Magneto-Transport and Shubnikov-de Haas Oscillations in the Type-Ⅱ Weyl Semimetal Candidate NbIrTe4 Flake

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2019,（7）
• 页码范围: 72-76
• 页数: 5页
• 语种: 英文
• DOI: 10.1088/0256-307X/36/7/077101

摘要

We report on magnetoresistance,Hall effect,and quantum Shubnikov-de Haas oscillation (SdH) experiments in NbIrTe4 single crystals,which was recently predicted to be a type-Ⅱ Weyl semimetal.NbIrTe4 manifests a non-saturating and parabolic magnetoresistance at low temperatures.The magneto-transport measurements show that NbIrTe4 is a multiband system.The analysis of the SdH oscillations reveals four distinct oscillation frequencies.Combined with the density-functional theory calculations,we show that they come from two types of Fermi surfaces:electron pocket E1 and hole pocket H2.