EuO and Eu on metal crystals and graphene: interface effects and epitaxial films:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
München
Dr. Hut
2012
|
| Ausgabe: | 1. Aufl. |
| Schriftenreihe: | Physik
|
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | VIII, 199 S. Ill., graph. Darst. 297 mm x 210 mm, 637 g |
| ISBN: | 9783843902847 3843902844 |
Internformat
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| 245 | 1 | 0 | |a EuO and Eu on metal crystals and graphene: interface effects and epitaxial films |c Daniel F. Förster |
| 250 | |a 1. Aufl. | ||
| 264 | 1 | |a München |b Dr. Hut |c 2012 | |
| 300 | |a VIII, 199 S. |b Ill., graph. Darst. |c 297 mm x 210 mm, 637 g | ||
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Datensatz im Suchindex
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| adam_text | Titel: EuO and Eu on metal crystals and graphene: interface effects and epitaxial films
Autor: Förster, Daniel F.
Jahr: 2012
Contents
Abstract i
Table of Contents iii
Frequently used symbols vii
1 Introduction 1
2 Background 3
2.1 EuO - a manifold material................................. 3
2.1.1 Electronic structure................................ 4
2.1.2 N-Doping...................................... 5
2.1.3 Surface State.................................... 6
2.1.4 Thin Films..................................... 7
2.2 Surface oxides........................................ 8
2.3 Polar oxide surfaces .................................... 9
2.4 Graphene.......................................... 12
2.4.1 Electronic Properties................................ 12
2.4.2 Graphene on Ir(l 11)................................ 13
2.4.3 Adsorption..................................... 15
2.4.4 Intercalation .................................... 16
3 Experimental Setup 19
3.1 UHV system Athene.................................... 19
3.1.1 Sample Holder and Base Plate.......................... 20
3.1.2 MBE station.................................... 23
3.2 The hedgehog STM..................................... 25
3.2.1 Etching of Ir Tips................................. 27
4 Experimental procedures 29
4.1 Sample preparation..................................... 29
4.1.1 Ni(100) ....................................... 29
4.1.2 Ir(100)........................................ 29
4.1.3 Ir(lll)........................................ 30
4.1.4 Graphene on Ir(lll)................................ 30
4.2 Film growth......................................... 31
4.2.1 Gas Inlet Calibration................................ 31
4.2.2 Evaporation..................................... 32
4.2.3 EuO growth..................................... 32
4.3 Scanning tunnelling microscopy and spectroscopy.................... 33
4.3.1 The one dimensional tunnelling barrier...................... 33
4.3.2 dl/dU measurements ............................... 35
4.3.3 Field Emission Resonances (FERs)........................ 38
4.3.4 I(s) measurements................................. 39
4.4 Low energy electron diffraction.............................. 40
5 EuO on Ni(100) 41
5.1 The surface oxides..................................... 41
5.1.1 EuO(lll)...................................... 43
5.1.2 Stripe islands.................................... 47
5.1.3 Clusters....................................... 51
5.1.4 p(5x5) superstructure............................... 55
5.2 2.5 Monolayers and beyond................................ 58
5.2.1 Initial growth of EuO(lOO) films......................... 59
5.2.2 Annealing in Eu vapour.............................. 64
5.2.3 100 nm thick EuO(lOO) films........................... 65
5.2.4 Epitaxial strain................................... 69
5.3 Summary.......................................... 71
6 EuO on Iridium 73
6.1 EuO on Ir(lll)....................................... 73
6.1.1 Film thickness dependence ............................ 74
6.1.2 Flux ratio dependence............................... 79
6.1.3 Work function of the polar EuO(l 11) ...................... 82
6.1.4 Temperature dependence ............................. 84
6.2 EuO on Ir(100)....................................... 87
6.3 Summary.......................................... 89
7 EuO on graphene on Ir(lll) 91
7.1 Morphology of the EuO grains .............................. 91
7.2 Spectroscopy........................................ 96
7.3 Summary.......................................... 99
8 Eu on and intercalated under graphene on Ir(lll) 101
8.1 Eu intercalate patterns oriented along the graphene moire............... 102
8.1.1 Chemical stability of intercalated Eu....................... 104
8.1.2 Intercalate structures ............................... 104
8.1.3 Intercalate patterns ................................ 108
8.1.4 Graphene doping.................................. 113
8.2 Eu on Graphene ...................................... 117
8.2.1 Eu adsorption at 35K............................... 117
8.2.2 Room temperature Eu adsorption ........................ 120
8.2.3 Annealing...................................... 123
8.2.4 DFT Results.................................... 124
8.2.5 Discussion...................................... 128
8.3 Work function comparisons................................ 134
8.4 Summary.......................................... 137
9 Summary and outlook 139
9.1 Summary..........................................139
9.2 Outlook...........................................142
References 145
A Eu adsorption on Ir(lll) 169
A.l Eu adsorbate structures on Ir(lll)............................169
B Construction plans 173
C Publications 193
D Kurzzusammenfassung 195
Acknowledgements 197
Offizielle Erklarung 199
|
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| indexdate | 2024-07-10T00:14:03Z |
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| isbn | 9783843902847 3843902844 |
| language | English |
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| physical | VIII, 199 S. Ill., graph. Darst. 297 mm x 210 mm, 637 g |
| publishDate | 2012 |
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| publisher | Dr. Hut |
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| spelling | Förster, Daniel F. Verfasser (DE-588)1019576278 aut EuO and Eu on metal crystals and graphene: interface effects and epitaxial films Daniel F. Förster 1. Aufl. München Dr. Hut 2012 VIII, 199 S. Ill., graph. Darst. 297 mm x 210 mm, 637 g txt rdacontent n rdamedia nc rdacarrier Physik Zugl.: Köln, Univ., Diss., 2011 (DE-588)4113937-9 Hochschulschrift gnd-content HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=024773940&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Förster, Daniel F. EuO and Eu on metal crystals and graphene: interface effects and epitaxial films |
| subject_GND | (DE-588)4113937-9 |
| title | EuO and Eu on metal crystals and graphene: interface effects and epitaxial films |
| title_auth | EuO and Eu on metal crystals and graphene: interface effects and epitaxial films |
| title_exact_search | EuO and Eu on metal crystals and graphene: interface effects and epitaxial films |
| title_full | EuO and Eu on metal crystals and graphene: interface effects and epitaxial films Daniel F. Förster |
| title_fullStr | EuO and Eu on metal crystals and graphene: interface effects and epitaxial films Daniel F. Förster |
| title_full_unstemmed | EuO and Eu on metal crystals and graphene: interface effects and epitaxial films Daniel F. Förster |
| title_short | EuO and Eu on metal crystals and graphene: interface effects and epitaxial films |
| title_sort | euo and eu on metal crystals and graphene interface effects and epitaxial films |
| topic_facet | Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=024773940&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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