Two-dimensional electron systems in atomically precise periodic potentials:
Gespeichert in:
| 1. Verfasser: | |
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| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
2001
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| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | München, Techn. Univ., Diss., 2001 |
| Beschreibung: | IV, 211 S. Ill., graph. Darst. |
Internformat
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| 100 | 1 | |a Deutschmann, Rainer Alexander |e Verfasser |4 aut | |
| 245 | 1 | 0 | |a Two-dimensional electron systems in atomically precise periodic potentials |c Rainer Alexander Deutschmann |
| 246 | 1 | |a Two dimensional electron systems in atomically precise periodic potentials | |
| 264 | 1 | |c 2001 | |
| 300 | |a IV, 211 S. |b Ill., graph. Darst. | ||
| 336 | |b txt |2 rdacontent | ||
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| 500 | |a München, Techn. Univ., Diss., 2001 | ||
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Datensatz im Suchindex
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|---|---|
| adam_text |
CONTENTS
SUMMARY 1
1 INTRODUCTION 3
1.1 PHYSICS IN TWO DIMENSIONS. 4
1.2 SUPERLATTICES. 7
1.3 SUPERLATTICE FIELD EFFECT TRANSISTOR. 9
1.4 OUTLINE OF THIS THESIS. 11
2 MAGNETOTRANSPORT IN THE LOWEST MINIBAND 15
2.1 REVIEW . 16
2.2 QUALITATIVE MODEL USING THE ZERO-FIELD BAND STRUCTURE. 17
2.2.1 SAMPLE STRUCTURE. 17
2.2.2 KRONIG-PENNEY BAND STRUCTURE CALCULATION. 18
2.2.3 SELF-CONSISTENT BAND STRUCTURE CALCULATION. 20
2.2.4 CALCULATION OF THE ZERO-FIELD DENSITY OF STATES. 22
2.2.5 ELECTRON TRAJECTORIES IN THE ARTIFICIAL BAND STRUCTURE. 25
2.2.6 CLOSED ELECTRON ORBITS . 27
2.2.7 OPEN ELECTRON ORBITS. 29
2.2.8 MAGNETIC BREAKDOWN. 32
2.3 EXPERIMENTAL RESULTS . 32
2.3.1 MAGNETORESISTANCE FOR EF A. 33
2.3.2 MAGNETORESISTANCE FOR
E? A. 35
2.3.3 GATE VOLTAGE TO ELECTRON DENSITY RELATION. 37
2.3.4 MAGNETORESISTANCE MAXIMA AND MINIMA IN THE (UG, B) PLANE . 38
2.3.5 TRANSPORT MODEL FOR EP A. 41
2.3.6 COMPARISON OF THEORETICAL AND EXPERIMENTAL MAGNETORESISTANCE . . .
44
I
BIBLIOGRAFISCHE INFORMATIONEN
HTTP://D-NB.INFO/963128221
II
CONTENTS
2.3.7 MAGNETIC BREAKDOWN. 46
2.3.8 SPIN-POLARIZED STATE AT HIGH MAGNETIC FIELDS. 49
2.3.9 DENSITY DEPENDENCE OF THE ZERO-FIELD RESISTANCE. 50
2.3.10 HIGH FREQUENCY MAGNETORESISTANCE OSCILLATIONS. 53
2.4 QUANTUM MECHANICAL MODEL . 54
2.4.1 FORMULATION OF THE PROBLEM . 54
2.4.2 QUALITATIVE DISCUSSION OF THE ENERGY SPECTRUM. 56
2.4.3 ENERGY BANDS AND DENSITY OF STATES. 56
2.4.4 DENSITY OF STATES IN THE (UGL B) PLANE. 59
2.5 CONCLUSION. 60
3 HIGH FIELD MINIBAND TRANSPORT 63
3.1 SUPERLATTICE TRANSPORT: REVIEW. 64
3.1.1 ESAKI-TSU MODEL. 64
3.1.2 BLOCH OSCILLATIONS. 66
3.1.3 BEYOND THE ESAKI-TSU MODEL. 68
3.1.4 EXPERIMENTAL WORK. 70
3.2 SELF CONSISTENT BAND STRUCTURE CALCULATION. 71
3.3 EXPERIMENTAL RESULTS: Q=0 NM SLFET. 74
