The interplay of local electron correlations and ultrafast spin dynamics in fcc Ni

被引：10

作者：

Lojewski, Tobias ^{[1
]}

Elhanoty, Mohamed F. ^{[2
]}

Le Guyader, Loic ^{[3
]}

Granaes, Oscar ^{[2
]}

Agarwal, Naman ^{[3
]}

Boeglin, Christine ^{[4
,5
]}

Carley, Robert ^{[3
]}

Castoldi, Andrea ^{[6
,7
]}

David, Christian ^{[8
]}

Deiter, Carsten ^{[3
]}

Doering, Florian ^{[8
]}

Engel, RobinY ^{[9
]}

Erdinger, Florian ^{[10
]}

Fangohr, Hans ^{[3
,11
]}

Fiorini, Carlo ^{[6
,7
]}

Fischer, Peter ^{[10
]}

Gerasimova, Natalia ^{[3
]}

Gort, Rafael ^{[3
]}

deGroot, Frank

Hansen, Karsten ^{[9
]}

Hauf, Steffen

Hickin, David ^{[3
]}

Izquierdo, Manuel ^{[3
]}

Van Kuiken, Benjamin E. ^{[3
]}

Kvashnin, Yaroslav

Lambert, Charles-Henri

Lomidze, David

Maffessanti, Stefano ^{[9
]}

Mercadier, Laurent

Mercurio, Giuseppe

Miedema, Piter S. ^{[9
]}

Ollefs, Katharina ^{[1
]}

Pace, Matthias ^{[4
,5
]}

Porro, Matteo

Rezvani, Javad

Roesner, Benedikt ^{[8
]}

Rothenbach, Nico ^{[1
]}

Samartsev, Andrey ^{[3
,9
]}

Scherz, Andreas ^{[3
]}

Schlappa, Justina ^{[3
]}

Stamm, Christian

Teichmann, Martin ^{[3
]}

Thunstrom, Patrik

Turcato, Monica ^{[3
,4
]}

Yaroslavtsev, Alexander ^{[2
,3
,4
]}

Zhu, Jun ^{[3
,4
]}

Beye, Martin ^{[9
]}

Wende, Heiko ^{[1
]}

Bovensiepen, Uwe ^{[1
]}

Eriksson, Olle ^{[2
]}

机构：

[1] Univ Duisburg Essen, Fac Phys, Duisburg, Germany

[2] Univ Duisburg Essen, Ctr Nanointegrat Duisburg Essen CENIDE, Duisburg, Germany

[3] Uppsala Univ, Dept Phys & Astron, Uppsala, Sweden

[4] European XFEL, Schenefeld, Germany

[5] Univ Strasbourg, Inst Phys & Chimiedes Mat Strasbourg, CNRS, Strasbourg, France

[6] Politecn Milan, Dipartimento Elettron Informaz & Bioingn, Milan, Italy

[7] Ist Nazl Fis Nucl, Sez Milano, Milan, Italy

[8] Paul Scherrer Inst, Villigen PSI, Wurenlingen, Switzerland

[9] Deutsch Elektronen Synchrotron DESY, Hamburg, Germany

[10] Heidelberg Univ, Inst Comp Engn, Heidelberg, Germany

[11] Max Planck Inst Struct & Dynam Matter, Hamburg, Germany

[12] Univ Duisburg Essen, Fac Phys, Ctr Nanointegrat Duisburg Essen CENIDE, Lotharstr 1, D-47057 Duisburg, Germany

来源：

MATERIALS RESEARCH LETTERS | 2023年 / 11卷 / 08期

基金：

瑞典研究理事会; 欧洲研究理事会;

关键词：

Ferromagnetism; local correlations; ultrafast dynamics; time-resolved x-ray absorption spectroscopy; time-dependent density functional theory; ANGULAR-MOMENTUM;

D O I：

10.1080/21663831.2023.2210606

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The complex electronic structure of metallic ferromagnets is determined by a balance between exchange interaction, electron hopping leading to band formation, and local Coulomb repulsion. By combining high energy and temporal resolution in femtosecond time-resolved X-ray absorption spectroscopy with ab initio time-dependent density functional theory we analyze the electronic structure in fcc Ni on the time scale of these interactions in a pump-probe experiment. We distinguish transient broadening and energy shifts in the absorption spectra, which we demonstrate to be captured by electron repopulation respectively correlation-induced modifications of the electronic structure, requiring to take the local Coulomb interaction into account.

引用

页码：655 / 661

页数：7

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