Interplay between magnetism and superconductivity in iron based high temperature superconductors:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
Jülich
Forschungszentrum Jülich, Zentralbibliothek
2013
|
| Schriftenreihe: | Schriften des Forschungszentrums Jülich
Reihe Schlüsseltechnologien ; 77 |
| Schlagworte: | |
| Online-Zugang: | Inhaltstext Inhaltsverzeichnis |
| Beschreibung: | Zsfassung in dt. Sprache |
| Beschreibung: | 196 S. Ill., zahlr. graph. Darst. |
| ISBN: | 9783893369218 |
Internformat
MARC
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| 100 | 1 | |a Price, Stephen |d 1977- |e Verfasser |0 (DE-588)1047868431 |4 aut | |
| 245 | 1 | 0 | |a Interplay between magnetism and superconductivity in iron based high temperature superconductors |c Stephen Price |
| 264 | 1 | |a Jülich |b Forschungszentrum Jülich, Zentralbibliothek |c 2013 | |
| 300 | |a 196 S. |b Ill., zahlr. graph. Darst. | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 490 | 1 | |a Schriften des Forschungszentrums Jülich : Reihe Schlüsseltechnologien |v 77 | |
| 500 | |a Zsfassung in dt. Sprache | ||
| 502 | |a Zugl.: Aachen, Univ., Diss., 2013 | ||
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Datensatz im Suchindex
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| adam_text |
CONTENTS
1 INTRODUCTION 1
2 INTRODUCTION TO SUPERCONDUCTING MATERIALS 5
2.1 CONVENTIONAL SUPERCONDUCTIVITY : BCS-MATERIALS 5
2.2 HIGH T
C
SUPERCONDUCTIVITY IN CUPRATE MATERIALS 6
2.2.1 DISCOVERY OF HIGH T
C
SUPERCONDUCTIVITY 6
2.2.2 MAGNETISM AND SUPERCONDUCTIVITY 7
2.3 HIGH T
C
SUPERCONDUCTIVITY IN FE-BASED MATERIALS 9
2.3.1 STRUCTURAL PROPERTIES 10
2.3.2 THE PHASE DIAGRAMS 11
2.3.3 MAGNETIC PROPERTIES 13
2.3.4 BAND STRUCTURE AND FERMIOLOGY 18
2.3.5 SUPERCONDUCTING GAP SYMMETRY 21
2.3.6 THE SPIN RESONANCE MODE 26
3 EXPERIMENTAL AND THEORETICAL BASICS 33
3.1 SCATTERING BASICS 33
3.1.1 BASIC NEUTRON SCATTERING FORMULAS 34
3.1.2 THE FLUCTUATION-DISSIPATION THEOREM 40
3.1.3 LONGITUDINAL POLARIZATION ANALYSIS 41
3.2 NEUTRON SCATTERING INSTRUMENTS 43
3.2.1 THE THREE AXIS SPECTROMETER 43
3.2.2 THE TIME OF FLIGHT NEUTRON SPECTROMETER 45
4 EFFECT OF P- AND CO-DOPING ON THE EU
2+
MAGNETIC SUBLATTICE IN EUFE
2
AS
2
51
4.1 INTRODUCTION 51
4.1.1 MOTIVATION 51
4.1.2 NUCLEAR AND MAGNETIC STRUCTURE OF UNDOPED EUFE
2
AS2
51
4.1.3 PRESSURE INDUCED SUPERCONDUCTIVITY IN EUFE
2
AS2
54
4.1.4 DOPING INDUCED SUPERCONDUCTIVITY IN EUFE
2
AS
2
54
4.2 EXPERIMENTAL DETAILS 55
4.3 RESULTS AND DISCUSSION 57
4.3.1 MAGNETIC STRUCTURE OF EUFE
2
(ASI_
X
P
A:
)
2
X=0.05, X=0.15 57
4.3.2 MAGNETIC STRUCTURE OF EU(FE
1
_
I
CO
I
)2AS2 X=0.014, X=0.025 . 65
HTTP://D-NB.INFO/1048581438
4.4 CONCLUSION 69
5 TOF NEUTRON SCATTERING ON MAGNETIC EXCITATIONS IN BA(FE
0
.95COO.O5)2AS
2
71
5.1 INTRODUCTION 71
5.1.1 MOTIVATION 71
5.1.2 COEXISTENCE OF SUPERCONDUCTIVITY AND STATIC MAGNETIC ORDER . 71
5.1.3 A DISPERSIVE SPIN RESONANCE SIGNAL 72
5.2 EXPERIMENTAL DETAILS 76
5.3 RESULTS AND DISCUSSION 77
5.3.1 SPIN GAP AND SPIN RESONANCE IN THE SUPERCONDUCTING STATE . 77
5.3.2 LINEAR SPIN WAVE MODEL ANALYSIS OF MAGNETIC EXCITATIONS . 82
5.3.3 SPIN DIFFUSION MODEL ANALYSIS OF MAGNETIC EXCITATIONS IN THE
PARAMAGNETIC STATE 98
5.3.4 SPIN DIFFUSION MODEL ANALYSIS OF MAGNETIC EXCITATIONS IN THE MAG
NETICALLY ORDERED STATE 107
5.4 CONCLUSION 112
6 TOF NEUTRON SCATTERING ON MAGNETIC EXCITATIONS IN CAFEI-UCO^ASF WITH
X=0 ; X=0.12 115
6.1 INTRODUCTION 115
6.1.1 MOTIVATION 115
6.1.2 BASIC PROPERTIES OF CAFEI_J;CO
X
ASF MATERIALS 116
6.2 EXPERIMENTAL DETAILS 118
6.3 RESULTS AND DISCUSSION 119
6.3.1 MAGNETIC EXCITATIONS IN SUPERCONDUCTING CAFEO.SSCOO.^ASF . . . 119
6.3.2 SPIN WAVE EXCITATIONS IN PARENT CAFEASF 126
6.4 CONCLUSION 132
7 INELASTIC NEUTRON SCATTERING ON MAGNETIC EXCITATIONS IN
SUPERCONDUCTING
FETE
0
.