3.3.1 CURRENT-VOLTAGE RELATION: OVERVIEW. 76
3.3.2 COMPARISON TO THE ESAKI-TSU MODEL. 79
3.3.3 BLOCH - PHONON RESONANCES. 81
3.4 EXPERIMENTAL RESULTS: ALL SLFETS. 84
3.4.1 CURRENT-VOLTAGE RELATION OF SLFETS AND CEOFETS. 84
3.4.2 PEAK CURRENT AND TRANSCONDUCTANCE. 86
3.4.3 RULING OUT OTHER MECHANISMS FOR NEGATIVE DIFFERENTIAL RESISTANCE .
. 89
3.4.4 STABILIZATION OF THE CHARGE DISTRIBUTION. 90
3.4.5 ELECTRON MOBILITY. 92
3.5 TRANSPORT IN MAGNETIC FIELD. 94
3.5.1 EXPERIMENT. 94
3.5.2 THEORY: MINIBAND TRANSPORT. 95
3.5.3 THEORY: RESONANT TUNNELING. 98
3.5.4 DISCUSSION. 100
3.6 TOWARDS ULTRA SHORT CHANNEL VERTICAL TRANSISTORS. 101
CONTENTS
III
3.6.1 HETEROBARRIER CEOFET. 103
3.6.2 PLANAR DOPED CEOFET. 105
3.7 CONCLUSION. 106
4 TRANSPORT IN THE RESONANT TUNNELING REGIME 107
4.1 REVIEW ON LOW DIMENSIONAL RESONANT TUNNELING. 108
4.2 SAMPLE DESIGN AND BAND STRUCTURE CALCULATION . 110
4.3 RESONANT TUNNELING IN ZERO MAGNETIC FIELD. 112
4.3.1 EXPERIMENTAL CURRENT-VOLTAGE TRACES. 112
4.3.2 RESONANT TUNNELING MODEL. 114
4.4 RESONANT TUNNELING IN A PERPENDICULAR MAGNETIC FIELD. 116
4.4.1 EXPERIMENTAL CURRENT-VOLTAGE TRACES. 118
4.4.2 THEORY FOR THE GROUND STATE TO GROUND STATE RESONANCE SHIFT. 118
4.4.3 THEORY FOR THE TUNNELING CITRRENT INCREASE . R~R. 121
4.5 RESONANT TUNNELING IN A PARALLEL MAGNETIC FIELD. 122
4.5.1 EXPERIMENTAL CURRENT-VOLTAGE TRACES. 123
4.5.2 QUALITATIVE MODEL. 123
4.6 CONCLUSION. 125
5 QUANTUM INTERFERENCE IN ARTIFICIAL BAND STRUCTURES 127
5.1 ARTIFICIAL BAND STRUCTURES. 128
5.2 SELF-CONSISTENT CALCULATION. 131
5.2.1 SLFET STRUCTURE AND ELECTRON DENSITY. 132
5.2.2 POTENTIAL MODULATION. 133
5.2.3 POTENTIAL MODULATION AMPLITUDE . 134
5.3 MAGNETOTRANSPORT EXPERIMENTS. 136
5.3.1 MAGNETORESISTANCE TRACES. 137
5.3.2 DENSITY DEPENDENT STUDY. 139
5.3.3 ELECTRON ORBITS IN A MULTI-BAND STRUCTURE, MAGNETIC BREAKDOWN .
140
5.3.4 PROBABILITY OF ELECTRON ORBITS. . 145
5.3.5 QUANTUM INTERFERENCE IN CLOSED ORBITS. 147
5.3.6 QUANTUM INTERFERENCE BETWEEN OPEN ORBITS . 149
5.3.7 COMMENSURABILITY OSCILLATIONS. 151
5.3.8 TEMPERATURE DEPENDENCE. 152
IV
CONTENTS
5.3.9 QUANTUM INTERFERENCE IN METAL PHYSICS. 154
5.3.10 QUANTUM INTERFERENCE IN ORGANIC SUPERCONDUCTORS. 155
5.4 COMMENSURABILITY EFFECTS IN FOCUSED LASER BEAM DIFFUSED STRUCTURES.
156
5.4.1 METHOD OF FABRICATION . 156
5.4.2 SELF-CONSISTENT CALCULATION. 157
5.4.3 ONE-DIMENSIONAL SURFACE LATERAL SUPERLATTICE. 159
5.4.4 TWO-DIMENSIONAL ANTIDOT SUPERLATTICE. 159
5.4.5 MAGNETIC FOCUSSING STRUCTURE. 159
5.4.6 SUMMARY. 160
5.5 CONCLUSION. 162
6 PHASE TRANSITION AT FRACTIONAL FILLING 163
6.1 REVIEW . 164
6.2 OVERVIEW. 166
6.3 TEMPERATURE DEPENDENCE. 169
6.4 HYSTERESIS AT FILLING FACTOR V=2/3. 171
6.5 RESISTANCE TIME DEPENDENCE . 171
6.6 NUCLEAR MAGNETIC RESONANCE. 174
6.7 CONCLUSION. 176
7 CONCLUSION 179
ACKNOWLEDGEMENTS 183
LIST OF FIGURES 187
REFERENCES 191
LIST OF PUBLICATIONS
209 |
