Spin dynamics in high-mobility two-dimensional electron systems embedded in GaAs, AlGaAs quantum wells:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
2012
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| Schlagworte: | |
| Online-Zugang: | kostenfrei https://nbn-resolving.org/urn:nbn:de:bvb:355-epub-270967 Inhaltsverzeichnis |
| Beschreibung: | II, 145 S. Ill., graph. Darst. |
Internformat
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| 245 | 1 | 0 | |a Spin dynamics in high-mobility two-dimensional electron systems embedded in GaAs, AlGaAs quantum wells |c vorgelegt von Michael Griesbeck |
| 246 | 1 | 3 | |a Spin dynamics in high-mobility two-dimensional electron systems embedded in GaAs/AlGaAs quantum wells |
| 264 | 1 | |c 2012 | |
| 300 | |a II, 145 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 | ||
| 610 | 2 | 7 | |a Zwei-Dimensional |0 (DE-588)10315270-2 |2 gnd |9 rswk-swf |
| 650 | 0 | 7 | |a Spindynamik |0 (DE-588)4417075-0 |2 gnd |9 rswk-swf |
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| 856 | 4 | 1 | |u http://epub.uni-regensburg.de/27096/ |x Verlag |z kostenfrei |3 Volltext |
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Datensatz im Suchindex
| _version_ | 1804149738301292544 |
|---|---|
| adam_text | IMAGE 1
CONTENTS
CONTENTS I
1 I N T R O D U C T I O N 1
2 T H E O R Y 5
2.1 SPECIAL PROPERTIES OF G A A S / A L G A A S HETEROSTRUCTURES 5
2.1.1 HETEROSTRUCTURES A N D T H E INFLUENCE OF DOPING 5
2.1.2 MOBILITY A N D ELECTRON SCATTERING PROCESSES IN A 2DES 8
2.1.3 VARIATION OF T H E CARRIER DENSITY B Y GATING 9
2.1.4 HIGH-MOBILITY HETEROSTRUCTURES IN EXTERNAL MAGNETIC FIELDS . . . .
11
2.2 SPIN OF FREE ELECTRONS IN SEMICONDUCTOR NANOSTRUCTURES 11
2.2.1 SPIN-ORBIT INTERACTION 12
2.2.2 SPIN-ORBIT FIELDS IN NANOSTRUCTURES 12
2.2.3 GENERATION OF SPIN POLARIZATION / OPTICAL ORIENTATION 14
2.2.4 SPIN DYNAMICS 16
2.2.5 T H E ELECTRON G FACTOR 17
2.2.6 SPIN DEPHASING MECHANISMS 18
2.2.7 ANISOTROPIC SPIN DEPHASING 21
2.2.8 COHERENT SPIN DYNAMICS IN T H E INTRINSIC SPIN-ORBIT FIELDS 25
2.3 DYNAMICAL POLARIZATION OF NUCLEI IN NANOSTRUCTURES 26
2.3.1 DYNAMICAL NUCLEAR POLARIZATION IN BULK MATERIAL 27
2.3.2 DYNAMICAL NUCLEAR POLARIZATION IN 2DESS 27
3 D E S I G N A N D P R E P A R A T I O N O F T H E I N V E S T I G A T
E D S A M P L E S 2 9
3.1 SAMPLE STRUCTURE 30
3.1.1 SINGLE-SIDED -DOPED HETEROSTRUCTURES 30
3.1.2 DOUBLE-SIDED 5-DOPED HIGH-MOBILITY HETEROSTRUCTURES 32
3.2 SAMPLE PREPARATION 35
3.2.1 FABRICATION OF OPTICALLY T H I N SAMPLES 35
3.2.2 FABRICATION OF SEMI-TRANSPARENT GATES 37
4 M E A S U R E M E N T T E C H N I Q U E S / E X P E R I M E N T A L S
E T U P 3 9
4.1 TIME-RESOLVED F A R A D A Y / K E R R ROTATION 39
4.2 RESONANT SPIN AMPLIFICATION TECHNIQUE 41
4.3 PHOTOLUMINESCENCE SPECTROSCOPY 44
4.4 TIME-RESOLVED DIFFERENTIAL TRANSMISSION SPECTROSCOPY 46
4.5 LOW-TEMPERATURE SETUP 46
I
HTTP://D-NB.INFO/1031118586
IMAGE 2
II CONTENTS
5 S P I N D Y N A M I C S I N T W O - D I M E N S I O N A L E L E C T R
O N S Y S T E M S W I T H A S Y M M E T R I C B A N D E D G E PROFILE 4
7
5.1 DEPENDENCE OF SPIN DYNAMICS O N T H E WELL WIDTH 51
5.1.1 DEPENDENCE OF T H E GROWTH-AXIS S D T T[ 00 IJ O N T H E WELL W I
D T H . . . 52
5.1.2 DEPENDENCE OF T H E IN-PLANE SPIN DEPHASING ANISOTROPY O N T H E
WELL WIDTH 54
5.1.3 CHANGE OF T H E G FACTOR TENSOR COMPONENTS W I T H T H E WELL W I
D T H D 56
5.2 DEPENDENCE OF SPIN DYNAMICS O N T H E SAMPLE T E M P E R A T U R E
58
5.2.1 DEPENDENCE OF T H E GROWTH-AXIS S D T T[ 0 OI] O N T H E SAMPLE
TEMPER A T U R E 58
5.2.2 DEPENDENCE OF T H E IN-PLANE SPIN DEPHASING ANISOTROPY O N T H E
SAM PLE T E M P E R A T U R E 60
5.3 DEPENDENCE OF SPIN DYNAMICS O N T H E CARRIER DENSITY 62
5.4 DEPENDENCE OF SPIN DYNAMICS O N T H E EXCITATION INTENSITY 66
6 S P I N D Y N A M I C S I N H I G H - M O B I L I T Y T W O - D I M E
N S I O N A L E L E C T R O N S Y S T E M S
W I T H A S Y M M E T R I C B A N D E D G E PROFILE 6 9
6.1 COHERENT SPIN DYNAMICS IN (OOL)-GROWN 2DESS 69
6.1.1 ZERO-FIELD COHERENT SPIN PRECESSION 69
6.1.2 CYCLOTRON EFFECT O N COHERENT SPIN PRECESSION 74
6.2 EXTENDED SPIN DEPHASING TIMES IN (LLO)-GROWN 2DESS 82
