Quantum oscillations of the magnetic torque in the nodal-line Dirac semimetal ZrSiS

Scientific paper - Original scientific paper

• Author: F. Orbanić
• Author: M. Novak
• Author: Z. Glumac
• Author: A. McCollam
• Author: L. Tang
• Author: I. Kokanović
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

We report a study of quantum oscillations (QO) in the magnetic torque of the nodal-line Dirac semimetal ZrSiS in the magnetic fields up to 35 T and the temperature range from 40 K down to 2 K, enabling high resolution mapping of the Fermi surface (FS) topology in the kz = π (Z-R- A) plane of the first Brillouin zone (FBZ). It is found that the oscillatory part of the measured magnetic torque signal consists of low frequency (LF) contributions (frequencies up to 1000 T) and high frequency (HF) contributions (several clusters of frequencies from 7–22 kT). Increased resolution and angle-resolved measurements allow us to show that the high oscillation frequencies originate from magnetic breakdown (MB) orbits involving clusters of individual α hole and β electron pockets from the diamond shaped FS in the Z-R-A plane. Analyzing the HF oscillations we unequivocally show that the QO frequency from the dog-bone shaped Fermi pocket (β pocket) amounts β = 591(15) T. Our findings suggest that most of the frequencies in the LF part of QO can also be explained by MB orbits when intraband tunneling in the dog- bone-shaped β electron pocket is taken into account. Our results give a new understanding of the novel properties of the FS of the nodal-line Dirac semimetal ZrSiS and sister compounds.

• Keywords (english): Dirac semimetal; magnetic properties; eletronic structure
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Physical Review B
• Numbering: vol. 103, no. 4, 045122
• p-ISSN: 2469-9950
• e-ISSN: 2469-9969
• DOI: https://doi.org/10.1103/PhysRevB.103.045122
• URN:NBN: urn:nbn:hr:217:750483
• Publication: 2021
• Project: Number: IP-2018-01-8912; Title (croatian): Temeljna elektronska svojstva novih kvantnih materijala: bezmaseni i korelirani fermion; Title (english): Fundamental electronic properties of new quantum materials: massless and correlated fermion; Acronym: FEPNQMMCF; Leader: Ivan Kokanović; Jurisdiction: Croatia; Funding stream: IP
• Document URL: https://link.aps.org/doi/10.1103/PhysRevB.103.045122
• Type of resource: Text
• Access conditions: Open access
• Public note: © 2021 American Physical Society. Received 15 October 2020; Accepted 4 January 2021; Published 19 January 2021.
• Created on: 2023-08-06 20:24:08