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5 papers · 2 filters
Single channel conductance of H molecules attached to platinum or palladium electrodes
V. M. Garcia-Suarez, A. R. Rocha, S. W. Bailey +3
We report a detailed theoretical study of the bonding and conduction properties of an hydrogen molecule joining either platinum or palladium electrodes. We show that an atomic arra…
Ferromagnetism in substituted zinc oxide
M. Venkatesan, C. B. Fitzgerald, J. G. Lunney +1
Room-temperature ferromagnetism is observed in (110) oriented ZnO films containing 5 at % of Sc, Ti, V, Fe, Co or Ni, but not Cr, Mn or Cu ions. There are large moments, 1.9 and 0.…
Different origin of the ferromagnetic order in (Ga,Mn)As and (Ga,Mn)N
Malgorzata Wierzbowska, Daniel Sanchez-Portal, Stefano Sanvito
The mechanism for the ferromagnetic order of (Ga,Mn)As and (Ga,Mn)N is extensively studied over a vast range of Mn concentrations. We calculate the electronic structures of these m…
Self-assembly of iron nanoclusters on the Fe3O4(111) superstructured surface
N. Berdunov, G. Mariotto, S. Murphy +1
We report on the self-organized growth of a regular array of Fe nanoclusters on a nanopatterned magnetite surface. Under oxidizing preparation conditions the (111) surface of magne…
Atomically Resolved Spin-Dependent Tunnelling on the Oxygen-Terminated Fe3O4 (111)
N. Berdunov, S. Murphy, G. Mariotto +1
We employ spin-polarized (SP) STM to study the spin-dependent tunneling between a magnetite (111) sample and an antiferromagnetic tip through a vacuum barrier at room temperature.…