Spin-dependent transport in graphene nanostructures:
Saved in:
| Main Author: | |
|---|---|
| Format: | Thesis Book |
| Language: | English |
| Published: |
Regensburg
Univ.-Verl. Regensburg
2014
|
| Edition: | 1. Aufl. |
| Series: | Dissertationsreihe der Fakultät für Physik der Universität Regensburg
42 |
| Subjects: | |
| Online Access: | Volltext https://nbn-resolving.org/urn:nbn:de:bvb:355-epub-309375 Inhaltsverzeichnis |
| Physical Description: | VII, 127 S. Ill., graph. Darst. |
| ISBN: | 9783868451153 |
Staff View
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| 245 | 1 | 0 | |a Spin-dependent transport in graphene nanostructures |c Jan Bundesmann |
| 250 | |a 1. Aufl. | ||
| 264 | 1 | |a Regensburg |b Univ.-Verl. Regensburg |c 2014 | |
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Record in the Search Index
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|---|---|
| adam_text | CONTENTS
1. INTRODUCTION 1
1.1. SPINTRONICS 1
1.2. GRAPHENE 3
1.3. OUTLINE 4
2. MESOSCOPIC TRANSPORT 7
2.1. DEFINING MESOSCOPIC PHYSICS 7
2.2. GREEN S FUNCTIONS 8
2.3. TRANSPORT THROUGH OPEN SYSTEMS 9
2.3.1. SELFENERGIES 9
2.3.2. THE RECURSIVE GREEN S FUNCTION METHOD 11
2.3.3. OPTIMIZED RECURSIVE GREEN S FUNCTION METHOD FOR TRANSMISSION
AT DIFFERENT SYSTEM LENGTHS 12
3. GRAPHENE 15
3.1. GRAPHENE BASICS 15
3.2. TIGHT-BINDING DESCRIPTION 16
3.2.1. ELECTRONS WITHOUT SPIN 16
3.2.2. ELECTRONS WITH SPIN 19
3.3. KLEIN TUNNELING IN THE PRESENCE OF SPIN-ORBIT COUPLING 22
3.4. SUMMARY 25
I. SPIN RELAXATION IN GRAPHENE 27
4. INTRODUCTION 29
5. DP AND EY IN GRAPHENE 31
5.1. THE DYAKONOV-PEREL MECHANISM IN GRAPHENE 31
5.2. ELLIOT-YAFET MECHANISM IN GRAPHENE 36
5.3. SUMMARY 40
6. SHERMAN MECHANISM IN GRAPHENE 43
6.1. SHERMAN SPIN RELAXATION MECHANISM 44
6.2. IMPURITY-INDUCED SPIN-ORBIT COUPLING IN GRAPHENE 45
6.3. NUMERICAL RESULTS 46
6.4. DISCUSSION AND SUMMARY 50
V
HTTP://D-NB.INFO/1054392137
VI CONTENTS
7. ATOMISTIC DESCRIPTION OF ADSORBED ADATOMS 53
7.1. TIGHT-BINDING MODEL FOR ADSORBATES 53
7.2. DOS OF FLUORINATED AND HYDROGENATED GRAPHENE 56
7.3. ADATOMS AND CHARGE TRANSPORT 58
7.4. SPIN RELAXATION IN RANDOM SPIN-ORBIT FIELDS 60
7.4.1. SPIN-DEPENDENT SCATTERING FROM A SINGLE ADATOM 60
7.4.2. SPIN-DEPENDENT SCATTERING FROM A CLUSTER OF ADATOMS 60
7.4.3. ADATOMS IN DIFFUSIVE GRAPHENE 62
7.5. MAGNETIC MOMENT FORMATION 63
7.5.1. SINGLE ADATOM LIMIT 63
7.5.2. RESONANT MAGNETIC SCATTERERS IN DIFFUSIVE GRAPHENE 64
7.6. SUMMARY 69
II. EDGE MAGNETISM IN GRAPHENE 71
8. INTRODUCTION 73
9. MAGNETIC ALIGNMENT WITH DISORDER 75
9.1. HUBBARD MODEL AND HARTREE-FOCK APPROXIMATION 75
9.2. SEARCHING FOR THE MAGNETIC EDGE STATE 76
9.3. ON THE ROUTE TO A PHENOMENOLOGICAL MODEL 78
9.4. USING THE RESULTS FOR TRANSPORT CALCULATIONS 82
10. TRANSPORT CALCULATIONS 87
10.1. FORMALISM 87
10.2. LOCALIZED MESOSCOPIC TRANSPORT 88
10.2.1. DECOMPOSITION 90
10.2.2. AVERAGE VALUES 91
10.3. CONTROLLABLE FINITE SPIN CONDUCTANCE 92
10.4. SUMMARY 93
11. CONCLUSIONS AND PERSPECTIVES 95
11.1. SPIN RELAXATION IN GRAPHENE 95
11.2. ZIGZAG EDGE MAGNETISM 97
11.3. PERSPECTIVES 97
III. APPENDIX 99
A. RECURSIVE GREEN S FUNCTION FORMALISM 101
B. INTERACTIONS 103
B.L. INTERACTING HAMILTONIAN IN SECOND QUANTIZATION FOR UNCORRELATED
