Effect of stripe order on the vortex phase transition in La(1.44)Nd(0.4)Sr(0.16)CuO(4) films

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	Effect of stripe order on the vortex phase transition in La(1.44)Nd(0.4)Sr(0.16)CuO(4) films
	Y. Q. Zhang; J. F. Ding; X. Q. Xiang; X. G. Li; Q. H. Chen
	2009
发表期刊	Superconductor Science & Technology
ISSN	0953-2048
卷号	22 期号:8
摘要	The vortex phase transition in La(1.44)Nd(0.4)Sr(0.16)CuO(4) epitaxial films with different thicknesses under a compressive strain were studied systematically by measuring the current-voltage (IV) characteristics in magnetic fields perpendicular to the CuO(2) planes. For a strongly compressed thin film, in which the static stripe order is destroyed, the IV curves show a good three-dimensional (3D) vortex glass (VG) scaling collapse in various magnetic fields, indicating a 3D VG phase transition. By applying the standard scaling procedure to the data of a strain-released thick film with static stripe order, neither a 3D nor a quasi-2D VG model works well. Further investigation shows that, in order to achieve a good scaling collapse, the Kosterlitz-Thouless correlation length should be used for the isothermals above T(g). The scaling of isothermals below T(g) can also be optimized if the VG correlation length and adjusted static critical exponent nu are used with D = 2 only, indicating that a quasi-2D VG phase might exist. Our findings reveal that the nature of the vortex phase transition is completely altered in the presence of the stripe order.
部门归属	[zhang, y. q.; ding, j. f.; xiang, x. q.; li, x. g.] univ sci & technol china, dept phys, hefei natl lab phys sci microscale, hefei 230026, peoples r china. [zhang, y. q.; ding, j. f.; xiang, x. q.; li, x. g.] acad sinica, int ctr mat phys, shenyang 110015, peoples r china. [chen, q. h.] zhejiang univ, dept phys, hangzhou 310027, peoples r china.;zhang, yq (reprint author), univ sci & technol china, dept phys, hefei natl lab phys sci microscale, hefei 230026, peoples r china;lixg@ustc.edu.cn
关键词	Glass Transition Thin-films Superconductors Transport
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32585
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Q. Zhang,J. F. Ding,X. Q. Xiang,et al. Effect of stripe order on the vortex phase transition in La(1.44)Nd(0.4)Sr(0.16)CuO(4) films[J]. Superconductor Science & Technology,2009,22(8).
APA	Y. Q. Zhang,J. F. Ding,X. Q. Xiang,X. G. Li,&Q. H. Chen.(2009).Effect of stripe order on the vortex phase transition in La(1.44)Nd(0.4)Sr(0.16)CuO(4) films.Superconductor Science & Technology,22(8).
MLA	Y. Q. Zhang,et al."Effect of stripe order on the vortex phase transition in La(1.44)Nd(0.4)Sr(0.16)CuO(4) films".Superconductor Science & Technology 22.8(2009).