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Topochemical Synthesis and Electronic Structure of High-Crystallinity Infinite-Layer Nickelates on an Orthorhombic Substrate.
Nano Lett
January 2025
Department of Physics, Hong Kong Institute for Advanced Study, City University of Hong Kong, Kowloon, Hong Kong 999077, China.
Superconductivity in infinite-layer nickelates has stirred much research interest, to which questions regarding the nature of superconductivity remain elusive. A critical leap forward to address these intricate questions is through the growth of high-crystallinity infinite-layer nickelates, including the "parent" phase. Here, we report the synthesis of a high-quality thin-film nickelate, NdNiO.
View Article and Find Full Text PDFCollective modes in terahertz field response of disordered superconductors.
J Phys Condens Matter
January 2025
Department of Physics, Kent State University, 008 Smith Hall, Kent, Ohio, 44240, UNITED STATES.
We consider a problem of nonlinear response to an external electromagnetic radiation in conventional disordered superconductors which contain a small amount of weak magnetic impurities. We focus on the diffusive limit and use Usadel equation to analyze the excitation energy and dispersion relation of the collective modes. We determine the resonant frequency and dispersion of both amplitude (Schmidt-Higgs) and phase (Carlson-Goldman) modes for moderate strength of magnetic scattering.
View Article and Find Full Text PDFInvestigation of magnetic and transport properties of GdSbSe.
J Phys Condens Matter
January 2025
Department of Chemistry, Indian Institute of Technology Delhi, Indian Institute of Technology Delhi, Hauz Khas, New delhi, New Delhi, Delhi, 110016, INDIA.
We report the detailed investigation of the magnetic, transport, and magnetocaloric effects of GdS- bSe by magnetic susceptibility χ(T ), isothermal magnetization M (H), resistivity ρ(T, H), and heat capacity Cp(T ) measurements, crystallizing in the ZrSiS-type tetragonal crystal system with space group P 4/nmm. Temperature-dependent magnetic susceptibility measurements revealed long-range antiferromagnetic ordering with two additional magnetic anomalies below N´eel temperature (TN ≈ 8.6 K), corroborated through magnetocaloric and specific heat studies.
View Article and Find Full Text PDFHeterostructure growth, electrical transport and electronic structure of crystalline Dirac nodal arc semimetal PtSn.
Sci Rep
December 2024
Department of Physics, University of Liverpool, Oxford Street, Liverpool, L69 7ZE, UK.
Topological semimetals have recently garnered widespread interest in the quantum materials research community due to their symmetry-protected surface states with dissipationless transport which have potential applications in next-generation low-power electronic devices. One such material, [Formula: see text], exhibits Dirac nodal arcs and although the topological properties of single crystals have been investigated, there have been no reports in crystalline thin film geometry. We examined the growth of [Formula: see text] heterostructures on a range of single crystals by optimizing the electron beam evaporation of Pt and Sn and studied the effect of vacuum thermal annealing on phase and crystallinity.
View Article and Find Full Text PDFTerahertz Radiation Driven Nonlinear Transport Phenomena in Two-Dimensional Tellurene.
Nano Lett
January 2025
Physics Department, University of Regensburg, 93040 Regensburg, Germany.
Nonlinear electron transport induced by polarized terahertz radiation is studied in two-dimensional tellurene at room temperature. A direct current, quadratic in the radiation's electric field, is observed. Contributions sensitive to radiation helicity and polarization orientation as well as polarization independent current are found.
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