Structure and magnetism in ultra-thin hcp Fe films on Re(0001)

被引：0

作者：

Santos Burgos, B. ^{[1
,2
,3
]}

Iribas Cerda, Jorge ^{[4
]}

Puerta, J. M. ^{[4
]}

Lopez-Martin, R. ^{[1
,2
]}

De Toro, J. A. ^{[1
,2
]}

Peddis, Davide ^{[3
]}

Binns, C. ^{[1
,2
]}

机构：

[1] Univ Castilla La Mancha, Inst Reg Invest Cient Aplicada IRICA, E-13071 Ciudad Real, Spain

[2] Univ Castilla La Mancha, Dept Fis Aplicada, E-13071 Ciudad Real, Spain

[3] Univ Genoa, Dept Chem & Ind Chem, Nanostruct Magnet Mat Lab, Via Dodecaneso 31, I-16146 Genoa, Italy

[4] Inst Ciencia Mat Madrid, CSIC, Madrid 28049, Spain

来源：

SURFACES AND INTERFACES | 2022年 / 30卷

关键词：

LEEM; LEED-IV; XMCD; XMLD; hcp iron; Hexagonal iron; FINITE-SIZE; 111; FCC; GROWTH; TRANSITION; RELAXATION; THICKNESS; SURFACE; IRON; NUCLEATION; CU(100);

D O I：

10.1016/j.surfin.2022.101892

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have characterized the structure and the magnetic properties of ultra-thin Fe films (1-6 atomic layers) grown on Re(0001) at different temperatures. For deposition temperatures above 475 K, low-energy electron microscopy shows a layer-by-layer growth up to the third layer, after which 3D growth is observed. The first Fe layer is pseudomorphic with the Re substrate, continuing its hcp stacking sequence. Subsequent atomic layers were found by low-energy electron diffraction (LEED) and IV-LEED to exhibit a quasi-hexagonal, or distorted bcc lattice, with this in-plane distortion progressively reducing with thickness till reaching the bulk bcc lattice at 10 Fe atomic layers. X-ray magnetic dichroism showed no contrast for the first two layers, whereas films of three or more atomic layers display in-plane ferromagnetic order.

引用

页数：9

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