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Spin-polarised edge states in atomic Mn chains supported on Cu2N/Cu (100)

AuthorsChoi, Deung-Jang; Robles, Roberto ; Gauyacq, J. P.; Rubio-Verdú, Carmen; Lorente, Nicolás ; Pascual, José I.
KeywordsAtomic magnetic chains
Edge states
Tamm state
Scanning tunneling microscopy
Density functional theory
Electronic structure
Issue Date2016
PublisherInstitute of Physics Publishing
CitationJournal of physics: Condensed matter 28(23): LT01 (2016)
AbstractScanning tunnelling microscopy and density functional theory studies of manganese chains adsorbed on CuN/Cu (100) reveal an unsuspected electronic edge state at ∼ 1 eV above the Fermi energy. This Tamm-like state is strongly localised to the terminal Mn atoms of the chain and fully spin polarised. However, no equivalence is found for occupied states, and the electronic structure at ∼ -1 eV is mainly spin unpolarised due to the extended p-states of the N atoms that mediate the coupling between the Mn atoms in the chain. The spin polarisation of the edge state is affected by the antiferromagnetic ordering of the chains leading to non-trivial consequences.
Identifiersdoi: 10.1088/0953-8984/28/23/23LT01
e-issn: 1361-648X
issn: 0953-8984
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(CIN2) Artículos
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