1. Electronic Raman Spectroscopy in a Nut Shell (I) Yu He SC Meeting Oct 10, 2013 Raman and History Experimental Setup Geometry in Raman Position Raman among other Techniques Raman in Superconducting Materials Mode coupling SC Gap Main conclusion figures

2. Electronic Raman Spectroscopy in a Nut Shell (I) Raman and History Experimental Setup Geometry in Raman Position Raman among other Techniques Raman in Superconducting Materials Mode coupling SC Gap Main conclusion figures

3. Raman at First Glance

4. Very Frist Raman by Raman

5. Milestones to Modern Raman

6. Electronic Raman Spectroscopy Resonant Inelastic X-ray Scattering Molecules (gas and liquid) Solid (electronic) From Molecules to Solid

7. Electronic Raman Spectroscopy in a Nut Shell (I) Yu He SC Meeting Oct 10, 2013 Raman and History Experimental Setup Geometry in Raman Position Raman among other Techniques Raman in Superconducting Materials Mode coupling SC Gap Main conclusion figures

8. Backscattering Raman Two-gap dichotomy is NOT universal (in UD regime) electro-optic modulator (EOM)

9. Geometry in Raman

10. Fig. 2 to rebut the gap-dichotomy picture

11. Electronic Raman Spectroscopy in a Nut Shell (I) Yu He SC Meeting Oct 10, 2013 Raman and History Experimental Setup Geometry in Raman Position Raman among other Techniques Raman in Superconducting Materials Mode coupling SC Gap Main conclusion figures

12. e-ph: Migdal Coulomb: FL, MFL e-magnon Single Particle vs Two Particles

13. Electronic Conductivity

14. IR Spectroscopy

15. Electronic Raman Spectroscopy in a Nut Shell (I) Yu He SC Meeting Oct 10, 2013 Raman and History Experimental Setup Geometry in Raman Position Raman among other Techniques Raman in (Superconducting) Materials Mode coupling SC Gap Main conclusion figures

16. Start from single metal? Not so easy! Strong screening – small interaction volume Parabolic dispersion and spherical FS – further reduce cross section

17. Nb 3 Sn 40K 1.8K V 3 Si ‘HighTc’ Convenional SC

18. Tc ~ 7.2K, Tcdw ~33K, Hc2 ~42kG Competition and Mode Coupling

19. Mode description

20. No dichotomy when QP is well defined across all fermi surface Dichotomy appears when QP disappears from N to AN Highc SC

22. Bi2212

23. Highc SC

24. M. Le Tacon et al., Nat. Phys. 2, 537 (2006) Highc SC

27. Bi2212 0.15 0.20 0.22 Highc SC

29. Two magnon excitations Highc SC

30. FT- RamanRIXS

31. The END