Extremely large magnetoresistance and high-density Dirac-like fermions in ZrB2

Abstract

We report the detailed study on transport properties of ZrB2 single crystal, a predicted topological nodal-line semimetal. ZrB2 exhibits extremely large magnetoresistance as well as field-induced resistivity upturn and plateau. These behaviors can be well understood by the two-band model with the perfect electron - hole compensation and high carrier mobilities. More importantly, the electrons with small effective masses and nontrivial Berry phase have significantly high density when compared to those in known topological semimetals. It strongly suggests that ZrB2 hosts Dirac-like nodal-line fermions.

6 pages, 4 figures

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Cited by in corpus (8)

• Electronic Transport and quantum oscillation of Topological Semimetals
• Experimental observation of bulk nodal lines and electronic surface states in ZrB${}_2$
• Magnetoresistance of semi-metals: the case of antimony
• Pressure effect on the topologically nontrivial electronic state and transport of lutecium monobismuthide
• Crossing points of nodal lines in topological semimetals and Fermi surface of ZrSiS
• Materials and possible mechanisms of extremely large magnetoresistance: A review
• Emergence of Double-Dome Superconductivity in the Pressurized Dirac Semimetal BaMg2Bi2
• Magnetic susceptibility of crystals with crossing of their band-contact lines