Journal
JOURNAL OF PHYSICS-CONDENSED MATTER
Volume 31, Issue 25, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-648X/ab0fbc
Keywords
iron nitride monolayer; hybridization with substrates; ferromagnetic film; nanomodulation of local density of states; magnetic moment
Categories
Funding
- JSPS [16H05963, 18H011461]
- Hoso Bunka Foundation
- Shimadzu Science Foundation
- Iketani Science and Technology Foundation
- Nanotechnology Platform Program (Molecule and Material Synthesis) of the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan
- Program for Leading Graduate Schools (MERIT)
- Grants-in-Aid for Scientific Research [16H05963] Funding Source: KAKEN
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The robust bonding between Fe and N atoms has the potential to fabricate a ferromagnetic Fe2N monolayer of a square lattice independently of the symmetry of the substrate. The electronic and magnetic properties tuned by the symmetry of the substrates are investigated by comparing the results of scanning tunnel microscopy and x-ray absorption spectroscopy/magnetic circular dichroism of the square Fe2N monolayer on the Cu(1 1 1) substrate with that on the Cu(0 0 1) substrate. A periodic electronic modulation of the Fe2N monolayer on the Cu(1 1 1) substrate is induced by the stripe superlattice due to the difference of the lattice symmetry between the Fe2N monolayer and the Cu( 1 1 1) substrate. The electronic and magnetic properties of the monolayer are largely affected by the hybridization with the Cu substrate and the Fe magnetic moment is much reduced compared to the monolayer on the Cu(0 0 1) substrate.
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