Ring State for Single Transition Metal Atoms on Boron Nitride on Rh(111)

The low-temperature adsorption of isolated transition metal adatoms (Mn, Co, and Fe) onto hexagonal boron nitride monolayers on Rh(111) creates a bistable adsorption complex. The first state considerably weakens the hexagonal boron nitride- (h-BN-) substrate bond for 60 BN unit cells, leading to a highly symmetric ring in STM images, while the second state is imaged as a conventional adatom and leaves the BN-substrate interaction intact. We demonstrate reversible switching between the two states and, thus, controlled pinning and unpinning of the h-BN layer from the metal substrate. I(z) and d ln(l)/dz curves are used to reveal the BN deformation in the ring state.


Published in:
Physical Review Letters, 109, 6, 066101
Year:
2012
Publisher:
College Pk, Amer Physical Soc
ISSN:
1079-7114
Laboratories:




 Record created 2012-08-15, last modified 2018-03-17

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