One-dimensional corrugation of the h-BN monolayer on Fe(110) |
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Authors: | Vinogradov N A Zakharov A A Ng M L Mikkelsen A Lundgren E Mårtensson N Preobrajenski A B |
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Institution: | Department of Physics and Astronomy, Uppsala University, Box 530, 75121 Uppsala, Sweden. |
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Abstract: | We report on a new nanopatterned structure represented by a single atomic layer of hexagonal boron nitride (h-BN) forming long periodic waves on the Fe(110) surface. The growth process and the structure of this system are characterized by X-ray absorption (XAS), core-level photoemission spectroscopy (CL PES), low-energy electron microscopy (LEEM), microbeam low-energy electron diffraction (μLEED), and scanning tunneling microscopy (STM). The h-BN monolayer on Fe(110) is periodically corrugated in a wavy fashion with an astonishing degree of long-range order, periodicity of 2.6 nm, and the corrugation amplitude of ~0.8 ?. The wavy pattern results from a strong chemical bonding between h-BN and Fe in combination with a lattice mismatch in either 111] or 111] direction of the Fe(110) surface. Two primary orientations of h-BN on Fe(110) can be observed corresponding to the possible directions of lattice match between h-BN and Fe(110), with approximately equal area of the boron nitride domains of each orientation. |
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