Figure 1 | Scientific Reports

Figure 1

From: Induced Ferromagnetism at BiFeO3/YBa2Cu3O7 Interfaces

Figure 1

The crystallographic representation for the BFO/YBCO structure shown along the ac-plane (top panel).

Below it is a schematic drawing of the Fe interactions within BFO/YBCO superlattice structure and five representative spin configurations on the Fe atoms of BFO. The spin configuration AFM-G0 is the same as that for the BFO bulk, for which a two-sublattice structure in the G-type AFM state is formed. For the spin configurations AFM-G1 through AFM-G4, the spin alignment deviates from that of the AFM-G0 in the first two layers of BFO near the interface. In the first-principles simulations, the following lattice constants of the supercell are used: a = b = 5.564 Å and c = 51.282 Å.

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