Electron-vibron effects in interacting quantum dot systems:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
2012
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| Schlagworte: | |
| Online-Zugang: | Volltext https://nbn-resolving.org/urn:nbn:de:bvb:355-epub-254734 Inhaltsverzeichnis |
| Beschreibung: | 137 S. Ill., graph. Darst. |
Internformat
MARC
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| 001 | BV040323908 | ||
| 003 | DE-604 | ||
| 005 | 20121214 | ||
| 007 | t | ||
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| 035 | |a (DE-599)BVBBV040323908 | ||
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| 245 | 1 | 0 | |a Electron-vibron effects in interacting quantum dot systems |c vorgelegt von Abdullah Yar |
| 264 | 1 | |c 2012 | |
| 300 | |a 137 S. |b Ill., graph. Darst. | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 502 | |a Regensburg, Univ., Diss., 2012 | ||
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| 856 | 4 | 1 | |u http://epub.uni-regensburg.de/25473/ |x Verlag |z kostenfrei |3 Volltext |
| 856 | 4 | |u https://nbn-resolving.org/urn:nbn:de:bvb:355-epub-254734 |x Resolving-System | |
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| 912 | |a ebook | ||
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Datensatz im Suchindex
| _version_ | 1804149352614068224 |
|---|---|
| adam_text | IMAGE 1
CONTENTS
1 INTRODUCTION 7
1.1 NEMS 7
1.1.1 NANOSCALE RESONATOR 8
1.1.2 NEM MEMORY CELL 8
1.1.3 QUANTUM SHUTTLE DEVICE 10
1.2 NEMS IN MOLECULAR ELECTRONICS 12
1.3 NEMS ATTRIBUTES IN SPINTRONICS 12
1.4 THESIS OUTLINE 13
2 VIBRATION-MEDIATED TRANSPORT T H E O R Y O F Q U A N T U M D O T S 1 7
2.1 QUANTUM DOTS 18
2.2 ELECTRON-VIBRON INTERACTION EFFECTS 19
2.3 SEQUENTIAL TUNNELING AND COULOMB BLOCKADE 20
2.4 DISCRETE ENERGY SPECTRUM 22
2.5 FRANCK-CONDON BLOCKADE 23
2.6 GENERALIZED MASTER EQUATION 26
2.7 MODEL HAMILTONIAN 27
2.8 DYNAMICS OF THE REDUCED DENSITY MATRIX 27
2.9 ROLE OF COHERENCES AND SECULAR APPROXIMATION 31
2.10 CURRENT 35
3 VIBRATION-ASSISTED TRANSPORT THROUGH NANOSTRUCTURES 3 7
3.1 MODEL HAMILTONIAN FOR THE CENTRAL SYSTEM 38
3.1.1 ELIMINATION OF ELECTRON-VIBRON INTERACTION . . . 38
3.2 GENERALIZED MASTER EQUATION FOR UNPOLARIZED QUANTUM DOTS 40
3.3 TRANSITION MATRIX ELEMENTS OF ELECTRON OPERATORS AND THE TRANSITION
RATES 40 3.4 TRANSPORT CALCULATIONS 42
3.5 SYMMETRIC SETUP 42
3.5.1 CURRENT-VOLTAGE CHARACTERISTICS A T LOW BIAS WITH ZERO BAND MIS
MATCH : 42
3.5.2 CURRENT-VOLTAGE CHARACTERISTICS A T LOW BIAS WITH FINITE BAND MIS
MATCH 47
3.6 ASYMMETRIC SETUP 51
HTTP://D-NB.INFO/1024867382
IMAGE 2
6 I CONTENTS
3.6.1 EFFECT OF AN ASYMMETRIC COUPLING OF THE DIFFERENT ORBITAL STATES
TO THE LEADS 51
3.6.2 EFFECT OF THE ASYMMETRIC COUPLING TO THE LEFT AND RIGHT LEAD . . .
53
4 VIBRATION INDUCED M E M O R Y EFFECTS A N D SWITCHING I N AC-DRIVEN
MOLEC ULAR NANOJUNCTIONS 5 9
4.1 THE MODEL . . . * 59
4.1.1 DIAGONALIZATION OF THE SYSTEM HAMILTONIAN 60
4.2 SEQUENTIAL TRANSPORT 61
4.2.1 TIME DEPENDENT MASTER EQUATION 62
4.3 LIFETIMES AND BISTABILITY OF STATES 66
4.4 QUANTUM SWITCHING AND HYSTERESIS : 71
4.4.1 MEMORY EFFECTS IN THE CURRENT-VOLTAGE CHARACTERISTICS 74
4.4.2 ROLE OF VIBRON ENERGY IN MEMORY ATTRIBUTES 75
4.5 TESTING LOWER DRIVING FREQUENCIES 77
4.6 THE DC-CASE {U - 0) 79
4.6.1 CURRENT-VOLTAGE CHARACTERISTICS FOR THE DC-CASE 83
5 ELECTRONIC B A N D STRUCTURE O F S W C N T S 8 9
5.1 ELECTRONIC BAND STRUCTURE OF GRAPHENE 89
5.2 FROM GRAPHENE TO CARBON NANOTUBE 94
5.3 LOW ENERGY THEORY OF ARMCHAIR METALLIC SWCNTS 96
5.3.1 ARMCHAIR METALLIC SWCNTS AT LOW ENERGIES 96
5.3.2 HAMILTONIAN OF METALLIC ARMCHAIR SWCNTS 97
5.4 VIBRATIONAL MODES IN SWCNTS 98
