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Role of spin-orbit coupling for the band splitting in ⍺-Sb and ⍺-Bi on SiC(0001).
J Phys Condens Matter
January 2025
AIMR, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8578, JAPAN.
Monolayer atomic thin films of group-V elements have a high potential for application in spintronics and valleytronics because of their unique crystal structure and strong spin-orbit coupling. We fabricated Sb and Bi monolayers on a SiC(0001) substrate by the molecular-beam-epitaxy method and studied the electronic structure by angle-resolved photoemission spectroscopy (ARPES) and first-principles calculations. The fabricated Sb film shows the (√3×√3)R30º superstructure associated with the formation of ⍺-Sb, and exhibits a semiconducting nature with a band gap of more than 1.
View Article and Find Full Text PDFDispersive nodal fermions along grain boundaries in Floquet topological crystals.
Sci Rep
January 2025
Department of Physics, Lehigh University, Bethlehem, Pennsylvania, 18015, USA.
Driven quantum materials often feature emergent topology, otherwise absent in static crystals. Dynamic bulk-boundary correspondence, encoded by nondissipative gapless modes residing near the Floquet zone center and/or boundaries, is its most prominent example. Here we show that topologically robust gapless dispersive modes appear along the grain boundaries, embedded in the interior of Floquet topological crystals, when the Floquet-Bloch band inversion occurring at a finite momentum ( ) and the Burgers vector ( ) of the constituting array of dislocations satisfy (modulo ).
View Article and Find Full Text PDFFluorinated Cyclic Olefin Copolymers (COCs) and Cyclic Olefin Polymers (COPs).
Macromol Rapid Commun
January 2025
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Renmin Street 5625, Changchun, 130022, China.
The demand for insulating materials with superior dielectric properties has increased. Among these materials, polymers containing cyclic structure including cyclic olefin copolymer (COC) and cyclic olefin polymer (COP) stand out because of their excellent dielectric properties originating from the pure hydrocarbon structure. Introducing fluorine into polymers is one efficient strategy for optimizing the dielectric and the related important properties.
View Article and Find Full Text PDFRole of spin-orbit coupling for the band splitting in ⍺-Sb and ⍺-Bi on SiC(0001).
J Phys Condens Matter
January 2025
AIMR, Tohoku University, 2-1-1, Katahira, Aoba-ku, Sendai, 980-8578, JAPAN.
Monolayer atomic thin films of group-V elements have a high potential for application in spintronics and valleytronics because of their unique crystal structure and strong spin-orbit coupling. We fabricated Sb and Bi monolayers on a SiC(0001) substrate by the molecular-beam-epitaxy method and studied the electronic structure by angle-resolved photoemission spectroscopy (ARPES) and first-principles calculations. The fabricated Sb film shows the (√3×√3)R30º superstructure associated with the formation of ⍺-Sb, and exhibits a semiconducting nature with a band gap of more than 1.
View Article and Find Full Text PDFFe diaspora titanium dioxide and graphene: A study of conductive powder materials and coating applications.
J Colloid Interface Sci
January 2025
Liaoning Key Laboratory for Chemical Clean Production, Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, Institute of Ocean Research, Institute Environmental Research, College of Chemistry and Material Engineering, Bohai University, Jinzhou 121013 Liaoning, China. Electronic address:
Developing new conductive primers to ensure electrostatic spraying is crucial in response to the call for lightweight production of new energy vehicles. We report a stabilized material, Fe-T/G, of Fe-doped TiO composite graphene synthesized by a simple hydrothermal and electrostatic self-assembly method. The resistivity decreases from 0.
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