5
SE
0
.5
133
7.1 INTRODUCTION 133
7.1.1 MOTIVATION 133
7.1.2 MAGNETIC EXCITATIONS IN DOPED FEI^TEI-ZSE^ MATERIALS 134
7.2 EXPERIMENTAL DETAILS 135
7.2.1 LONGITUDINAL POLARIZATION ANALYSIS 136
7.3 RESULTS AND DISCUSSION 137
7.4 CONCLUSION 146
8 SUMMARY AND OUTLOOK 149
A APPENDIX 153
A.L SPIN FLUCTUATIONS IN METALLIC MATERIALS 153
A.1.1 THE MAGNETIC SUSCEPTIBILITY IN THE ITINERANT APPROACH 153
A.1.2 THE RESPONSE FUNCTION OF THE ONE DIMENSIONAL ELECTRON GAS . . 157
A. 1.3 INSTABILITIES IN A ONE DIMENSIONAL ELECTRON GAS 160
A. 1.4 THE SPIN DENSITY WAVE GROUNDSTATE 162
A.2 DETAILS OF TIME-OF-FLIGHT NEUTRON DATA TREATMENT 166
A.2.1 THE RESOLUTION OF A TOF INSTRUMENT 166
A.2.2 RESOLUTION CORRECTION FOR THE SPIN WAVE ANALYSIS 167
A.2.3 RESOLUTION CORRECTION FOR THE SPIN DIFFUSION MODEL ANALYSIS . . .
174
A.3 ADDITIONAL DATA 178
A.3.1 FETEO.SSEO.5 TRANSVERSE
CONSTANT ENERGY SCANS 178
BIBLIOGRAPHY 179 |
| any_adam_object | 1 |
| author | Price, Stephen 1977- |
| author_GND | (DE-588)1047868431 |
| author_facet | Price, Stephen 1977- |
| author_role | aut |
| author_sort | Price, Stephen 1977- |
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| building | Verbundindex |
| bvnumber | BV041866005 |
| ctrlnum | (OCoLC)875018068 (DE-599)DNB1048581438 |
| dewey-full | 537.6236 |
| dewey-hundreds | 500 - Natural sciences and mathematics |
| dewey-ones | 537 - Electricity and electronics |
| dewey-raw | 537.6236 |
| dewey-search | 537.6236 |
| dewey-sort | 3537.6236 |
| dewey-tens | 530 - Physics |
| discipline | Physik |
| format | Thesis Book |
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| indexdate | 2024-09-10T01:15:19Z |
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| isbn | 9783893369218 |
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| physical | 196 S. Ill., zahlr. graph. Darst. |
| publishDate | 2013 |
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| series | Schriften des Forschungszentrums Jülich |
| series2 | Schriften des Forschungszentrums Jülich : Reihe Schlüsseltechnologien |
| spelling | Price, Stephen 1977- Verfasser (DE-588)1047868431 aut Interplay between magnetism and superconductivity in iron based high temperature superconductors Stephen Price Jülich Forschungszentrum Jülich, Zentralbibliothek 2013 196 S. Ill., zahlr. graph. Darst. txt rdacontent n rdamedia nc rdacarrier Schriften des Forschungszentrums Jülich : Reihe Schlüsseltechnologien 77 Zsfassung in dt. Sprache Zugl.: Aachen, Univ., Diss., 2013 (DE-588)4113937-9 Hochschulschrift gnd-content Schriften des Forschungszentrums Jülich Reihe Schlüsseltechnologien ; 77 (DE-604)BV023237997 77 text/html http://deposit.dnb.de/cgi-bin/dokserv?id=4614727&prov=M&dok_var=1&dok_ext=htm Inhaltstext DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027310195&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Price, Stephen 1977- Interplay between magnetism and superconductivity in iron based high temperature superconductors Schriften des Forschungszentrums Jülich |
| subject_GND | (DE-588)4113937-9 |
| title | Interplay between magnetism and superconductivity in iron based high temperature superconductors |
| title_auth | Interplay between magnetism and superconductivity in iron based high temperature superconductors |
| title_exact_search | Interplay between magnetism and superconductivity in iron based high temperature superconductors |
| title_full | Interplay between magnetism and superconductivity in iron based high temperature superconductors Stephen Price |
| title_fullStr | Interplay between magnetism and superconductivity in iron based high temperature superconductors Stephen Price |
| title_full_unstemmed | Interplay between magnetism and superconductivity in iron based high temperature superconductors Stephen Price |
| title_short | Interplay between magnetism and superconductivity in iron based high temperature superconductors |
| title_sort | interplay between magnetism and superconductivity in iron based high temperature superconductors |
| topic_facet | Hochschulschrift |
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