Substrate-induced structural modulation of a CoO(111) bilayer on Ir(100)

Christina Ebensperger; Matthias Gubo; Wolfgang Meyer; Lutz Hammer; Klaus Heinz

首页> 外文期刊>Physical review >Substrate-induced structural modulation of a CoO(111) bilayer on Ir(100)

【24h】

Substrate-induced structural modulation of a CoO(111) bilayer on Ir(100)

机译：基质诱导的Ir（100）上CoO（111）双层的结构调制

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相似文献
相关主题

摘要

We report on an unusual structural modulation of a single CoO(111) bilayer grown on Ir(100)-(1 × 1) by oxidation of slightly less than one monolayer of Co deposited on the substrate. Quantitative low-energy electron diffraction and scanning tunneling microscopy in combination with standard x-ray photoelectron spectroscopy and thermal-desorption spectroscopy reveal a cobalt layer next to the substrate covered by an oxygen layer. Both layers' hexagonal atomic arrangements are, however, strongly distorted by the quadratic substrate and form a c(10×2) superstructure on that. The Co layer's buckling amplitudes and atomic bond lengths to Ir atoms are consistent with the hard-sphere radius of metallic Co. The oxide's binding to the substrate appears to be further characterized by two types of oxygen ions. One of them is close to the expected rocksalt-type stacking with respect to the cobalt layer while the other type resides nearly on top of Ir atoms. Its hard-sphere radius is only 0.77 A (in contrast to 1.25 A in the CoO bulk) and it is by about 1 A closer to the substrate than the other type. Being so almost coplanar with the Co layer, it locally forms a hexagonal boron-nitride-type oxide. The oxygen bond to Ir can be interpreted as local pinning of the oxide to the substrate so modulating the entire oxide bilayer.

机译：我们报告了一个不寻常的结构调制的单CoO（111）双层生长在Ir（100）-（1×1）上，其氧化程度略小于沉积在基材上的Co单层。定量低能电子衍射和扫描隧道显微镜与标准X射线光电子能谱和热脱附能谱相结合，显示出在被氧层覆盖的衬底旁边的钴层。但是，两层的六角形原子排列都被二次衬底强烈扭曲，并在其上形成c（10×2）上层结构。 Co层到Ir原子的屈曲幅度和原子键长与金属Co的硬球半径一致。氧化物与基材的结合似乎进一步由两种类型的氧离子表征。它们中的一个相对于钴层而言接近预期的岩盐型堆积，而另一种类型则几乎位于Ir原子的顶部。它的硬球半径仅为0.77 A（相比之下，CoO块中的半径为1.25 A），并且与其他类型的硬球半径相比更接近基板1A。由于与Co层几乎共面，因此会局部形成六方氮化硼型氧化物。可以将与Ir的氧键解释为将氧化物局部钉扎到基材上，从而调节整个氧化物双层。

著录项

来源
《Physical review》 |2010年第23期|P.235405.1-235405.7|共7页
作者
Christina Ebensperger; Matthias Gubo; Wolfgang Meyer; Lutz Hammer; Klaus Heinz;
展开▼
作者单位

Lehrstuhl fuer Festkoerperphysik, Universitaet Erlangen-Nuernberg, Staudtstr. 7, D-91058 Erlangen, Germany;

rnLehrstuhl fuer Festkoerperphysik, Universitaet Erlangen-Nuernberg, Staudtstr. 7, D-91058 Erlangen, Germany;

rnLehrstuhl fuer Festkoerperphysik, Universitaet Erlangen-Nuernberg, Staudtstr. 7, D-91058 Erlangen, Germany;

rnLehrstuhl fuer Festkoerperphysik, Universitaet Erlangen-Nuernberg, Staudtstr. 7, D-91058 Erlangen, Germany;

rnLehrstuhl fuer Festkoerperphysik, Universitaet Erlangen-Nuernberg, Staudtstr. 7, D-91058 Erlangen, Germany;

展开▼
收录信息
原文格式 PDF
正文语种 eng
中图分类
关键词
oxide surfaces; interface structure and roughness;

机译：氧化物表面界面结构和粗糙度;

相似文献

外文文献
中文文献
专利

1. Incommensurate Moire overlayer with strong local binding: CoO(111) bilayer on Ir(100) [J] . C. Troeppner, T. Schmitt, M. Reuschl, Physical review . 2012,第23期

机译：具有强烈的局部结合力的不相称的摩尔纹覆盖层：Ir（100）上的CoO（111）双层
2. Enhancement of exchange bias with crystal orientation in NiFe/CoO and CoO/NiFe bilayers grown on MgO(100) and MgO(111) [J] . R. Topkaya, S. Kazan Journal of magnetism and magnetic materials . 2014,第nova期

机译：在MgO（100）和MgO（111）上生长的NiFe / CoO和CoO / NiFe双层中，随着晶体取向的交换偏压的增强
3. Hydrogen Adsorption on Ir(111), Ir(100) and Ir(111)-Surface and Coverage Dependence [J] . Liu Chunli, Zhu Ling, Wen Xiaodong, Surface Science . 2020,第Feba期

机译：氢在Ir（111），Ir（100）和Ir（111）上的吸附-表面和覆盖率的依赖性
4. Self-poisoning reaction from HCOOH on Pt(n-1)(111)x(110) and Ptn(111)x(100) electrodes modified by irreversibly adsorbed adatoms. [C] . M.D.Macia, E.Ilerrero, J.M.Feliu The Meeting of the Electrochemical Society . 2001

机译：通过不可逆地吸附的adatoms改性的Pt （N-1）（111）（111）×（110）×（110）和Pt N（111）×（100）电极的自中毒反应。
5. Electrochemical and polarization modulation Fourier transform infrared reflection absorption spectroscopic studies of phospholipid bilayers on a gold(111) electrode surface. [D] . Bin, Xiaomin. 2005

机译：电化学和极化调制傅里叶变换红外反射吸收光谱研究金（111）电极表面上的磷脂双层。
6. Structural characterization of S100A15 reveals a novel zinc coordination site among S100 proteins and altered surface chemistry with functional implications for receptor binding [O] . Jill I Murray, Michelle L Tonkin, Amanda L Whiting, 2012

机译：S100A15的结构表征揭示了S100蛋白中一个新的锌配位位点改变了表面化学结构对受体结合具有功能暗示
7. Cover Picture: Assembling Isostructural Metal-Organic Coordination Architectures on Cu(100), Ag(100) and Ag(111) Substrates (ChemPhysChem 17/2008) [O] . Steven L. Tait, Alexander Langner, Nian Lin, 2008

机译：封面图片：Cu（100），AG（100）和AG（111）底座（Chemphyschem 17/2008）组装Isostrontucture Metal-Informal协调架构

Substrate-induced structural modulation of a CoO(111) bilayer on Ir(100)

摘要

著录项

相似文献

相关主题

期刊订阅