| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
|
|
|
|
Electrical Control of Edge Magnetism in Two-Dimensional Buckled Honeycomb Lattice |
| BAO Wei-Cheng1, ZOU Liang-Jian1,2** |
1Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031
2Department of Physics, University of Science and Technology of China, Hefei 230026
|
|
| Cite this article: |
|
BAO Wei-Cheng, ZOU Liang-Jian 2014 Chin. Phys. Lett. 31 097501 |
|
|
|
|
Abstract We theoretically study indirect spin coupling strength between two magnetic impurities located on honeycomb Kane–Mele zigzag ribbon (KMZR) with periodic and open boundary (PB and OB). We show that spin interaction J in PB ribbons displays an AFM-FM oscillating behavior with increasing the staggered potential and electron density, and approaches to maximum at the edges. While the spin coupling in OB KMZR shows a trivial smooth AFM coupling with varying staggered potential. Such a novel J(Δ) behavior is the combining effect of finite size, topological edge states and inversion symmetry breaking induced by the staggered potential. We propose that one could control the edge magnetism electrically in two-dimensional buckled honeycomb materials, e.g., silicence, germanene and stanene.
|
|
|
|
|
| PACS: |
75.30.Hx
|
(Magnetic impurity interactions)
|
| |
81.05.ue
|
(Graphene)
|
| |
73.22.-f
|
(Electronic structure of nanoscale materials and related systems)
|
| |
75.70.Tj
|
(Spin-orbit effects)
|
|
|
|
|
|
[1] Kane C L and Mele E J 2005 Phys. Rev. Lett. 95 226801
[2] Yao Y G, Ye F, Qi X L, Zhang S C and Fang Z 2007 Phys. Rev. B 75 041401
[3] Liu C C, Feng W and Yao Y G 2011 Phys. Rev. Lett. 107 076802
[4] Vogt P, Padova P D, Quaresima C, Avila J, Frantzeskakis E, Asensio M C, Resta A, Ealet B and Guy L L 2012 Phys. Rev. Lett. 108 155501
[5] Xu Y, Yan B, Zhang H J, Wang J, Xu G, Tang P, Duan W and Zhang S C 2013 Phys. Rev. Lett. 111 136804
[6] Liu C C, Jiang H and Yao Y G 2011 Phys. Rev. B 84 195430
[7] Saremi S 2007 Phys. Rev. B 76 184430
[8] Sherafati M and Satpathy S 2011 Phys. Rev. B 83 165425
[9] Sza?owski K 2013 J. Phys.: Condens. Matter 25 166001
[10] Sun J H, Hu F M, Tang H K, Guo W and Lin H Q 2013 J. Appl. Phys. 113 17B515
[11] Zhang Z Z, Chang K and Peeters F M 2008 Phys. Rev. B 77 235411
[12] Fujita M, Wakabayashi K, Nakada K and Kusakabe K 1996 J. Phys. Soc. Jpn. 65 1920
[13] Hasan M Z and Kane C L 2010 Rev. Mod. Phys. 82 3045
[14] Ezawa M 2012 Phys. Rev. Lett. 109 055502 |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
