Extremely large magnetoresistance in the hourglass Dirac loop chain metal β-ReO${}_2$

Abstract

The transport and thermodynamic properties of $\beta$-ReO${}_2$ crystallizing in a nonsymmorphic structure were studied using high-quality single crystals. An extremely large magnetoresistance (XMR) reaching 22,000 $\%$ in a transverse magnetic field of 10 T at 2 K was observed. However, distinguished from other topological semimetals with low carrier densities that show XMR, $\beta$-ReO${}_2$ has a high electron carrier density of 1 $\times$ $10^{22}$ cm${}^{-3}$ as determined by Hall measurements and large Fermi surfaces in the electronic structure. In addition, a small Fermi surface with a small effective mass was evidenced by de Haas-van Alphen oscillation measurements. The previous band structure calculations [S. S. Wang, et al., Nat. Commun. 8, 1844 (2017)] showed that two kinds of loops made of Dirac points of hourglass-shaped dispersions exist and are connected to each other by a point to form a string of alternating loops, called the Dirac loop chain (DLC), which are protected by the multiple glide symmetries. Our first-principles calculations revealed the complex Fermi surfaces with the smallest one corresponding to the observed small Fermi surface, which is just located near the DLC. The XMR of $\beta$-ReO${}_2$ is attributed to the small Fermi surface and thus is likely caused by the DLC.

9 pages, 7 figures, 1 Table

References in corpus (17)

• Titanic Magnetoresistance in WTe2
• Quantum transport evidence for a three-dimensional Dirac semimetal phase in Cd3As2
• New classes of topological crystalline insulators with unpinned surface Dirac cones
• Metal-Insulator-Like Behavior in Semimetallic Bismuth and Graphite
• The ground state of heavily-overdoped non-superconducting La${}_{2-x}$Sr${}_x$CuO${}_4$
• Z2-topology in nonsymmorphic crystalline insulators: Mobius twist in surface states
• Spin-orbit-entangled electronic phases in 4$d$ and 5$d$ transition-metal compounds
• Tetrahedral Magnetic Order and the Metal-Insulator Transition in the Pyrochlore Lattice of Cd2Os2O7
• Bulk crystal growth and electronic characterization of the 3D Dirac Semimetal Na3Bi
• Detection of multipolar orders in the spin-orbit-entangled 5d Mott insulator Ba2MgReO6
• Successive Symmetry Breaking in a Jeff = 3/2 Quartet in the Spin-Orbit Coupled Insulator Ba2MgReO6
• Pyrochlore Oxide Superconductor Cd2Re2O7 Revisited
• Possible Excitonic Phase of Graphite in the Quantum Limit State
• "Visible" 5d orbital states in a pleochroic oxychloride
• One-dimensionalization by Geometrical Frustration in the Anisotropic Triangular Lattice of the 5d Quantum Antiferromagnet Ca3ReO5Cl2
• Nonintrinsic origin of the magnetic-field-induced metal-insulator and electronic phase transitions in graphite
• Anisotropic Triangular Lattice Realized in Rhenium Oxychlorides A3ReO5Cl2 (A = Ba and Sr)

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