Zhong Qing, Zhang Jin, Cheng Peng, Feng Baojie, Li Wenbin, Sheng Shaoxiang, Li Hui, Meng Sheng, Chen Lan, Wu Kehui
Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
J Phys Condens Matter. 2017 Mar 8;29(9):095002. doi: 10.1088/1361-648X/aa5165. Epub 2017 Jan 27.
Two reproducible new phases of 2D boron sheets have been found on Ag(1 1 1). One of them shares the identical atomic structure of the previously reported S1 phase (β sheet) but has a different rotational relationship with the substrate, and thus exhibits very different features in scanning tunneling microscopy (STM) images. The other new phase has a hexagonal symmetry and is proposed to be the long-expected α-sheet. Both of these two boron sheets are confirmed to be metallic by scanning tunneling spectroscopy.
在Ag(1 1 1)上发现了二维硼片的两个可重现的新相。其中一个与先前报道的S1相（β片）具有相同的原子结构，但与衬底具有不同的旋转关系，因此在扫描隧道显微镜（STM）图像中表现出非常不同的特征。另一个新相具有六边形对称性，被认为是长期以来所期望的α片。通过扫描隧道光谱证实这两种硼片都是金属性的。
