Introduction to Iron-Based Superconductors

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Competing Magnetic States Competition between different magnetic states provides phase space for fluctuations and works against ordering. SDW - c(2x2) N.N (1x1) (2x1) LaFeAsO TlFe 2 Se 2 Fe 1+x Te
Possible Electron Doped Phase Diagram T Suppressed SDW Metal with strong spin fluctuations – competing magnetic orders. P.G.? Superconduc<strong>to</strong>r Itinerant AFM Metal (n.n. ordering) No competition from SDW 0 Loss of 0.5 Doping nesting
Page 1 and 2: Introduction to Iron-Based Supercon
Page 3 and 4: Materials LaFeAs(O,F) Basic Researc
Page 5 and 6: Discovery of Superconductivity in F
Page 7 and 8: Fe-based Superconducting Families Z
Page 9 and 10: FeSe - The “Simplest” Fe-Superc
Page 11 and 12: A Word About Structure (Ca,Sr) 2 Ru
Page 13 and 14: Phonons and Electron-Phonon Interac
Page 15 and 16: Arsenide Electronic Structure: LaFe
Page 17 and 18: Normal Metallic State • Low carri
Page 19 and 20: Coulomb Correlations • LDA and co
Page 21 and 22: LaFeAs(O,F) Lindhard Function • N
Page 23 and 24: Spin Fluctuation Driven s +/- Prope
Page 25 and 26: T=7K T=50K Magnetic Resonance Sign
Page 27 and 28: Gap Structure If some compounds hav
Page 29 and 30: Gap Structure If some compounds hav
Page 31 and 32: Neutron Scattering - Magnetism & St
Page 33 and 34: Nesting, Doping and the Lindhard Fu
Page 35 and 36: NMR: Connection of SDW and SC State
Page 37 and 38: Resistivity in LaFeAsO McGuire et a
Page 39 and 40: Superconductivity in Metal Doped Ma
Page 41 and 42: The ThCr 2 Si 2 Structure Type Stab
Page 43 and 44: Is Iron Essential for Iron-Based Su
Page 45 and 46: Neutron Scattering - Structure Deta
Page 47 and 48: Quantum Critical Points and the LDA
Page 49: Properties of the Over-Doped Side:
Page 53: Comparison with Cuprates Cuprates F

Introduction to Iron-Based Superconductors

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