Origin of electric-field-induced modification of magnetocrystalline anisotropy at Fe(001) surfaces: Mechanism of dipole formation from first principles
作者： Kohji Nakamura , Riki Shimabukuro , Toru Akiyama , Tomonori Ito , A. J. Freeman
DOI: 10.1103/PHYSREVB.80.172402
关键词:
摘要: First-principles full-potential linearized augmented plane-wave studies reveal that a surface magnetocrystalline anisotropy (MCA) modification by an external electric field arises from dipole formation mechanism. The precise calculations demonstrate the of dipoles on Fe(001) atoms, which counteract electric-field-induced charge in vacuum region, changes states around Fermi level minority-spin $d$ bands, and yields MCA. These findings greatly advance our understanding MCA modifications itinerant ferromagnetic surfaces.
harvard.edu
sci-hub.se 参考文章(20)
W. Eerenstein, N. D. Mathur, J. F. Scott, Multiferroic and magnetoelectric materials Nature. ,vol. 442, pp. 759- 765 ,(2006) , 10.1038/NATURE05023
R. Ramesh, Nicola A. Spaldin, Multiferroics: progress and prospects in thin films. Nature Materials. ,vol. 6, pp. 21- 29 ,(2007) , 10.1038/NMAT1805
Martin Weisheit, Sebastian FÃhler, Alain Marty, Yves Souche, Christiane Poinsignon, Dominique Givord, None, Electric Field-Induced Modification of Magnetism in Thin-Film Ferromagnets Science. ,vol. 315, pp. 349- 351 ,(2007) , 10.1126/SCIENCE.1136629
T. Maruyama, Y. Shiota, T. Nozaki, K. Ohta, N. Toda, M. Mizuguchi, A. A. Tulapurkar, T. Shinjo, M. Shiraishi, S. Mizukami, Y. Ando, Y. Suzuki, Large voltage-induced magnetic anisotropy change in a few atomic layers of iron Nature Nanotechnology. ,vol. 4, pp. 158- 161 ,(2009) , 10.1038/NNANO.2008.406
K. Ohta, T. Maruyama, T. Nozaki, M. Shiraishi, T. Shinjo, Y. Suzuki, S.-S. Ha, C.-Y. You, W. Van Roy, Voltage control of in-plane magnetic anisotropy in ultrathin Fe∕n-GaAs(001) Schottky junctions Applied Physics Letters. ,vol. 94, pp. 032501- ,(2009) , 10.1063/1.3072344
Chun-Gang Duan, Julian P. Velev, R. F. Sabirianov, Ziqiang Zhu, Junhao Chu, S. S. Jaswal, E. Y. Tsymbal, Surface magnetoelectric effect in ferromagnetic metal films. Physical Review Letters. ,vol. 101, pp. 137201- 137201 ,(2008) , 10.1103/PHYSREVLETT.101.137201
Ruqian Wu, A.J. Freeman, Spin}orbit induced magnetic phenomena in bulk metals and their surfaces and interfaces Journal of Magnetism and Magnetic Materials. ,vol. 200, pp. 498- 514 ,(1999) , 10.1016/S0304-8853(99)00351-0
Kohji Nakamura, Riki Shimabukuro, Yuji Fujiwara, Toru Akiyama, Tomonori Ito, A. J. Freeman, Giant Modification of the Magnetocrystalline Anisotropy in Transition-Metal Monolayers by an External Electric Field Physical Review Letters. ,vol. 102, pp. 187201- ,(2009) , 10.1103/PHYSREVLETT.102.187201
E. Wimmer, H. Krakauer, M. Weinert, A. J. Freeman, Full-potential self-consistent linearized-augmented-plane-wave method for calculating the electronic structure of molecules and surfaces: O 2 molecule Physical Review B. ,vol. 24, pp. 864- 875 ,(1981) , 10.1103/PHYSREVB.24.864
M. Weinert, E. Wimmer, A. J. Freeman, Total-energy all-electron density functional method for bulk solids and surfaces Physical Review B. ,vol. 26, pp. 4571- 4578 ,(1982) , 10.1103/PHYSREVB.26.4571