Quasiparticle Mass Enhancement and Temperature Dependence of the Electronic Structure of Ferromagnetic SrRuO3 Thin Films

被引：96

作者：

Shai, D. E. ^{[1
]}

Adamo, C. ^{[2
]}

Shen, D. W. ^{[1
,2
,3
]}

Brooks, C. M. ^{[2
,4
]}

Harter, J. W. ^{[1
]}

Monkman, E. J. ^{[1
]}

Burganov, B. ^{[1
]}

Schlom, D. G. ^{[2
,5
]}

Shen, K. M. ^{[1
,5
]}

机构：

[1] Cornell Univ, Dept Phys, Lab Atom & Solid State Phys, Ithaca, NY 14853 USA

[2] Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA

[3] Chinese Acad Sci, Superconductor Applicat State Key Lab Funct Mat I, Shanghai 200050, Peoples R China

[4] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA

[5] Kavli Inst Cornell Nanoscale Sci, Ithaca, NY 14853 USA

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 08期

基金：

美国国家科学基金会;

关键词：

MAGNETIC-PROPERTIES; TRANSPORT; CARUO3;

D O I：

10.1103/PhysRevLett.110.087004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report high-resolution angle-resolved photoemission studies of epitaxial thin films of the correlated 4d transition metal oxide ferromagnet SrRuO3. The Fermi surface in the ferromagnetic state consists of well-defined Landau quasiparticles exhibiting strong coupling to low-energy bosonic modes which contributes to the large effective masses observed by transport and thermodynamic measurements. Upon warming the material through its Curie temperature, we observe a substantial decrease in quasiparticle coherence but negligible changes in the ferromagnetic exchange splitting, suggesting that local moments play an important role in the ferromagnetism in SrRuO3. DOI: 10.1103/PhysRevLett.110.087004

引用

页数：5

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