来源：ACS PublicationsThe development of high-performance deep-ultraviolet (deep-UV) second-order nonlinear optical (NLO) crystals that simultaneously combine noncentrosymmetric crystal structure, broad transparency, strong second-harmonic generation (SHG) activity, and high thermal and chemical stability remains a formidable challenge due to intrinsic trade-offs among these properties. Herein, we present a multicomponent structural design strategy that enables the rational synthesis of a new KBe2BO3F2 (KBBF)-like rubidium lanthanum sulfate, RbLa(SO4)2. In this crystal, the highly polarizable [La...
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2026
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来源：ACS PublicationsRare-earth (RE) chalcogenides have been extensively studied as infrared nonlinear optical (NLO) materials and have become promising candidates for achieving good integrated performance; however, the subgroup RE chalcophosphates have been rarely studied, especially Y-based ones. Here, a new quaternary RE selenophosphate, Cs2YP2Se7 (1), and the first NLO-active Y-based selenophosphate, KYP2Se6 (2), were synthesized via the reactive flux AI (A = K, Cs) assisted RExOy–B–Se solid state method developed by us. They crystallize in the monoclinic P21/n and orthorhombic chiral P21212...
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2026
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来源：ACS PublicationsPolar intermetallics are an emerging class of thermoelectric materials whose electronic properties can be finely tuned by cation chemistry. Single crystals of Eu5–xYbxAl3Sb6 and Eu5–x–ySrxYbyAl3Sb6 were synthesized by flux methods and their structures determined by single-crystal X-ray diffraction, confirming monoclinic C2/m symmetry and an electron count near 3.5 e– per atom, consistent with polar intermetallic classification. The Al content in these phases can be increased from 3 to 4. A comparative study of polycrystalline synthesized Eu5Al4Sb6 and its Sr- and Yb-substitu...
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2026
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来源：ACS PublicationsHelical spin textures in one-dimensional magnetic chains on superconductors can enable topological superconductivity and host Majorana zero modes, independent of the presence of intrinsic spin–orbit coupling. Here, we show that gadolinium (Gd) adatoms, possessing large 4f magnetic moments when placed on a Nb(110) surface, establish indirect exchange interactions mediated by valence electrons, manifesting as Yu–Shiba–Rusinov states. By combining scanning tunneling microscopy and spectroscopy with density functional theory, we analyze the emergence of the Yu–Shiba–Rusinov stat...
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2026
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