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| indexdate | 2024-10-09T18:06:30Z |
| institution | BVB |
| language | English |
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| physical | IV, 211 S. Ill., graph. Darst. |
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| spelling | Deutschmann, Rainer Alexander Verfasser aut Two-dimensional electron systems in atomically precise periodic potentials Rainer Alexander Deutschmann Two dimensional electron systems in atomically precise periodic potentials 2001 IV, 211 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier München, Techn. Univ., Diss., 2001 Bandstrukturberechnung (DE-588)4198877-2 gnd rswk-swf Feldeffekttransistor (DE-588)4131472-4 gnd rswk-swf Quasiklassisches Modell (DE-588)4318601-4 gnd rswk-swf Übergitter (DE-588)4263273-0 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Übergitter (DE-588)4263273-0 s Feldeffekttransistor (DE-588)4131472-4 s Bandstrukturberechnung (DE-588)4198877-2 s Quasiklassisches Modell (DE-588)4318601-4 s DE-604 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=009621043&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Deutschmann, Rainer Alexander Two-dimensional electron systems in atomically precise periodic potentials Bandstrukturberechnung (DE-588)4198877-2 gnd Feldeffekttransistor (DE-588)4131472-4 gnd Quasiklassisches Modell (DE-588)4318601-4 gnd Übergitter (DE-588)4263273-0 gnd |
| subject_GND | (DE-588)4198877-2 (DE-588)4131472-4 (DE-588)4318601-4 (DE-588)4263273-0 (DE-588)4113937-9 |
| title | Two-dimensional electron systems in atomically precise periodic potentials |
| title_alt | Two dimensional electron systems in atomically precise periodic potentials |
| title_auth | Two-dimensional electron systems in atomically precise periodic potentials |
| title_exact_search | Two-dimensional electron systems in atomically precise periodic potentials |
| title_full | Two-dimensional electron systems in atomically precise periodic potentials Rainer Alexander Deutschmann |
| title_fullStr | Two-dimensional electron systems in atomically precise periodic potentials Rainer Alexander Deutschmann |
| title_full_unstemmed | Two-dimensional electron systems in atomically precise periodic potentials Rainer Alexander Deutschmann |
| title_short | Two-dimensional electron systems in atomically precise periodic potentials |
| title_sort | two dimensional electron systems in atomically precise periodic potentials |
| topic | Bandstrukturberechnung (DE-588)4198877-2 gnd Feldeffekttransistor (DE-588)4131472-4 gnd Quasiklassisches Modell (DE-588)4318601-4 gnd Übergitter (DE-588)4263273-0 gnd |
| topic_facet | Bandstrukturberechnung Feldeffekttransistor Quasiklassisches Modell Übergitter Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=009621043&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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