Surface reconstruction limited magnetism of the nodal loop semimetal Ca$$_3$$P$$_2$$

Year: 2024

Type: article

Abstract: Nodal loop semimetals are topological materials with drumhead surface states characterized by reduced kinetic energy. If the Fermi energy of such a system is near these nondispersive states interaction among charge carriers substantially impacts their electronic structure. The emergence of magnetism in these surface states is one of the possible consequences. Ca[Formula: see text]P[Formula: see text] an already synthesized material possesses a remarkably large nodal loop which is situated exactly at the Fermi level of the bulk system. In the present work, we investigate how surface magnetism is impacted by surface reconstruction and lattice termination in finite slabs in this material. We show that a slight deviation from the stoichiometric occupation of Ca sites results in the stabilization of magnetic patterns.

Source: Scientific Reports

DOI: 10.1038/s41598-024-83168-y

Authors: Assem Alassaf, János Koltai, Amador García-Fuente, László Oroszlány

Institutions: Eötvös Loránd University, Consejo Superior de Investigaciones Científicas, Universidad de Oviedo, Nanomaterials and Nanotechnology Research Center, HUN-REN Wigner Research Centre for Physics

Language: English

Topic: Topological Materials and Phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,590

Funders: European Commission, Nemzeti Kutatási Fejlesztési és Innovációs Hivatal, Tempus Közalapítvány, HORIZON EUROPE Framework Programme, European Regional Development Fund, Agencia Estatal de Investigación, National Research, Development and Innovation Office

OpenAlex ID: W4405907974