Verfügbarkeit: Ultrafast photon-energy dependent magnetization dynamics exploiting the complex Kerr effect

Ultrafast photon-energy dependent magnetization dynamics exploiting the complex Kerr effect:

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Bibliographische Detailangaben
1. Verfasser:	Bierbrauer, Ute 1987- (VerfasserIn)
Format:	Abschlussarbeit Buch
Sprache:	English
Veröffentlicht:	Kaiserslautern 2018
Schlagworte:	Magnetisierung Elektrooptischer Kerr-Effekt Hochschulschrift
Online-Zugang:	Inhaltsverzeichnis Inhaltsverzeichnis
Beschreibung:	Zusammenfassung in deutscher und englischer Sprache
Beschreibung:	xv, 113 Seiten Illustrationen, Diagramme 30 cm

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MARC


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Datensatz im Suchindex

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adam_text	CONTENTS INTRODUCTION IX 1 ULTRAFAST LOSS OF MAGNETIZATION TRIGGERED BY ULTRASHORT LASER P U LS E S ....................... X 2 MAGNETIZATION MANIPULATION BY TAILORED MAGNETIC M A TE RIA LS ................................... XI 3 PHOTON ENERGY-DEPENDENT MAGNETIZATION CONTROL........................................................ XII 4 HEAT-INDUCED MAGNETIZATION RE V E RSA L ......................................................................... XIV 5 SCOPE OF THIS TH E SIS ....................................................................................................... XV 1 THEORY 1 1.1 PHENOMENON OF ULTRAFAST MAGNETIZATION DYNAMICS..................................................... 2 1.2 THEORETICAL APPROACHES TOWARDS ULTRAFAST MAGNETIZATION DYNAMICS .......................... 3 1.2.1 PHENOMENOLOGICAL DESCRIPTION WITH THE THREE-TEINPERATURE MODEL (3TM) . . 3 1.2.2 ATOMISTIC SPIN DYNAMICS.................................................................................. 4 1.2.3 BAND STRUCTURE AND STONER M ODEL.................................................................... 5 1.3 MODELING ULTRAFAST MAGNETIZATION D Y N AM ICS.............................................................. 6 1.3.1 MODELS BASED ON SPIN-FLIP S C A TTE RIN G .............................................................. 7 1.3.2 COHERENT INTERACTIONS ..................................................................................... 12 1.3.3 SUPERDIFFUSIVE SPIN TR A N S P O R T ......................................................................... 12 1.4 MAGNETIZATION REORIENTATION TRIGGERED BY ULTRASHORT LASER P U LSE S ............................. 13 1.4.1 ALL-OPTICAL SW ITCHING........................................................................................ 13 1.4.2 MODEL OF THE INVERSE FARADAY EFFECT (I F E ) ....................................................... 15 1.4.3 IMPACT OF HEATING.............................................................................................. 16 2 MAGNETO-OPTICAL KERR-EFFECT AND ITS EXPERIMENTAL CONFIGURATIONS 17 2.1 ELEMENT-SPECIFIC MAGNETIZATION DETECTION ................................................................... 18 2.2 THE MAGNETO-OPTICAL KERR-EFFECT.................................................................................. 18 2.2.1 PHENOMENON OF THE KERR S IG N A L ...................................................................... 19 2.2.2 THE KERR SIGNAL AS COMPLEX V E C TO R ................................................................. 20 2.2.3 INFORMATION AND PENETRATION D E P TH ................................................................. 21 2.3 EXPERIMENTAL SE TU P ....................................................................................................... 22 2.3.1 LASER AM PLIFIER................................................................................................. 22 2.3.2 OPTICAL BEAM P A T H ........................................................................................... 23 2.3.3 MODULATION M O D E S ........................................................................................... 24 2.3.4 EXTENSION WITH THE C-MOKE TE CH N IQ U E ........................................................ 