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A mechanism with positive feedback governing the transitions in super-low temperature physics studied via a two-species condensate with spin-1 atoms.
Sci Rep
January 2025
School of Physics, Sun Yat-Sen University, Guangzhou, 510275, People's Republic of China.
The ground states of two-species condensates with spin-1 atoms have been studied analytically and numerically. All the results from the analytical approach are checked by the latter. The [Formula: see text] channel has been neglected, where λ is the coupled spin of two different atoms.
View Article and Find Full Text PDFBinuclear ruthenium complex linker length tunes DNA threading intercalation kinetics.
Biophys J
January 2025
Department of Physics, Northeastern University, Boston, MA, 02115, USA. Electronic address:
Binuclear ruthenium complexes have been investigated for potential DNA-targeted therapeutic and diagnostic applications. Studies of DNA threading intercalation, in which DNA base pairs must be broken for intercalation, have revealed means of optimizing a model binuclear ruthenium complex to obtain reversible DNA-ligand assemblies with the desired properties of high affinity and slow kinetics. Here, we used single-molecule force spectroscopy to study a binuclear ruthenium complex with a longer semi-rigid linker relative to the model complex.
View Article and Find Full Text PDFLocal Symmetry-Broken Single Pd Atoms Induced by Doping Ag Sites for Selective Electrocatalytic Semihydrogenation of Alkynes.
ACS Nano
January 2025
Key Laboratory of Photoelectronic Conversion and Utilization of Solar Energy, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 260101, China.
Article Synopsis
- Engineering the local coordination of single metal atoms can significantly boost their catalytic ability.
- A study introduced Pd-Ag diatomic sites on g-CN, improving electrocatalytic semihydrogenation of alkynes compared to single Pd atom catalysts.
- The asymmetric coordination from introducing Ag enhanced reaction efficiency, leading to over 98% conversion to styrene and a lower energy barrier for the reaction.
Multiphase superconductivity in PdBi.
Nat Commun
January 2025
Department of Physics and Astronomy, University of Manchester, Manchester, UK.
Unconventional superconductivity, where electron pairing does not involve electron-phonon interactions, is often attributed to magnetic correlations in a material. Well known examples include high-T cuprates and uranium-based heavy fermion superconductors. Less explored are unconventional superconductors with strong spin-orbit coupling, where interactions between spin-polarised electrons and external magnetic field can result in multiple superconducting phases and field-induced transitions between them, a rare phenomenon in the superconducting state.
View Article and Find Full Text PDFTunable Mirror-Symmetric Type-III Ising Superconductivity in Atomically-Thin Natural Van der Waals Heterostructures.
Adv Mater
December 2024
School of Physics, and State Key Laboratory of Silicon Materials and Advanced Semiconductor Materials, Zhejiang University, Hangzhou, 310027, China.
Article Synopsis
- Van der Waals (vdW) crystals with strong spin-orbit coupling are key for discovering unique 2D superconductors, where new pairing states arise from the combination of various factors like SOC and crystal structure.
- The study highlights a mirror-symmetry protected Ising pairing state in a heterostructure of SnSe and TaSe, where the arrangement of the lattice helps minimize interference from certain pairing mechanisms.
- The findings indicate that these vdW heterostructures can enhance the critical temperature under specific magnetic fields, which does not occur in other multilayer configurations due to a loss of mirror symmetry.
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