6.2.1 SPIN DEPHASING ANISOTROPY IN SYMMETRIC (LLO)-GROWN 2DESS . . . 83
6.2.2 TEMPERATURE DEPENDENCE OF T H E SPIN DEPHASING ANISOTROPY . . . .
87
6.2.3 DRAMATIC INCREASE OF SPIN DEPHASING TIMES CAUSED B Y OPTICAL
GATING 92 6.2.4 EVIDENCE FOR EFFICIENT DYNAMICAL NUCLEAR POLARIZATION
100
7 S U M M A R Y 1 0 5
B I B L I O G R A P H Y 1 0 9
A S E N S I T I V I T Y O F D S D H I G H - M O B I L I T Y G A A S / A
L G A A S H E T E R O S T R U C T U R E S O N
A B O V E - B A R R I E R I L L U M I N A T I O N 1 2 5
B S I M U L A T I O N O F T H E A S Y M M E T R I C B A N D PROFILE O F
S A M P L E C U S I N G N E X T N A N O 3 1 2 9
C E S T I M A T I N G T H E D E G R E E O F N U C L E A R S P I N P O L
A R I Z A T I O N I N S A M P L E G 1 3 1
LIST O F O W N P U B L I C A T I O N S 1 3 5
LIST O F S Y M B O L S A N D A B B R E V I A T I O N S 1 3 7
|
| any_adam_object | 1 |
| author | Griesbeck, Michael 1982- |
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| dewey-hundreds | 500 - Natural sciences and mathematics |
| dewey-ones | 537 - Electricity and electronics |
| dewey-raw | 537.622 |
| dewey-search | 537.622 |
| dewey-sort | 3537.622 |
| dewey-tens | 530 - Physics |
| discipline | Physik |
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| spelling | Griesbeck, Michael 1982- Verfasser (DE-588)1028869908 aut Spin dynamics in high-mobility two-dimensional electron systems embedded in GaAs, AlGaAs quantum wells vorgelegt von Michael Griesbeck Spin dynamics in high-mobility two-dimensional electron systems embedded in GaAs/AlGaAs quantum wells 2012 II, 145 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Regensburg, Univ., Diss., 2012 Zwei-Dimensional (DE-588)10315270-2 gnd rswk-swf Spindynamik (DE-588)4417075-0 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Spindynamik (DE-588)4417075-0 s Zwei-Dimensional (DE-588)10315270-2 b DE-604 Erscheint auch als Online-Ausgabe urn:nbn:de:bvb:355-epub-270967 http://epub.uni-regensburg.de/27096/ Verlag kostenfrei Volltext https://nbn-resolving.org/urn:nbn:de:bvb:355-epub-270967 Resolving-System DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025455749&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Griesbeck, Michael 1982- Spin dynamics in high-mobility two-dimensional electron systems embedded in GaAs, AlGaAs quantum wells Zwei-Dimensional (DE-588)10315270-2 gnd Spindynamik (DE-588)4417075-0 gnd |
| subject_GND | (DE-588)10315270-2 (DE-588)4417075-0 (DE-588)4113937-9 |
| title | Spin dynamics in high-mobility two-dimensional electron systems embedded in GaAs, AlGaAs quantum wells |
| title_alt | Spin dynamics in high-mobility two-dimensional electron systems embedded in GaAs/AlGaAs quantum wells |
| title_auth | Spin dynamics in high-mobility two-dimensional electron systems embedded in GaAs, AlGaAs quantum wells |
| title_exact_search | Spin dynamics in high-mobility two-dimensional electron systems embedded in GaAs, AlGaAs quantum wells |
| title_full | Spin dynamics in high-mobility two-dimensional electron systems embedded in GaAs, AlGaAs quantum wells vorgelegt von Michael Griesbeck |
| title_fullStr | Spin dynamics in high-mobility two-dimensional electron systems embedded in GaAs, AlGaAs quantum wells vorgelegt von Michael Griesbeck |
| title_full_unstemmed | Spin dynamics in high-mobility two-dimensional electron systems embedded in GaAs, AlGaAs quantum wells vorgelegt von Michael Griesbeck |
| title_short | Spin dynamics in high-mobility two-dimensional electron systems embedded in GaAs, AlGaAs quantum wells |
| title_sort | spin dynamics in high mobility two dimensional electron systems embedded in gaas algaas quantum wells |
| topic | Zwei-Dimensional (DE-588)10315270-2 gnd Spindynamik (DE-588)4417075-0 gnd |
| topic_facet | Zwei-Dimensional Spindynamik Hochschulschrift |
| url | http://epub.uni-regensburg.de/27096/ https://nbn-resolving.org/urn:nbn:de:bvb:355-epub-270967 http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025455749&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| work_keys_str_mv | AT griesbeckmichael spindynamicsinhighmobilitytwodimensionalelectronsystemsembeddedingaasalgaasquantumwells |