Optical Properties for Superconducting electron doped Ca10(Pt3As8)(Fe2As2)5 and parent Ca10(Pt4As8)(Fe2As2)5 single crystals.
- Title
- Optical Properties for Superconducting electron doped Ca10(Pt3As8)(Fe2As2)5 and parent Ca10(Pt4As8)(Fe2As2)5 single crystals.
- Author(s)
- Yuil Seo
- DGIST Authors
- Lee, Kijoon ; Seo, Yuil ; Kwon, Yong Seung
- Advisor
- 권용성
- Co-Advisor(s)
- Kijoon Lee
- Issued Date
- 2019
- Awarded Date
- 2019-02
- Type
- Thesis
- Table Of Contents
-
Contents
Abstract i
Chapter 1. Introduction 1
References 8
Chapter 2. Physical properties of the Ca10(PtnAs8)(Fe2As2)5 (n=3, 4) 9
2.1 Crystal Structure of the Ca10(PtnAs8)(Fe2As2)5 (n = 3, 4 ) 9
2.2 Electronic Structure of the Ca10(PtnAs8)(Fe2As2)5 (n = 3, 4) 10
2.3 Optical properties of iron-based superconductors 14
2.4 Phase diagram 21
References 26
Chapter 3. Experimental and theoretical methods 27
3.1. Single crystal growth 27
3.2. Bridgman method 28
3.3. Single crystal growth of Ca10(PtnAs8)(Fe2As2)5 (n = 3, 4) 29
3.4. Fourier-transform infrared spectroscopy 30
3.5. Optical constants 39
3.6 Kramers-Kronig Relation 43
3.7 Drude-Lorentz Model 44
3.8 Sum rules 49
3.9 Superconducting gap response in optical conductivity 51
References 53
Chapter 4. Results and Discussion 54
4.1. Optical properties of optimally doped single-crystal Ca8.5La1.5(Pt3As8)(Fe2As2)5 54
4.2. Temperature dependence of the superconducting energy gaps in Ca9.35La0.65(Pt3As8)(Fe2As2)5 single crystal 82
4.3. Evidence for a preformed Cooper pair model in the pseudogap spectra of a Ca10(Pt4As8)(Fe2As2)5 single crystal with a nodal superconducting gap 103
Chapter 5. Conclusions 123
Acknowledgment 126
- URI
-
http://dgist.dcollection.net/common/orgView/200000171451
http://hdl.handle.net/20.500.11750/10682
- Degree
- DOCTOR
- Department
- Emerging Materials Science
- Publisher
- DGIST
- Related Researcher
-
-
Lee, Kijoon
- Research Interests Biomedical Optics; DOT; DSCA; NIRS; OCT; LSCI; Nonlinear Optics; Random Laser; Coherent Backscattering
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- Files in This Item:
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- Appears in Collections:
- Department of Physics and Chemistry Theses Ph.D.
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