Stable Compositions, Structures and Electronic Properties in K–Ga Systems Under Pressure
Chao Wang, Yun-Xian Liu** , Xin Chen, Pin Lv, Hai-Rui Sun, Xiao-Bing Liu**
Laboratory of High Pressure Physics and Material Science, School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165
Abstract :New stable stoichiometries in K–Ga systems are firstly investigated up to 100 GPa by the unbiased structure searching techniques. Six novel compositions as K$_{4}$Ga, K$_{3}$Ga, K$_{2}$Ga, KGa, KGa$_{2}$ and KGa$_{4}$ are found to be thermodynamically stable under pressure. Most of the predicted stable phases exhibit metallic character, while the $Fd\bar{3}m$ KGa phase behaves as a semiconductor with a bandgap $\sim $1.62 eV. Notably, the gallium atoms exhibit different interesting morphologies; e.g., Ga$_{2}$ units, zigzag chains, six rings and cage. We further investigate the bonding nature of K–Ga systems with help of electron localization function and Bader charge analyses. Strong covalent bonding characteristics are found between the Ga and Ga atoms, and ionic bonding patterns are observed between the K and Ga atoms. Meanwhile, we notice charge transferring from the K atom to the Ga atom in the K–Ga systems. The present results can be helpful for understanding the diverse structures and properties of K–Ga binary compounds at high pressures.
收稿日期: 2019-10-21
出版日期: 2020-01-18
:
62.50.-p
(High-pressure effects in solids and liquids)
61.50.Ks
(Crystallographic aspects of phase transformations; pressure effects)
71.20.-b
(Electron density of states and band structure of crystalline solids)
引用本文:
. [J]. 中国物理快报, 2020, 37(2): 26201-.
Chao Wang, Yun-Xian Liu, Xin Chen, Pin Lv, Hai-Rui Sun, Xiao-Bing Liu. Stable Compositions, Structures and Electronic Properties in K–Ga Systems Under Pressure. Chin. Phys. Lett., 2020, 37(2): 26201-.
链接本文:
https://cpl.iphy.ac.cn/CN/10.1088/0256-307X/37/2/026201
或
https://cpl.iphy.ac.cn/CN/Y2020/V37/I2/26201
[1] Ma Y, Eremets M and Oganov A R 2009 Nature 458 182 [2] Liu M, Tian C and Huang X 2019 Chin. Phys. B 28 068101 [3] Duan D, Liu Y and Tian F 2015 Sci. Rep. 4 6968 [4] Jia Y T, Zhao J F and Zhang S J 2019 Chin. Phys. Lett. 36 087401 [5] Lin J, Zhang S and Guan W 2018 J. Am. Chem. Soc. 140 9545 [6] Li P, Cui W and Li R 2017 Chin. Phys. Lett. 34 076201 [7] Li Y, Feng X and Liu H 2018 Nat. Commun. 9 722 [8] Sun G, Huang H and Li Y 2016 Chin. Phys. Lett. 33 026104 [9] Li Q, Zhou D and Zheng W 2013 Phys. Rev. Lett. 110 136403 [10] Lu C, Li Q and Ma Y 2017 Phys. Rev. Lett. 119 115503 [11] McCulloch W D, Ren X and Yu M 2015 ACS Appl. Mater. & Interfaces 7 26158 [12] Patel N N, Verma A K and Mishra A K 2017 Phys. Chem. Chem. Phys. 19 7996 [13] Zhang W, Oganov A R and Zhu Q 2016 Sci. Rep. 6 26265 [14] Snider T S and Badding J V 2004 Solid State Commun. 131 157 [15] Atou T, Hasegawa M and Parker L 1996 J. Am. Chem. Soc. 118 12104 [16] Xue M, Chen G and Yang H 2012 J. Am. Chem. Soc. 134 6536 [17] Liu Y, Wang C and Kong X 2017 Inorg. Chem. 56 12529 [18] Ji C, Zhang F and Hou D 2011 J. Phys. Chem. Solids 72 736 [19] Li J, Wang X and Xu N 2013 Europhys. Lett. 104 16005 [20] Zhang M, Yan H and Wei Q 2015 RSC Adv. 5 11825 [21] Oganov A R and Glass C W 2006 J. Chem. Phys. 124 244704 [22] Oganov A R, Lyakhov A O and Valle M 2011 Acc. Chem. Res. 44 227 [23] Lyakhov A O, Oganov A R and Stokes H T 2013 Comput. Phys. Commun. 184 1172 [24] Zhang H, Hu C and Wang D 2018 Chin. Phys. B 27 083601 [25] Liu Y, Wang C and Lv P 2018 Solid State Commun. 280 18 [26] Wang Y, Tian F and Li D 2019 Chin. Phys. B 28 056104 [27] Wang C, Liu Y, Lv P 2018 Chem. Eur. J. 24 18757 [28] Chu B, Zhao Y and Yan J 2018 Chin. Phys. Lett. 35 016401 [29] Li Q, Wang Z and Yu Y 2019 Chin. Phys. B 28 013101 [30] Perdew J P, Burke K and Ernzerhof M 1996 Phys. Rev. Lett. 77 3865 [31] Kresse G and Furthmüller J 1996 Comput. Mater. Sci. 6 15 [32] Kresse G and Joubert D 1999 Phys. Rev. B 59 1758 [33] Becke A D and Edgecombe K E 1990 J. Chem. Phys. 92 5397 [34] Bader R F 1985 Acc. Chem. Res. 18 9 [35] Henkelman G, Arnaldsson A and Jónsson H 2006 Comput. Mater. Sci. 36 354 [36] Tang W, Sanville E and Henkelman G 2009 J. Phys.: Condens. Matter 21 084204 [37] Parlinski K, Li Z and Kawazoe Y 1997 Phys. Rev. Lett. 78 4063 [38] Togo A, Oba F and Tanaka I 2008 Phys. Rev. B 78 134106
[1]
. [J]. 中国物理快报, 2023, 40(3): 37403-.
[2]
. [J]. 中国物理快报, 2023, 40(1): 17403-.
[3]
. [J]. 中国物理快报, 2022, 39(9): 96201-.
[4]
. [J]. 中国物理快报, 2022, 39(5): 56101-.
[5]
. [J]. 中国物理快报, 2021, 38(6): 66201-.
[6]
. [J]. 中国物理快报, 2021, 38(3): 36201-.
[7]
. [J]. 中国物理快报, 2020, 37(10): 107401-.
[8]
. [J]. 中国物理快报, 2020, 37(8): 80701-.
[9]
. [J]. 中国物理快报, 2020, 37(7): 76201-.
[10]
. [J]. 中国物理快报, 2020, 37(7): 76202-.
[11]
. [J]. 中国物理快报, 2020, 37(7): 76203-.
[12]
. [J]. 中国物理快报, 2020, 37(6): 66201-.
[13]
. [J]. 中国物理快报, 2020, 37(6): 66202-.
[14]
. [J]. 中国物理快报, 0, (): 66201-.
[15]
. [J]. 中国物理快报, 2020, 37(4): 44204-.