Exploring Fundamental Electronic Properties in Quantum Matter: Topological Systems and Beyond

Project funded by Croatian Science Foundation (HRZZ) (Research Projects), grant IP-2025-02-3955. Participating organisations named by the source: Prirodoslovno-matematički fakultet, Zagreb. Funded amount: EUR 199,870, as stated by the source. Runs 2026-01-30 to 2029-01-29. Keywords: Dirac semimetals, topological materials, material synthesis, single crystals, electrical transport properties, magnetic properties.. Source: OpenAIRE Graph, from the funder's project data (collected by OpenAIRE on 2026-07-23); national funding data, not CORDIS. Abstract given by the source: This project focus on two types of materials:We will investigate selected topological insulators choosen for their optimal properties—including an appropriately sized energy gap, and Dirac point and Fermi level positioned within the gap. Our initial goal is to develop reliable techniques for precisely controlling the Fermi level position through chemical doping and ionic liquid gating. Additionally, we aim to establish a simple and accurate method for determining the Fermi-level position of surface states.Building on our recent findings (Gudac et al., arXiv:2411.05207), we propose using the Seebeck effect as a novel and reliable tool for probing the chemical potential in a surface-transport-dominant regime. This approach will enable us to systematically explore intrinsic topological effects, such as the planar Hall effect, as a function of the chemical potential position. Furthermore, we will apply this method to study the impact of uniaxial strain on spin-momentum locking protection in surface Dirac fermions. A second key focus of our study is magnetic topological materials, particularly compounds such as EuCd2As2, a controversial material predicted to be a Weyl semimetal. However, our recent results challenge this interpretation, suggesting alternative mechanisms behind its unconventional properties. Given the ongoing debate, we aim to thoroughly investigate the magnetic and electrical transport properties of EuCd2As2 and related compounds.A central objective is to determine the ground-state magnetic ordering and establish a method for tuning it - switching from AFM to FM state—through precise control of chemical doping and synthesis conditions. This is of great general interest for understanding the unusual properties of this material. and utilizing its magnetoptical properties. Additionally, we seek to understand our preliminary observation of a strong anomalous Hall effect (AHE) in the paramagnetic phase of EuCd2As2 and use uniaxial strain influence the AHE.

Original source.

Source: OpenAIRE Graph: projects of national funders, OpenAIRE, from the project data of Croatian Science Foundation (HRZZ). Retrieved 2026-10-28. Licence: Creative Commons Attribution 4.0 (OpenAIRE Graph). Selected metadata, adapted presentation; the publisher's record is authoritative. No endorsement by the source is implied. Licence: Creative Commons Attribution 4.0 (CC BY 4.0).

AI-assisted summary: The project "Exploring Fundamental Electronic Properties in Quantum Matter" is funded by the Croatian Science Foundation with a grant of EUR 199,870, running from January 30, 2026, to January 29, 2029. It focuses on investigating topological insulators and Dirac semimetals. Suggested technology pillar: enabling. Generated by AI from the public source text; it may contain errors and the original source is authoritative.