eprintid: 14312
rev_number: 11
eprint_status: archive
userid: 288
dir: disk0/00/01/43/12
datestamp: 2013-01-16 09:20:55
lastmod: 2013-02-25 08:23:14
status_changed: 2013-01-16 09:20:55
type: doctoralThesis
metadata_visibility: show
creators_name: Zhong, Yinpeng
title: Ultrafast Dynamics in Polar and Magnetic Semiconductors:
Optical and Free-Electron Laser Investigations
subjects: ddc-530
divisions: i-851330
adv_faculty: af-13
abstract: The ultrafast carrier and lattice dynamics in polar and ferromagnetic semiconductors were investigated using optical and X-ray free-electron laser. In polar semiconductor Li-doped CdTe, the influence of Coulomb screening and phonon-plasmon coupling in carrier and lattice dynamics was observed by means of a time resolved pump-probe reflectivity technique. When doping polar semiconductors with magnetic atoms, magnetic interactions are introduced, e.g., in ferromagnetic semiconductor Ga$_{1-x}$Mn$_{x}$As, the Mn doped GaAs. By applying the novel X-ray free-electron laser radiation, delivered by the Linac Coherent Light Source (LCLS), the time resolved X-ray diffraction was measured, which directly reveals the interplay between the laser excited carriers, acoustic phonon modes and spin order. Simultaneously, the evolution of hole quasi Fermi-level as a function of time and temperature was measured by the resonant X-ray emission spectroscopy.
date: 2013-01
id_scheme: DOI
id_number: 10.11588/heidok.00014312
ppn_swb: 165204941X
own_urn: urn:nbn:de:bsz:16-heidok-143120
date_accepted: 2012-12-20
advisor: HASH(0x559e37bac3b8)
language: eng
bibsort: ZHONGYINPEULTRAFASTD201301
full_text_status: public
citation:   Zhong, Yinpeng  (2013) Ultrafast Dynamics in Polar and Magnetic Semiconductors: Optical and Free-Electron Laser Investigations.  [Dissertation]     
document_url: https://archiv.ub.uni-heidelberg.de/volltextserver/14312/1/thesis%28Yinpeng%20Zhong%29.pdf