Quantum Materials
In our laboratory, research in quantum materials is conducted with a multidisciplinary approach, leveraging a combination of experimental and theoretical methods to explore the unique and often exotic quantum phenomena exhibited by materials. We focus on a wide range of quantum materials ranging from and not limited to topological materials, quantum spin liquids, superconductor and skyrmions.
Materials Synthesis
Our group approaches material synthesis through a versatile combination of solid state synthesis, vapor transport, floating zone and flux crystal growth techniques. By employing these diverse synthesis methods, our lab is equipped to tailor the properties of materials for specific applications, explore novel compounds, and advance our understanding of the fundamental principles governing material behavior.
Characterization
In Morosan lab we employ a comprehensive approach to characterizing materials by means of powdered X-ray diffraction, magnetotransport and specific heat measurements. We use powdered X-ray diffraction to examine the crystal structure and composition of materials. Magnetotransport is used to investigate the electronic and magnetic properties of materials and specific heat provides a detailed understanding of the thermal properties.
Recent Publications
In our publication titled ''Kramers nodal lines in intercalated TaS₂ superconductors'' we demonstrate an ideal material platform for one type of novel topological materials, known as the Kramers nodal line metals. In these materials, enforced by mirror and time-reversal symmetries, the energy-momentum trajectories of electrons can be paired carrying the topological character, known as the Kramers nodal lines. Our discovery of ideal Kramers nodal line metals is the first step towards understanding their relationship with other emergent phenomena and constructing future devices for applications.
Read more: Nature Communications16, 4984 (2025).
In our publication titled ''Anomalous Hall effect emerging from field-induced Weyl nodes in SmAlSi'' we report the discovery of large anomalous Hall effect (AHE) up to 100 K in the antiferromagnetic Weyl semimetal SmAlSi, which is the first observation of AHE outside a ferromagnetic state in non-centrosymmetric Weyl semimetals. The AHE in SmAlSi is different from the AHE in the centrosymmetric Mn₃Sn or GdPtBi. It is also distinct from the AHE in altermagnetic compounds, which is only observed in the ordered state. We propose a new AHE mechanism in SmAlSi, where the AHE is generated from the Weyl nodes due to the breaking of time reversal symmetry under an external magnetic field.
Read more: Phys. Rev. Materials 9, L061201 (2025).
Our paper titled "Correlation between complex spin textures and the magnetocaloric and Hall effects in Eu(Ga₁₋ₓAlₓ)4 (𝑥=0.9, 1)" combines magnetotransport, magnetization, magnetocaloric effect (MCE), and neutron-scattering measurements to map the magnetic field–temperature phase diagrams of Eu(Ga₁₋ₓAlₓ)₄ (x = 0.9, 1) and to clarify the relationship between complex spin textures and the topological Hall effect (THE). The results suggest that in Eu(Ga₁₋ₓAlₓ)₄ the maximal THE likely arises from itinerant electron interactions with frustrated spin fluctuations or metamagnetic multiband effects, rather than from topologically nontrivial spin textures.
Read more: Phys. Rev. B 111, 165136 (2025).
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