title: Metastable phases of 2D boron sheets on Ag(1 1 1).
abstract: 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 (β12sheet) 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.
authors.affiliation: Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Zhong
authors.forename: Jin
authors.initials: J
authors.lastname: Zhang
authors.forename: Peng
authors.initials: P
authors.lastname: Cheng
authors.forename: Baojie
authors.initials: B
authors.lastname: Feng
authors.forename: Wenbin
authors.initials: W
authors.lastname: Li
authors.forename: Shaoxiang
authors.initials: S
authors.lastname: Sheng
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.forename: Sheng
authors.initials: S
authors.lastname: Meng
authors.forename: Lan
authors.initials: L
authors.lastname: Chen
authors.forename: Kehui
authors.initials: K
authors.lastname: Wu