Double-impurity doping-induced quantum critical behaviors in Sr(1-x)Ba(x)Ti(1-y)Ru(y)O(3)

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	Double-impurity doping-induced quantum critical behaviors in Sr(1-x)Ba(x)Ti(1-y)Ru(y)O(3)
	Y. J. Guo; T. Wei; C. Zhu; K. F. Wang; X. S. Gao; Y. Q. Guan; J. M. Liu
	2010
发表期刊	Journal of Applied Physics
ISSN	0021-8979
卷号	107 期号:7
摘要	It has been reported both experimentally and theoretically that the Ba(2+)-doping at the A-site of quantum paraelectric SrTiO(3) suppresses the quantum fluctuations by activating the ferroelectric mode, while the Ru(4+)-doping at the B-site plays the opposite role. For a double-impurity doped SrTiO(3), i. e., Sr(1-x)Ba(x)Ti(1-y)Ru(y)O(3), where the two types of opposite effects compete with each other, we propose an improved transverse-field Ising model in order to investigate the effect of the double-impurity doping on the quantum phase transitions and critical behaviors. The calculated quantum behavior is quite well consistent with experimental measurements. A linear relationship between the quantum critical doping concentrations for Ba(2+) and Ru(4+) is predicted, subsequently validated qualitatively by an anharmonic oscillator model. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3361080]
部门归属	[liu, j. -m.] nanjing univ, nanjing natl lab microstruct, nanjing 210093, peoples r china. [liu, j. -m.] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. [gao, x. s.; guan, y. q.] s china normal univ, guangzhou 510006, guangdong, peoples r china.;liu, jm (reprint author), nanjing univ, nanjing natl lab microstruct, nanjing 210093, peoples r china;liujm@nju.edu.cn
关键词	Induced Phase-transition Srtio3 Susceptibility Paraelectrics Batio3 Model
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31129
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. J. Guo,T. Wei,C. Zhu,et al. Double-impurity doping-induced quantum critical behaviors in Sr(1-x)Ba(x)Ti(1-y)Ru(y)O(3)[J]. Journal of Applied Physics,2010,107(7).
APA	Y. J. Guo.,T. Wei.,C. Zhu.,K. F. Wang.,X. S. Gao.,...&J. M. Liu.(2010).Double-impurity doping-induced quantum critical behaviors in Sr(1-x)Ba(x)Ti(1-y)Ru(y)O(3).Journal of Applied Physics,107(7).
MLA	Y. J. Guo,et al."Double-impurity doping-induced quantum critical behaviors in Sr(1-x)Ba(x)Ti(1-y)Ru(y)O(3)".Journal of Applied Physics 107.7(2010).