5.4.1 LONGITUDINAL STRETCHING MODE 98
5.4.2 RADIAL BREATHING MODE . . .- 99
5.4.3 TWIST MODE 100
5.4.4 BENDING MODE 100
6 SPECTRUM A N D FRANCK-CONDON FACTORS O F INTERACTING S U S P E N D E D
S W C N T S 103
6.1 SUSPENDED SWCNTS A T LOW-ENERGY 103
6.1.1 COULOMB INTERACTION IN SWCNTS 104
6.1.2 VIBRON HAMILTONIAN 105
6.1.3 ELECTRON-VIBRON INTERACTION HAMILTONIAN 106
6.2 COUPLING MECHANISMS IN SUSPENDED SWCNTS 108
6.2.1 PLASMON-VIBRON COUPLINGS 109
6.2.2 CHARGE-VIBRON COUPLINGS I L L
6.3 DIAGONALIZATION AND SPECTRUM 112
6.4 TUNNELING AMPLITUDES AND FRANCK-CONDON COUPLINGS 116
7 CONCLUSIONS 125
|
| any_adam_object | 1 |
| author | Yar, Abdullah |
| author_facet | Yar, Abdullah |
| author_role | aut |
| author_sort | Yar, Abdullah |
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| building | Verbundindex |
| bvnumber | BV040323908 |
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| dewey-full | 537.622 |
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| dewey-ones | 537 - Electricity and electronics |
| dewey-raw | 537.622 |
| dewey-search | 537.622 |
| dewey-sort | 3537.622 |
| dewey-tens | 530 - Physics |
| discipline | Physik |
| format | Thesis Book |
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| indexdate | 2024-07-10T00:21:40Z |
| institution | BVB |
| language | English |
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| physical | 137 S. Ill., graph. Darst. |
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| spelling | Yar, Abdullah Verfasser aut Electron-vibron effects in interacting quantum dot systems vorgelegt von Abdullah Yar 2012 137 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Regensburg, Univ., Diss., 2012 Quantenpunkt (DE-588)4263396-5 gnd rswk-swf Elektronenwechselwirkung (DE-588)4508857-3 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Quantenpunkt (DE-588)4263396-5 s Elektronenwechselwirkung (DE-588)4508857-3 s DE-604 Erscheint auch als Online-Ausgabe urn:nbn:de:bvb:355-epub-254734 http://epub.uni-regensburg.de/25473/ Verlag kostenfrei Volltext https://nbn-resolving.org/urn:nbn:de:bvb:355-epub-254734 Resolving-System DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025178472&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Yar, Abdullah Electron-vibron effects in interacting quantum dot systems Quantenpunkt (DE-588)4263396-5 gnd Elektronenwechselwirkung (DE-588)4508857-3 gnd |
| subject_GND | (DE-588)4263396-5 (DE-588)4508857-3 (DE-588)4113937-9 |
| title | Electron-vibron effects in interacting quantum dot systems |
| title_auth | Electron-vibron effects in interacting quantum dot systems |
| title_exact_search | Electron-vibron effects in interacting quantum dot systems |
| title_full | Electron-vibron effects in interacting quantum dot systems vorgelegt von Abdullah Yar |
| title_fullStr | Electron-vibron effects in interacting quantum dot systems vorgelegt von Abdullah Yar |
| title_full_unstemmed | Electron-vibron effects in interacting quantum dot systems vorgelegt von Abdullah Yar |
| title_short | Electron-vibron effects in interacting quantum dot systems |
| title_sort | electron vibron effects in interacting quantum dot systems |
| topic | Quantenpunkt (DE-588)4263396-5 gnd Elektronenwechselwirkung (DE-588)4508857-3 gnd |
| topic_facet | Quantenpunkt Elektronenwechselwirkung Hochschulschrift |
| url | http://epub.uni-regensburg.de/25473/ https://nbn-resolving.org/urn:nbn:de:bvb:355-epub-254734 http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025178472&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| work_keys_str_mv | AT yarabdullah electronvibroneffectsininteractingquantumdotsystems |