surfaces in momentum space.

Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry, Mathematical Physics

View Paper: https://www.semanticscholar.org/paper/4c10b121e6d815267ac8b60866ad00ce766def60

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In Atomic and Molecular Physics, and Optics

In Materials Chemistry

In Mathematical Physics

Ashvin Vishwanath

Citations in the corpus

Weyl and Dirac semimetals in three-dimensional solids (2017, background): “Akrap et al., 2016 demonstrated linear conductivity over a large energy range in Cd3As2, but this was – as mentioned in Sec.”
Topological Semimetals from First Principles (2018, background): “Due to the nontrivial topology of the bulk and surface electronic states, topological semimetals are expected to exhibit intriguing quantum transport properties, such as unusual magnetoresistance and the chiral anomaly (18, 19, 20, 21, 22), which have attracted broad attention from both theoretical ”
Inhomogeneous Weyl and Dirac Semimetals: Transport in Axial Magnetic Fields and Fermi Arc Surface States from Pseudo-Landau Levels (2016, background): “[66] Junya Feng, Yuan Pang, Desheng Wu, Zhijun Wang,”
Anisotropic Fermi Surface and Quantum Limit Transport in High Mobility Three-Dimensional Dirac Semimetal Cd 3 As 2 (2014, background): “onal (3D) topological Dirac semimetal, a new type of topological materials with a pair of nondegenerate 3D massless Weyl fermions becomes a rapid growing field of research in condensed matter physics [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13]. In analogy to two dimensional Dirac points observed in ”