Nodal-line driven anomalous susceptibility in ZrSiS

Gudac, Bruno; Kriener, Markus; Sharlai, Yuriy V.; Bosnar, Mihovil; Orbanić, Filip; Mikitik, Grigorii P.; Kimura, Akio; Kokanović, Ivan; Novak, Mario (2022) Nodal-line driven anomalous susceptibility in ZrSiS. Physical Review B, 105 (24). ISSN 2469-9950

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Abstract

We demonstrate a unique approach to test the signature of the nodal-line physics by thermodynamic methods. By measuring magnetic susceptibility in ZrSiS we found an intriguing temperature-driven crossover from dia- to paramagnetic behavior. We show that the anomalous behavior represents a real thermodynamic signature of the underlying nodal-line physics through the means of chemical pressure (isovalent substitution of Zr for Hf), quantum oscillations, and theoretical modeling. The anomalous part of the susceptibility is orbital by nature, and it arises due to the vicinity of the Fermi level to a degeneracy point created by the crossing of two nodal lines. Furthermore, an unexpected Lifshitz topological transition at the degeneracy point is revealed by tuning the Fermi level. The present findings in ZrSiS give an attractive starting point for various nodal-line physics-related phenomena to be tested by thermodynamic methods in other related materials.

Item Type:	Article
Uncontrolled Keywords:	Nodal Dirac semimetal
Subjects:	NATURAL SCIENCES > Physics
Divisions:	Theoretical Physics Division
Projects:	Project title Project leader Project code Project type Temeljna elektronska svojstva novih kvantnih materijala: bezmaseni i korelirani fermion-FEPNQMMCF Ivan Kokanović IP-2018-01-8912 HRZZ Centar za Napredna Istraživanja Kompleksnih Sustava-CeNIKS Mihael Srđan Grbić; Emil Tafra KK.01.1.1.02.0013 EK
Depositing User:	Kristina Ciglar
Date Deposited:	10 Jul 2026 14:21
URI:	https://fulir.irb.hr:/id/eprint/12048
DOI:	10.1103/physrevb.105.l241115

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