Time-resolved x-ray photoelectron spectroscopy at FLASH

被引：62

作者：

Hellmann, S. ^{[1
]}

Sohrt, C. ^{[1
]}

Beye, M. ^{[2
]}

Rohwer, T. ^{[1
]}

Sorgenfrei, F. ^{[2
]}

Marczynski-Buehlow, M. ^{[1
]}

Kallaene, M. ^{[1
]}

Redlin, H. ^{[3
,4
]}

Hennies, F. ^{[5
]}

Bauer, M. ^{[1
]}

Foehlisch, A. ^{[2
]}

Kipp, L. ^{[1
]}

Wurth, W. ^{[2
]}

Rossnagel, K. ^{[1
]}

机构：

[1] Univ Kiel, Inst Expt & Appl Phys, D-24098 Kiel, Germany

[2] Univ Hamburg, Inst Expt Phys, D-22761 Hamburg, Germany

[3] Univ Hamburg, Ctr Free Electron Laser Sci, D-22761 Hamburg, Germany

[4] DESY, D-22607 Hamburg, Germany

[5] Lund Univ, Max Lab, Lund, Sweden

来源：

NEW JOURNAL OF PHYSICS | 2012年 / 14卷

关键词：

CHARGE-DENSITY-WAVE; ELECTRONIC-STRUCTURE; MONOCHROMATOR BEAMLINE; PHASE-TRANSITION; PHOTOEMISSION; 1T-TAS2; DYNAMICS; GENERATION; ENERGY; STATES;

D O I：

10.1088/1367-2630/14/1/013062

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The technique of time-resolved pump-probe x-ray photoelectron spectroscopy using the free-electron laser in Hamburg (FLASH) is described in detail. Particular foci lie on the macrobunch resolving detection scheme, the role of vacuum space-charge effects and the synchronization of pump and probe lasers. In an exemplary case study, the complete Ta 4f core-level dynamics in the layered charge-density-wave (CDW) compound 1T-TaS2 in response to impulsive optical excitation is measured on the sub-picosecond to nanosecond timescale. The observed multi-component dynamics is related to the intrinsic melting and reformation of the CDW as well as to extrinsic pump-laser-induced vacuum space-charge effects.

引用

页数：26

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