24 2.4 EVALUATION OF THE ULTRAFAST DEMAGNETIZATION D A T A ..................................................... 25 2.4.1 DRIFT CORRECTION................................................................................................. 25 2.4.2 EVALUATION OF DEMAGNETIZATION TIME AND QUENCHING........................................ 25 2.5 OCCURRENCE OF NON-MAGNETIC OPTICAL RESPONSES........................................................... 26 3 TIME-RESOLVED MAGNETIZATION DYNAMICS OF CRYSTALLINE FEPT:MN 29 3.1 SAMPLE CHARACTERISTICS AND EXPERIMENTAL CONFIGURATIONS ............................................ 30 3.2 FLUENCE-DEPENDENT DEMAGNETIZATION OF FEPT:M N ........................................................ 30 3.2.1 FLUENCE-DEPENDENT MAGNETIZATION TRACES FOR [FEPT]I_XMNX ........................... 30 3.2.2 COMPARISON TO FE-RELATED M ATERIALS................................................................. 34 3.3 EXTRACTING SPECIFIC KERR SIGNALS VIA THE C-MOKE TECH N IQ U E.................................... 38 3.3.1 THE COMPLEX KERR VECTOR IN CRYSTALLINE STRUCTURES ......................................... 38 3.3.2 OBSERVATIONS ON [FEPTJSSMNIS AT HIGH FLUENCES ............................................ 40 3.3.3 COMPARISON WITH ELEMENT-SPECIFIC MEASUREMENT M ETHODS.............................. 42 3.3.4 FLUENCE-DEPENDENT CHANGE OF THE TRANSIENT KERR SIGNALS AT DIFFERENT ANGLES . 44 3.4 S U M M A RY ...................................................................................................................... 49 4 PHOTON DEPENDENT EXCITATION OF NI/AU BILAYER STRUCTURES 51 4.1 SAMPLE CHARACTERISTICS AND SETUP CONFIGURATIONS ........................................................ 52 4.1.1 MANUFACTURING NI/AU BILAYER STRU C TU RE S ........................................................ 52 4.1.2 LIGHT ABSORPTION IN NICKEL AND G O LD ................................................................. 52 4.1.3 SETUP CONFIGURATIONS FOR PHOTON ENERGY-DEPENDENT EXCITATION STUDIES .... 54 4.2 PHOTON ENERGY-DEPENDENT EXCITATION IN THIN NICKEL FILMS ......................................... 55 4.3 PHOTON-DEPENDENT EXCITATION IN BULK-LIKE N IC K E L ........................................................ 56 4.3.1 FLUENCE-DEPENDENT STUDY WITH DIFFERENT PHOTON ENERGY EXCITATIONS ............... 56 4.3.2 APPROACH TO A DEPTH-SENSITIVE STUDY OF BULK-LIKE NICKEL................................. 58 4.4 PHOTON-DEPENDENT EXCITATION IN THINNER NI/AU BILAYER S TRU C TU RE S ........................... 60 4.4.1 FLUENCE-DEPENDENT STUDY WITH DIFFERENT PHOTON ENERGY EXCITATIONS ............... 60 4.4.2 LAYER- AND DEPTH-SENSITIVE MEASUREMENTS ..................................................... 65 4.5 DISCUSSION...................................................................................................................... 67 4.5.1 PHOTON-INDEPENDENT DEMAGNETIZATION PROCESSES IN THIN NICKEL FILM S ............ 67 4.5.2 TRANSPORT EFFECTS IN BULK-LIKE NICKEL................................................................. 67 4.5.3 SPIN DIFFUSION BETWEEN NICKEL AND G O LD ........................................................... 69 4.6 S U M M A RY ...................................................................................................................... 71 5 SIGN CHANGE OF THE MAGNETO-OPTICAL KERR EFFECT IN COBALT-BASED MULTILAYER STRUCTURES 73 5.1 ULTRAFAST MAGNETIZATION DYNAMICS IN SYNTHETIC FERRIM AGNETS ................................... 74 5.1.1 SAMPLE PREPARATION AND SETUP CONFIGURATION .................................................. 74 5.1.2 OBSERVATIONS ON THE ULTRAFAST TIMESCALE ........................................................... 74 5.2 STUDY OF SCM IN FERROMAGNETIC C O / P T ....................................................................... 75 5.2.1 SAMPLE PREPARATION AND SETUP CONFIGURATION .................................................. 