Peculiar bonding associated with atomic doping and hidden honeycombs in borophene

淡江大學機構典藏 > 理學院 > 物理學系暨研究所 > 期刊論文 > Item 987654321/117168

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題名:	Peculiar bonding associated with atomic doping and hidden honeycombs in borophene
作者:	Lee, Chi-Cheng;Feng, Baojie;D'angelo, Marie;Ryu Yukawa, Ro-Ya Liu;Kondo, Takahiro;Kumigashira, Hiroshi;Matsuda, Iwao;Ozaki, Taisuke
日期:	2018-02-20
上傳時間:	2019-10-01 12:10:14 (UTC+8)
摘要:	Engineering atomic-scale structures allows great manipulation of physical properties and chemical processes for advanced technology. We show that the B atoms deployed at the centers of honeycombs in boron sheets, borophene, behave as nearly perfect electron donors for filling the graphitic σ bonding states without forming additional in-plane bonds by first-principles calculations. The dilute electron density distribution owing to the weak bonding surrounding the center atoms provides easier atomic-scale engineering and is highly tunable via in-plane strain, promising for practical applications, such as modulating the extraordinarily high thermal conductance that exceeds the reported value in graphene. The hidden honeycomb bonding structure suggests an unusual energy sequence of core electrons that has been verified by our high-resolution core-level photoelectron spectroscopy measurements. With the experimental and theoretical evidence, we demonstrate that borophene exhibits a peculiar bonding structure and is distinctive among two-dimensional materials.
關聯:	Phys. Rev. B 97(7), 075430
DOI:	10.1103/PhysRevB.97.075430
顯示於類別:	[物理學系暨研究所] 期刊論文

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