Adsorbate electronic structure and chemical bonding

Adsorbate Electronic Structure and Bonding on Metal Surfaces Substrate Adatom 

N adsorbed on Cu(100) [27], see Section 5 for more details. The experiment measures the N-2p density of states, i.e., the projection of the partial p-density of states onto the nitrogen adatom. The atomic level is split into two distinct levels which are bonding and antibonding, respectively, with respect to the Cu d-band. This represents the case when the hopping matrix element is larger than the width of the metal d-band. 

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