ELECTRONSL03
B.2. INTERACTING HAMILTONIAN ON A DISCRETE LATTICE 104
B.3. HUBBARD MODEL IN HARTREE-FOCK APPROXIMATION 105
VI
CONTENTS
VII
B. 1.
CALCULATION SCHEME 108
C. SHERMAN SPIN RELAXATION 109
C.L. CORRELATION FUNCTION OF RASHBA DISORDER 109
C.2. SHERMAN SPIN RELAXATION RATE 112
BIBLIOGRAPHY 113
PUBLICATION LIST 125
DANKSAGUNG 127
|
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| discipline | Physik |
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| spelling | Bundesmann, Jan Verfasser aut Spin-dependent transport in graphene nanostructures Jan Bundesmann 1. Aufl. Regensburg Univ.-Verl. Regensburg 2014 VII, 127 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Dissertationsreihe der Fakultät für Physik der Universität Regensburg 42 Zugl.: Regensburg, Univ., Diss., 2014 Hamilton-Operator (DE-588)4072278-8 gnd rswk-swf Spin (DE-588)4125988-9 gnd rswk-swf Graphen (DE-588)7591667-8 gnd rswk-swf Elektronischer Transport (DE-588)4210733-7 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Graphen (DE-588)7591667-8 s Elektronischer Transport (DE-588)4210733-7 s Spin (DE-588)4125988-9 s Hamilton-Operator (DE-588)4072278-8 s DE-604 Erscheint auch als Online-Ausgabe urn:nbn:de:bvb:355-epub-309375 Dissertationsreihe der Fakultät für Physik der Universität Regensburg 42 (DE-604)BV035566746 42 http://epub.uni-regensburg.de/30937/ Verlag kostenfrei Volltext https://nbn-resolving.org/urn:nbn:de:bvb:355-epub-309375 Resolving-System DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027624099&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Bundesmann, Jan Spin-dependent transport in graphene nanostructures Dissertationsreihe der Fakultät für Physik der Universität Regensburg Hamilton-Operator (DE-588)4072278-8 gnd Spin (DE-588)4125988-9 gnd Graphen (DE-588)7591667-8 gnd Elektronischer Transport (DE-588)4210733-7 gnd |
| subject_GND | (DE-588)4072278-8 (DE-588)4125988-9 (DE-588)7591667-8 (DE-588)4210733-7 (DE-588)4113937-9 |
| title | Spin-dependent transport in graphene nanostructures |
| title_auth | Spin-dependent transport in graphene nanostructures |
| title_exact_search | Spin-dependent transport in graphene nanostructures |
| title_full | Spin-dependent transport in graphene nanostructures Jan Bundesmann |
| title_fullStr | Spin-dependent transport in graphene nanostructures Jan Bundesmann |
| title_full_unstemmed | Spin-dependent transport in graphene nanostructures Jan Bundesmann |
| title_short | Spin-dependent transport in graphene nanostructures |
| title_sort | spin dependent transport in graphene nanostructures |
| topic | Hamilton-Operator (DE-588)4072278-8 gnd Spin (DE-588)4125988-9 gnd Graphen (DE-588)7591667-8 gnd Elektronischer Transport (DE-588)4210733-7 gnd |
| topic_facet | Hamilton-Operator Spin Graphen Elektronischer Transport Hochschulschrift |
| url | http://epub.uni-regensburg.de/30937/ https://nbn-resolving.org/urn:nbn:de:bvb:355-epub-309375 http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027624099&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| volume_link | (DE-604)BV035566746 |
| work_keys_str_mv | AT bundesmannjan spindependenttransportingraphenenanostructures |