CoTe2 A Quantum Critical Dirac Metal with Strong Spin Fluctuations

CoTe2 : A Quantum Critical Dirac Metal with Strong Spin Fluctuations

© 2023 The Authors. Advanced Materials published by Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 35(2023), 21 vom: 03. Mai, Seite e2300640
1. Verfasser: Siegfried, Peter E (VerfasserIn)
Weitere Verfasser: Bhandari, Hari, Qi, Jeanie, Ghimire, Rojila, Joshi, Jayadeep, Messegee, Zachary T, Beeson, Willie B, Liu, Kai, Ghimire, Madhav Prasad, Dang, Yanliu, Zhang, Huairuo, Davydov, Albert V, Tan, Xiaoyan, Vora, Patrick M, Mazin, Igor I, Ghimire, Nirmal J
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article Dirac fermions nodal line metals quantum criticality spin fluctuations topological materials
Beschreibung
Zusammenfassung:© 2023 The Authors. Advanced Materials published by Wiley-VCH GmbH.
Quantum critical points separating weak ferromagnetic and paramagnetic phases trigger many novel phenomena. Dynamical spin fluctuations not only suppress the long-range order, but can also lead to unusual transport and even superconductivity. Combining quantum criticality with topological electronic properties presents a rare and unique opportunity. Here, by means of ab initio calculations and magnetic, thermal, and transport measurements, it is shown that the orthorhombic CoTe2 is close to ferromagnetism, which appears suppressed by spin fluctuations. Calculations and transport measurements reveal nodal Dirac lines, making it a rare combination of proximity to quantum criticality and Dirac topology
Beschreibung:Date Completed 25.05.2023
Date Revised 25.05.2023
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.202300640