Weak localization and electron-phonon interaction in layered Zintl phase SrIn2P2 single crystal. (13th May 2021)

• Record Type: Journal Article
• Authors: Wang, Huanhuan; Zhu, Xiangde; Chen, Zheng; Lu, Fangjun; Li, Huijie; Han, Yuyan; Li, Liang; Gao, Wenshuai; Ning, Wei; Tian, Mingliang
• Is Part Of: Journal of physics. Volume 33:Number 24(2021)
• Publication Date: 2021-05-13
• Subjects: weak localization -- quantum coherence -- electron–phonon interaction; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/abe96d
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: Recently, the Zintl phase SrIn2 P2 single crystal was proposed to be a topological insulator candidate under lattice strain. Here, we report systematic electrical transport studies on the unstrained layered SrIn2 P2 single crystals. The resistance presents a minimum value around T c = 136 K and then increases remarkably at low temperature. Distinct negative magnetoresistance below T c, combined with the anomalous resistance, implies the carriers are weak localized at low temperature due to strong quantum coherence. Further analysis based on three-dimensional weak localization (WL) model suggests that the electron-phonon interaction dominates the phase decoherence process. Moreover, Hall measurements indicate that the transport properties are mainly dominated by hole-type carriers, and the WL effect is obviously affected by the carrier transport. These findings not only provide us a promising platform for the fundamental physical research but also open up a new route for exploring the potential electronic applications.