The critical role of next-nearest-neighbor interlayer interaction in the magnetic behavior of magnetic/non-magnetic multilayers
oleh: Sunjae Chung, Sangyeop Lee, Taehee Yoo, Hakjoon Lee, J-H Chung, M S Choi, Sanghoon Lee, X Liu, J K Furdyna, Jae-Ho Han, Hyun-Woo Lee, Kyung-Jin Lee
| Format: | Article |
|---|---|
| Diterbitkan: | IOP Publishing 2013-01-01 |
Deskripsi
A striking multiple-step behavior has been observed in magnetoresistance measurements during magnetization reversal in anti-ferromagnetically coupled GaMnAs/GaAs:Be multilayers. This behavior arises from the splitting of the energy degeneracy of spin configurations established by nearest-neighbor interlayer exchange coupling (NN IEC) with contribution from the next-nearest-neighbor (NNN) IEC. This observation reveals that NNN IEC plays a crucial role in the magnetic behavior of these multilayer structures.