In-plane quadruple-fold symmetry of magnetism and tricritical phenomenon in CeAlSi
Year: 2025
Type: article
Abstract: Noncentrosymmetric magnetic Weyl semimetal CeAlSi offers a unique platform for investigating exotic entanglement between magnetism and topology. We thoroughly investigate the anisotropic magnetization and critical phenomenon of CeAlSi single crystal. Our investigation uncovers an in-plane quadruple-fold symmetry of magnetism and a field-induced tricritical phenomenon. We construct a detailed H−T phase diagram for [Formula: see text] of CeAlSi, clearly distinguishing non-collinear ferromagnetic (NC-FM), forced FM (FFM), paramagnetic (PM) phases, and a ground state of NC-FM domains, with a first-order transition from PM to NC-FM. Moreover, a delicate tricritical point (TCP) is identified at ([Formula: see text], [Formula: see text]).
Source: Materials Research Letters
Institutions: Chinese Academy of Sciences, Hefei Institutes of Physical Science, High Magnetic Field Laboratory, Sanming University, Beihang University, Huazhong University of Science and Technology, Anhui University, Nanjing University of Aeronautics and Astronautics, Suzhou University of Science and Technology, University of Science and Technology of China
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,459
OpenAlex ID: W4414629925