Iron-Based Superconducting Thin Films

Preface
Contents
Acronyms
1 Introduction to Fe-Based Superconductors
	1.1 Discoveries and the `Iron Age\' in Superconductivity
	1.2 Compounds and Crystal Structures
	1.3 Iron (Fe) and Superconductivity
	1.4 Electronic Bands and Fermi Surfaces
	1.5 Nematicity, Magnetism and Superconductivity
	References
2 Thin Film Growth of Fe-Based Superconductors
	2.1 Pulsed Laser Deposition
		2.1.1 Overview
		2.1.2 PLD of Fe-Chalcogenides
		2.1.3 PLD of Fe-Pnictide Compounds with ThCr2Si2 Structure
		2.1.4 PLD of Fe-Oxyarsenides with ZrCuSiAs Structure
	2.2 Molecular Beam Epitaxy
		2.2.1 Overview
		2.2.2 MBE-Growth of Fe-Chalcogenide Thin Films
		2.2.3 Fabrication of Fe-Chalcogenide Monolayers
		2.2.4 Alkali-Metal Evaporation on Ultrathin FeSe Films
		2.2.5 Fe-Chalcogenides/Topological Insulators (TIs)
		2.2.6 MBE-Growth of Fe-Pnictides
	2.3 Other Thin Film Growth Methods
		2.3.1 Two-Stage Synthesis with Postdeposition Annealing
		2.3.2 Selenization Methods for FeSe Film Growth
		2.3.3 Magnetron Sputtering of Fe-Chalcogenides
		2.3.4 Metal-Organic Chemical Vapor Deposition
		2.3.5 Electrodeposition of FeSe and LiFeAs
		2.3.6 Other Wet Chemical Deposition Processes for FeSe
	References
3 Growth, Microstructure and Surfaces
	3.1 In-Situ Film Growth Monitoring
		3.1.1 LEED
		3.1.2 RHEED
		3.1.3 HEPD
	3.2 Thin Film Texture and Crystal Quality
		3.2.1 Texture and In-Plane-Alignment of Grains
		3.2.2 Out-of-Plane-Alignment and Rocking Curves
	3.3 Growth Modes, Surface Structure and Morphology
		3.3.1 Polar Surfaces
		3.3.2 Growth Modes of Vapor Deposited Films
		3.3.3 Examples of Surface Studies
	References
4 The Film/Substrate Interface
	4.1 Substrates in Thin Film Growth of Fe-Based Superconductors
		4.1.1 The Role of the Substrate
		4.1.2 Buffer and Seed Layers
		4.1.3 Fe-Chalcogenide Film/Substrate Interfaces
		4.1.4 Selected Fe-Pnictide Film/Substrate Interfaces
	4.2 Interface Models
		4.2.1 Misfit Dislocations
		4.2.2 FeSe and FeSe1-xTex on TiO2 and TiO2-Terminated SrTiO3
		4.2.3 Interface Models for Fe-Chalcogenides on LaAlO3 and MgO
		4.2.4 Heterointerfaces with Fe-Pnictides
	4.3 TEM Interface Atlas
		4.3.1 Fe-Chalcogenide Thin Film/Substrate Interfaces
		4.3.2 Fe-Pnictide Thin Film/Substrate Interfaces
	References
5 More Interfaces: Multilayers and Heterostructures with Fe-Based Superconductors
	5.1 FeSe1-xTex-Based Multilayers
	5.2 New Platforms: Interfaces Between FeSe (FeTe) and TIs
	5.3 BaFe2As2-Based Heterointerfaces
	5.4 Secondary Phase Formation and Artificially Introduced Nanoparticles
	References
6 Thin Film Studies Under Focus
	6.1 Vortex Matter in Thin Films
		6.1.1 Vortex Motion
		6.1.2 Berezinskii-Kosterlitz-Thouless (BKT) Transition
		6.1.3 Critical Currents and Vortex Pinning
		6.1.4 The Role of Grain Boundaries
	6.2 Superconductor-to-Insulator (SIT) Transitions
		6.2.1 Granular and Crystalline FeSe Films
		6.2.2 Electrostatic Doping in EDLT/FeSe Films and SIT
	6.3 Electronic Phase Diagrams
		6.3.1 FeSe1-xTex and FeSe1-xSx
		6.3.2 FeSe and K-Coated FeSe Surface
		6.3.3 Ba(Fe1-xCox)2As2
		6.3.4 BaFe2As2/SrTiO3 Superlattices
	6.4 Metastable Compounds
	6.5 The Tc Boost in FeSe Monolayers
		6.5.1 Fermi Surface, Topology and Energy Gap
		6.5.2 Charge Transfer
		6.5.3 Interfacial Electron-Phonon Coupling
		6.5.4 Vortices and Andreev Bound States
	6.6 High Magnetic Field Studies
		6.6.1 Fe-Chalcogenide Thin Films in High Magnetic Fields
		6.6.2 Fe-Pnictide Thin Films in High Magnetic Fields
	6.7 Electromagnetic Properties, Superconducting Gaps and Fermi Surfaces …
		6.7.1 DC Transport and Response to Low Frequency Fields
		6.7.2 Radio Frequency and Microwave Techniques
		6.7.3 Optical (IR/THz) Spectroscopy
		6.7.4 Photoelectron Spectroscopies
		6.7.5 Point-Contact Spectroscopy
	6.8 Irradiation and Implantation
		6.8.1 Laser Light Irradiation of and Ion Implantation in FeTe Films
		6.8.2 Irradiation and Implantation Effects in FeSe1-xTex Films
		6.8.3 Irradiation of Fe-Pnictide Thin Films
	References
Appendix A Chronological Survey of Selected Publications
Appendix B Space Groups and Brillouin Zones
	References
Index