75 5.2.2 RESULTS ON FERROMAGNETIC C O /P T....................................................................... 76 5.2.3 EXAMINATION OF THE SCM IN [CO(6AE)/PT(7AE)]X2 ............................................ 77 5.3 SCM IN TB/CO MULTILAYER STRU C TU RE S.......................................................................... 80 5.3.1 SAMPLE PREPARATION AND SETUP CONFIGURATION .................................................. 80 5.3.2 RESULTS ON TB/CO MULTILAYER S TRU C TU RE S ........................................................ 82 5.3.3 COMPARISON TO AMORPHOUS T B C O .................................................................... 83 5.4 S U M M A RY ...................................................................................................................... 86 6 SUMMARY 87 6.1 MAGNETIZATION MANIPULATION BY TAILORED MAGNETIC M A TE RIA LS ................................... 87 6.2 PHOTON ENERGY-DEPENDENT MAGNETIZATION CONTROL ........................................................ 88 6.3 HEAT-INDUCED MAGNETIZATION RE V E RSA L.......................................................................... 88 6.4 CONCLUSION ................................................................................................................... 89 7 OUTLOOK 91 7.1 TAILORED MAGNETIC M ATERIALS........................................................................................ 91 7.2 IMPROVEMENTS ON THE EXPERIMENTAL SETU P ..................................................................... 91 BIBLIOGRAPHY 93 LEBENSLAUF 103 DANKSAGUNG 107
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author	Bierbrauer, Ute 1987-
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spelling	Bierbrauer, Ute 1987- Verfasser (DE-588)1173713123 aut Ultrafast photon-energy dependent magnetization dynamics exploiting the complex Kerr effect Ute Bierbrauer Kaiserslautern 2018 xv, 113 Seiten Illustrationen, Diagramme 30 cm txt rdacontent n rdamedia nc rdacarrier Zusammenfassung in deutscher und englischer Sprache Dissertation Technische Universität Kaiserslautern 2018 Magnetisierung (DE-588)4168580-5 gnd rswk-swf Elektrooptischer Kerr-Effekt (DE-588)4348243-0 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Elektrooptischer Kerr-Effekt (DE-588)4348243-0 s Magnetisierung (DE-588)4168580-5 s DE-604 B:DE-101 application/pdf http://d-nb.info/1176753258/04 Inhaltsverzeichnis DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=030938373&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis
spellingShingle	Bierbrauer, Ute 1987- Ultrafast photon-energy dependent magnetization dynamics exploiting the complex Kerr effect Magnetisierung (DE-588)4168580-5 gnd Elektrooptischer Kerr-Effekt (DE-588)4348243-0 gnd
subject_GND	(DE-588)4168580-5 (DE-588)4348243-0 (DE-588)4113937-9
title	Ultrafast photon-energy dependent magnetization dynamics exploiting the complex Kerr effect
title_auth	Ultrafast photon-energy dependent magnetization dynamics exploiting the complex Kerr effect
title_exact_search	Ultrafast photon-energy dependent magnetization dynamics exploiting the complex Kerr effect
title_full	Ultrafast photon-energy dependent magnetization dynamics exploiting the complex Kerr effect Ute Bierbrauer
title_fullStr	Ultrafast photon-energy dependent magnetization dynamics exploiting the complex Kerr effect Ute Bierbrauer
title_full_unstemmed	Ultrafast photon-energy dependent magnetization dynamics exploiting the complex Kerr effect Ute Bierbrauer
title_short	Ultrafast photon-energy dependent magnetization dynamics exploiting the complex Kerr effect
title_sort	ultrafast photon energy dependent magnetization dynamics exploiting the complex kerr effect
topic	Magnetisierung (DE-588)4168580-5 gnd Elektrooptischer Kerr-Effekt (DE-588)4348243-0 gnd
topic_facet	Magnetisierung Elektrooptischer Kerr-Effekt Hochschulschrift
url	http://d-nb.info/1176753258/04 http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=030938373&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA
work_keys_str_mv	AT bierbrauerute ultrafastphotonenergydependentmagnetizationdynamicsexploitingthecomplexkerreffect

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