electronic raman spectroscopy in a nut shell (i)
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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. - PowerPoint PPT PresentationTRANSCRIPT
Electronic Raman Spectroscopy in a Nut Shell (I)
Yu HeSC MeetingOct 10, 2013
• Raman and History
• Experimental Setup• Geometry in Raman
• Position Raman among other Techniques
• Raman in Superconducting Materials• Mode coupling• SC Gap
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
Raman at First Glance
Very Frist Raman by Raman
Milestones to Modern Raman
Electronic Raman Spectroscopy
Resonant Inelastic X-ray Scattering
Molecules (gas and liquid)
Solid (electronic)
From Molecules to Solid
Electronic Raman Spectroscopy in a Nut Shell (I)
Yu HeSC MeetingOct 10, 2013
• Raman and History
• Experimental Setup• Geometry in Raman
• Position Raman among other Techniques
• Raman in Superconducting Materials• Mode coupling• SC Gap
Backscattering Raman
electro-optic modulator (EOM)
Geometry in Raman
Electronic Raman Spectroscopy in a Nut Shell (I)
Yu HeSC MeetingOct 10, 2013
• Raman and History
• Experimental Setup• Geometry in Raman
• Position Raman among other Techniques
• Raman in Superconducting Materials• Mode coupling• SC Gap
e-ph: Migdal
Coulomb: FL, MFL
e-magnon
Single Particle vs Two Particles
Electronic Conductivity
IR Spectroscopy
Electronic Raman Spectroscopy in a Nut Shell (I)
Yu HeSC MeetingOct 10, 2013
• Raman and History
• Experimental Setup• Geometry in Raman
• Position Raman among other Techniques
• Raman in (Superconducting) Materials• Mode coupling• SC Gap
Start from single metal? Not so easy!
• Strong screening – small interaction volume
• Parabolic dispersion and spherical FS – further reduce cross section
Nb3Sn
40K
1.8K
1.8K
1.8K
V3Si
‘HighTc’ Convenional SC
Tc ~ 7.2K, Tcdw ~33K, Hc2 ~42kG
Competition and Mode Coupling
Mode description
Highc SC
Highc SC
Highc SCBi2212
Highc SC
M. Le Tacon et al., Nat. Phys. 2, 537 (2006)
Highc SC
Highc SC
Highc SC
Bi2212
0.15 0.20 0.22
Highc SC
Highc SC
Two magnon excitations
Highc SC
FT- Raman RIXS
The END