Real-Time Manifestation of Strongly Coupled Spin and Charge Order Parameters in Stripe-Ordered La1.75Sr0.25NiO4 Nickelate Crystals Using Time-Resolved Resonant X-Ray Diffraction

被引：47

作者：

Chuang, Y. D. ^{[1
]}

Lee, W. S. ^{[2
]}

Kung, Y. F. ^{[2
]}

Sorini, A. P. ^{[2
,3
]}

Moritz, B. ^{[2
,4
,5
]}

Moore, R. G. ^{[2
]}

Patthey, L. ^{[2
,6
]}

Trigo, M. ^{[2
,7
]}

Lu, D. H. ^{[8
]}

Kirchmann, P. S. ^{[2
]}

Yi, M. ^{[2
]}

Krupin, O. ^{[9
,10
]}

Langner, M. ^{[11
]}

Zhu, Y. ^{[11
]}

Zhou, S. Y. ^{[11
]}

Reis, D. A. ^{[2
,7
]}

Huse, N. ^{[12
]}

Robinson, J. S. ^{[10
]}

Kaindl, R. A. ^{[11
]}

Schoenlein, R. W. ^{[11
]}

Johnson, S. L. ^{[6
]}

Foerst, M. ^{[12
]}

Doering, D. ^{[13
]}

Denes, P. ^{[13
]}

Schlotter, W. F. ^{[10
]}

Turner, J. J. ^{[10
]}

Sasagawa, T. ^{[14
]}

Hussain, Z. ^{[1
]}

Shen, Z. X. ^{[2
]}

Devereaux, T. P. ^{[2
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA

[2] Stanford Inst Mat & Energy Sci, SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA

[3] Lawrence Livermore Natl Lab, Div Phys, Livermore, CA 94550 USA

[4] Univ N Dakota, Dept Phys & Astrophys, Grand Forks, ND 58202 USA

[5] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA

[6] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland

[7] Stanford PULSE Inst, SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA

[8] SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA

[9] European XFEL GmbH, D-22607 Hamburg, Germany

[10] SLAC Natl Accelerator Lab, Linac Coherent Light Source, Berkeley, CA 94720 USA

[11] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA

[12] Univ Hamburg, Ctr Free Electron Laser Sci, Max Planck Dept Struct Dynam, D-22761 Hamburg, Germany

[13] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Engn, Berkeley, CA 94720 USA

[14] Tokyo Inst Technol, Mat & Struct Lab, Kanagawa 2268503, Japan

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 12期

关键词：

EXCITATIONS; LA2-XSRXNIO4; SCATTERING;

D O I：

10.1103/PhysRevLett.110.127404

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the order parameter dynamics of the stripe-ordered nickelate, La1.75Sr0.25NiO4, using time-resolved resonant x-ray diffraction. In spite of distinct spin and charge energy scales, the two order parameters' amplitude dynamics are found to be linked together due to strong coupling. Additionally, the vector nature of the spin sector introduces a longer reorientation time scale which is absent in the charge sector. These findings demonstrate that the correlation linking the symmetry-broken states does not unbind during the nonequilibrium process, and the time scales are not necessarily associated with the characteristic energy scales of individual degrees of freedom. DOI. 10.1103/PhysRevLett.110.127404

引用

页数：5