Abstract The quantum anomalous Hall effect (QAHE) has special quantum properties that are ideal for possible future spintronic devices. However, the experimental realization is rather challenging due to its low Curie temperature and small non-trivial bandgap in two-dimensional (2D) materials. In this paper, we demonstrate through first-principles calculations that monolayer CoTe material is a promising 2D candidate to realize QAHE in practice. Excitingly, through Monte Carlo simulations, it is found that the Curie temperature of single-layer CoTe can reach 573 K. The band crossing at the Fermi level in monolayer CoTe is opened when spin-orbit coupling is considered, which leads to QAHE with a sizable bandgap of meV, characterized by the non-zero Chern number and a chiral edge state. Therefore, our findings not only enrich the study of quantum anomalous Hall effect, but also broaden the horizons of the spintronics and topological nanoelectronics applications.
(Electronic transport in nanoscale materials and structures)
Fund: Project supported by the Taishan Scholar Program of Shandong Province, China (Grant No. ts20190939), the Independent Cultivation Program of Innovation Team of Jinan City (Grant No. 2021GXRC043), and the National Natural Science Foundation of China (Grant No. 52173238).
Yuan-Shuo Liu(刘元硕), Hao Sun(孙浩), Chun-Sheng Hu(胡春生), Yun-Jing Wu(仵允京), and Chang-Wen Zhang(张昌文) First-principles prediction of quantum anomalous Hall effect in two-dimensional Co2Te lattice 2023 Chin. Phys. B 32 027101
[1] Klitzing K V, Dorda G and Pepper M 1980 Phys. Rev. Lett.45 494 [2] Haldane F D M 1988 Phys. Rev. Lett.61 2015 [3] Chang C Z, Zhang J S, Feng X, et al. 2013 Science340 167 [4] Zhang H, Lazo C, Blügel S, Heinze S and Mokrousov Y 2012 Phys. Rev. Lett.108 056802 [5] Garrity K F and Vanderbilt D 2013 Phys. Rev. Lett.110 116802 [6] Kim C K, Lee I, Lee J, Billinge S, Zhong R, Schneeloch J, Liu T, Tranquada J, Gu G and Davis J C S 2015 Proc. Natl. Acad. Sci. USA112 1316 [7] Lachman E O, Young A F, Richardella A, Cuppens J, Naren H R, Anahory Y, Meltzer A Y, Kandala A, Kempinger S, Myasoedov Y, Huber M E, Samarth N and Zeldov E 2015 Sci. Adv.1 e1500740 [8] Qi X L and Zhang S C 2011 Rev. Mod. Phys.83 1057 [9] Hasan M Z and Kane C L 2010 Rev. Mod. Phys.82 3045 [10] Cao T, Wang G, Han W P, Ye H Q, Zhu C R, Shi J R, Niu Q, Tan P H, Wang E G, Liu B L and Feng J 2012 Nat. Commun.3 887 [11] Xu M S, Liang T, Shi M M and Chen H Z 2013 Chem. Rev.113 3766 [12] Levendorf M P, Kim C J, Brown L, Huang P Y, Havener R W, Muller D A and Park J 2012 Nature488 627 [13] Sun H, Li S S, Ji W X and Zhang C W 2022 Phys. Rev. B105 195112 [14] Zhang H J, Li Y F, Hou J H, Tu K X and Chen Z F 2016 J. Am. Chem. Soc.138 5644 [15] Zhang L, Zhang C W, Zhang S F, Ji W X, Li P and Wang P J 2019 Nanoscale11 5666 [16] Zhang S J, Zhang C W, Zhang S F, Ji W X, Li P, Wang P J, Li S S and Yan S S 2017 Phys. Rev. B96 205433 [17] Li S S, Ji W X, Hu S J, Zhang C W and Yan S S 2017 ACS Appl. Mater. Inter.9 41443 [18] Groot R A D, Mueller F M, Engen P G V and Buschow K H J 1984 J. Appl. Phys.55 2151 [19] Park J H, Vescovo E, Kim H J, Kwon C, Ramesh R and Venkatesan T 1998 Phys. Rev. Lett.81 1953 [20] Mavropoulos P, Ležaić M, Stefan and Blügel S 2005 Phys. Rev. B72 174428 [21] Checkelsky J G, Yoshimi R, Tsukazaki A, Takahashi K S, Kozuka Y, Falson J, Kawasaki M and Tokura Y 2014 Nat. Phys.10 731 [22] Wu J S, Liu J and Liu X J 2014 Phys. Rev. Lett.113 136403 [23] Wang Y P, Li S S, Zhang C W, Zhang S F, Ji W X, Li P and Wang P J 2018 J. Mater. Chem. C6 10284 [24] Wu S C, Shan G C and Yan B H 2014 Phys. Rev. Lett.113 256401 [27] Zhou P, Sun C Q and Sun L Z 2016 Nano Lett.16 6235 [28] Zhang M H, Zhang C W, Wang P J and Li S S 2018 Nanoscale10 20226 [29] Xiao D, Liu G B, Feng W X, Xu X D and Yao W 2012 Phys. Rev. Lett.108 196802 [30] Wang Y P, Ji W X, Zhang C W, Li P, Zhang S F, Wang P J, Li S S and Yan S S 2017 Appl. Phys. Lett.110 213101 [31] Li X, Cao T, Niu Q, Shi J R and Feng J 2013 Proc. Natl. Acad. Sci. USA110 3738 [32] Cai T Y, Li X, Wang F, Ju S, Feng J and Gong C D 2015 Nano Lett.15 6434 [33] Chen X B, Liu Y Z, Gu B L, Duan W H and Liu F 2014 Phys. Rev. B90 121403 [34] Garrity K F and Vanderbilt D 2014 Phys. Rev. B90 121103 [35] Zhang J Y, Zhao B, Xue Y, Zhou T and Yang Z Q 2018 Phys. Rev. B97 125430 [36] Blöchl P E 1994 Phys. Rev. B50 17953 [37] Kresse G and Joubert D 1999 Phys. Rev. B59 1758 [38] Perdew J P, Burke K and Ernzerhof M 1996 Phys. Rev. Lett.78 1396 [39] Mostofi A A, Yates J R, Lee Y S, Souza I, Vanderbilt D and Marzari N 2008 Comput. Phys. Commun.178 685 [40] Wang X J, Yates J R, Souza I and Vanderbilt D 2006 Phys. Rev. B74 195118 [41] Brouder C, Panati G, Calandra M, Mourougane C and Marzari N 2007 Phys. Rev. Lett.98 046402 [42] López Sancho M P, López Sancho J M and Rubio J 1984 J. Phys. F14 1205 [43] Ji W X, Zhang B M, Zhang S F, Zhang C W, Ding M, Li P and Wang P J 2017 J. Mater. Chem. C5 8504 [44] Ertekin E, Chrzan D C and Daw M S 2009 Phys. Rev. B79 155421 [45] Gong C, Li L, Li Z L, Ji H W, Stern A, Xia Y, Cao T, Bao W, Wang C Z, Wang Y, Qiu Z Q, Cava R J, Louie S G, Xia J and Zhang X 2017 Nature546 265 [46] Li X Y, Ji W X, Wang P J and Zhang C W 2021 Nanoscale Adv.3 847 [47] Yao Y G, Kleinman L, MacDonald A H, Sinova J, Jungwirth T, Wang D S, Wang E G and Niu Q 2004 Phys. Rev. Lett.92 037204 [48] Yao Y and Fang Z 2005 Phys. Rev. Lett.95 156601 [49] Taherinejad M, Garrity K F and Vanderbilt D 2013 Phys. Rev. B89 115102 [50] Mostofi A A, Yates J R, Lee Y S, Souza I, Vanderbilt D and Marzari N 2014 Comput. Phys. Commun.178 685 [51] Wolf S A, Awschalom D D, Buhrman R A, Daughton J M, Molnár S V, Roukes M L, Chtchelkanova A Y and D M Treger 2001 Science.294 1488 [52] Felser C, Fecher G H and Balke B 2007 Angew. Chem. Int. Ed.46 668 [53] Mavropoulos P, Sato K, Zeller R, Dederichs P H, Popescu V and Ebert H 2004 Phys. Rev. B69 054424 [54] Huang B, Liu F, Wu J, Gu B L and Duan W H 2008 Phys. Rev. B77 153411
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
