Characteristics of charge density waves on the surfaces of quasi-one-dimensional charge-transfer complex layered organic crystals

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	Characteristics of charge density waves on the surfaces of quasi-one-dimensional charge-transfer complex layered organic crystals
	Lin F ; Huang XM ; Qu SC ; Fang ZY ; Huang S ; Song WT ; Zhu X ; Liu ZF
刊名	physical review b
	2011
卷号	83 期号:12 页码:article no.125434
关键词	SCANNING-TUNNELING-MICROSCOPY MOLECULAR CONDUCTORS PHASE-TRANSITION TETRACYANOQUINODIMETHANE (EDO-TTF)(2)PF6 DERIVATIVES TTF
ISSN号	1098-0121
通讯作者	lin, f, peking univ, sch phys, beijing 100871, peoples r china. zhuxing@pku.edu.cn
学科主题	半导体材料
收录类别	SCI
资助信息	nsfc [60977015, 61076009, 60736034]; most [2007cb936800]
语种	英语
公开日期	2011-07-05 ; 2011-07-15
附注	we performed scanning tunneling microscope (stm) studies to observe the surface electronic structure of the following semiconducting charge-transfer complexes: dipropylamine-tetracyanoquinodimethane [dpa(tcnq)(2)], triethylammonium [tea (tcnq)(2)], and n-ethylmorpholinium [hem(tcnq)(2)], which all possess the molecularly flat bc surface terminated predominately with the quasi-one-dimensional (1d) tcnq(-0.5) anion chains or the corresponding dpa(+), tea(+), and hem+ cations contributing a lesser fraction. on the bc surfaces terminated with tcnq(-0.5) anions for all crystals, the 4k(f)[dpa(tcnq)(2)] or 2k(f) [tea(tcnq)(2) and hem(tcnq)(2)] charge density wave (cdw) driven by the spin-peierls or peierls instability for the quasi-1d tcnq(-0.5) chains, respectively, which occur already within the bulk, were probed by use of stm on the crystal surfaces. in that the surface lattice constants obtained from cdw are in good agreement with the bulk ones obtained by x-ray diffraction, such cdws are commensurate. this modulation of the electric structure is so distinct that the geometric corrugation of individual tcnq anions was hardly traced during our stm measurements. on the bc surfaces terminated with dpa(+), tea(+), and hem+ cations, the stm images with submolecular resolution represent the geometric corrugation of individual molecular cations, and the surface lattice constants obtained deviate greatly from that of the x-ray crystal structures, indicating self-reassembling of the surface cations.
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/21269]
专题	半导体研究所_中科院半导体材料科学重点实验室
推荐引用方式 GB/T 7714	Lin F,Huang XM,Qu SC,et al. Characteristics of charge density waves on the surfaces of quasi-one-dimensional charge-transfer complex layered organic crystals[J]. physical review b,2011,83(12):article no.125434.
APA	Lin F.,Huang XM.,Qu SC.,Fang ZY.,Huang S.,...&Liu ZF.(2011).Characteristics of charge density waves on the surfaces of quasi-one-dimensional charge-transfer complex layered organic crystals.physical review b,83(12),article no.125434.
MLA	Lin F,et al."Characteristics of charge density waves on the surfaces of quasi-one-dimensional charge-transfer complex layered organic crystals".physical review b 83.12(2011):article no.125434.