Femtosecond Dynamics of Momentum-Dependent Magnetic Excitations from Resonant Inelastic X-Ray Scattering in CaCu2O3

被引：23

作者：

Bisogni, Valentina ^{[1
,2
]}

Kourtis, Stefanos ^{[1
]}

Monney, Claude ^{[2
,3
]}

Zhou, Kejin ^{[2
]}

Kraus, Roberto ^{[1
]}

Sekar, Chinnathambi ^{[1
]}

Strocov, Vladimir ^{[2
]}

Buechner, Bernd ^{[1
,4
]}

van den Brink, Jeroen ^{[1
,4
]}

Braicovich, Lucio ^{[5
,6
]}

Schmitt, Thorsten ^{[2
]}

Daghofer, Maria ^{[1
]}

Geck, Jochen ^{[1
]}

机构：

[1] Leibniz Inst Solid State & Mat Res IFW Dresden, D-01069 Dresden, Germany

[2] Paul Scherrer Inst, Res Dept Synchrotron Radiat & Nanotechnol, CH-5232 Villigen, Switzerland

[3] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

[4] Tech Univ Dresden, Dept Phys, D-1062 Dresden, Germany

[5] CNR, SPIN, CNISM, I-20133 Milan, Italy

[6] Politecn Milan, Dipartimento Fis, I-20133 Milan, Italy

来源：

PHYSICAL REVIEW LETTERS | 2014年 / 112卷 / 14期

基金：

瑞士国家科学基金会;

关键词：

LEVEL PHOTOEMISSION SPECTRA; CHARGE-TRANSFER; CU; PHOTOELECTRON; 2P; SPECTROSCOPY; LA2CUO4; AUGER;

D O I：

10.1103/PhysRevLett.112.147401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Taking spinon excitations in the quantum antiferromagnet CaCu2O3 as an example, we demonstrate that femtosecond dynamics of magnetic electronic excitations can be probed by direct resonant inelastic x-ray scattering (RIXS). To this end, we isolate the contributions of single and double spin-flip excitations in experimental RIXS spectra, identify the physical mechanisms that cause them, and determine their respective time scales. By comparing theory and experiment, we find that double spin flips need a finite amount of time to be generated, rendering them sensitive to the core-hole lifetime, whereas single spin flips are, to a very good approximation, independent of it. This shows that RIXS can grant access to time-domain dynamics of excitations and illustrates how RIXS experiments can distinguish between excitations in correlated electron systems based on their different time dependence.

引用

页数：6

共 48 条

[1] Resonant inelastic x-ray scattering studies of elementary excitations [J].

Ament, Luuk J. P. ;

van Veenendaal, Michel ;

Devereaux, Thomas P. ;

Hill, John P. ;

van den Brink, Jeroen .

REVIEWS OF MODERN PHYSICS, 2011, 83 (02) :705-767

[2] Theoretical Demonstration of How the Dispersion of Magnetic Excitations in Cuprate Compounds can be Determined Using Resonant Inelastic X-Ray Scattering [J].

Ament, Luuk J. P. ;

Ghiringhelli, Giacomo ;

Moretti Sala, Marco ;

Braicovich, Lucio ;

van den Brink, Jeroen .

PHYSICAL REVIEW LETTERS, 2009, 103 (11)

[3]

[Anonymous], UNOCCUPIED ELECT STA

[4] Bimagnon studies in cuprates with resonant inelastic x-ray scattering at the O K edge. I. Assessment on La2CuO4 and comparison with the excitation at Cu L3 and Cu K edges [J].

Bisogni, V. ;

Simonelli, L. ;

Ament, L. J. P. ;

Forte, F. ;

Sala, M. Moretti ;

Minola, M. ;

Huotari, S. ;

van den Brink, J. ;

Ghiringhelli, G. ;

Brookes, N. B. ;

Braicovich, L. .

PHYSICAL REVIEW B, 2012, 85 (21)

[5] From nanosecond to femtosecond science [J].

Bloembergen, N .

REVIEWS OF MODERN PHYSICS, 1999, 71 (02) :S283-S287

[6] Electronic structure of CaCu2O3:: Spin ladder versus one-dimensional spin chain -: art. no. 045108 [J].

Bordas, E ;

de Graaf, C ;

Caballol, R ;

Calzado, CJ .

PHYSICAL REVIEW B, 2005, 71 (04)

[7] Momentum and polarization dependence of single-magnon spectral weight for Cu L3-edge resonant inelastic x-ray scattering from layered cuprates [J].

Braicovich, L. ;

Moretti Sala, M. ;

Ament, L. J. P. ;

Bisogni, V. ;

Minola, M. ;

Balestrino, G. ;

Di Castro, D. ;

De Luca, G. M. ;

Salluzzo, M. ;

Ghiringhelli, G. ;

van den Brink, J. .

PHYSICAL REVIEW B, 2010, 81 (17)

[8] Magnetic Excitations and Phase Separation in the Underdoped La2-xSrxCuO4 Superconductor Measured by Resonant Inelastic X-Ray Scattering [J].

Braicovich, L. ;

van den Brink, J. ;

Bisogni, V. ;

Moretti Sala, M. ;

Ament, L. J. P. ;

Brookes, N. B. ;

De Luca, G. M. ;

Salluzzo, M. ;

Schmitt, T. ;

Strocov, V. N. ;

Ghiringhelli, G. .

PHYSICAL REVIEW LETTERS, 2010, 104 (07)

[9] Rationale for femtosecond magnetism explored with x-ray core-hole excitation [J].

Braicovich, L. ;

van der Laan, G. .

PHYSICAL REVIEW B, 2008, 78 (17)

[10] Dispersion of Magnetic Excitations in the Cuprate La2CuO4 and CaCuO2 Compounds Measured Using Resonant X-Ray Scattering [J].

Braicovich, L. ;

Ament, L. J. P. ;

Bisogni, V. ;

Forte, F. ;

Aruta, C. ;

Balestrino, G. ;

Brookes, N. B. ;

De Luca, G. M. ;

Medaglia, P. G. ;

Granozio, F. Miletto ;

Radovic, M. ;

Salluzzo, M. ;

van den Brink, J. ;

Ghiringhelli, G. .

PHYSICAL REVIEW LETTERS, 2009, 102 (16)

← 1 2 3 4 5 →