Pairing glue antiferromagnetism, polaron pseudogap High-Tc.

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Presentation transcript:

pairing glue antiferromagnetism, polaron pseudogap High-Tc

How can we approach?

Mode coupling forward scattering (low energy) kink F2, ~15 meV? F0 Eliashberg function stronger doping dependence than in underdoped region? gap function in overdoped region pairing glue extract band dispersion and self energy, characteristic energy scale, near node

Bi2212 Inna laser ARPES (low energy) kink overdoped Bi2212 Yu laser ARPES, SSRL Eliashberg function overdoped Bi2212 Makoto laser ARPES gap function in overdoped region pairing glue extract band dispersion and self energy, characteristic energy scale, primarily near node

pseudogap compare normal, pseudogap, and superconducting state, primarily near AN; temperature dependence. Question: What symmetry is broken in PG state? density wave? (what is PG?) pseudogap How PG affects SC? simply competes? necessary for SC? PG + SC relation between stripe and pseudogap (and stripe & SC) stripe

pseudogap compare normal, pseudogap, and superconducting state. near antinode Bi2201 (doping dependence Makoto, La free JJ, disordered), SSRL Fermi Arc inna Na-CCOC Albert, ALS pseudogap Bi2212, (Bi2201) laser Inna, SSRL Makoto PG + SC LSCO, LBCO Yu ALS stripe

How the metallic band appears? Antiferromagnetism related to pseudogap, Mott insulator? polaron Mott physics? disorder? pseudogap? nodal gap Spectral weight transfer between coherent and incoherent part High energy anomaly Mottness, polaron near Mott insulator phase, or high energy scale

LSCO Yu, (NCCO) ALS? Antiferromagnetism Na-CCOC, LSCO Yu polaron Bi2212 Inna, Bi2201 JJ, laser ARPES LSCOYu, (Makoto), ALS? nodal gap NCCO, all cuprates ALS High energy anomaly Mottness, polaron near Mott insulator phase, or high energy scale (dz orbital) Ruihua

pairing glue antiferromagnetism, polaron pseudogap High-Tc The big big picture unconventional SCs: Pnictides Heavy Fermion Sr2RuO4 etc SC+CDW systems: TaS 2 BaPbBiO CDWs/SDWs /DWs: ReTe3 Pnictides AF+SC systems: Heavy Fermion Quantum criticality: Heavy Fermions Ruthenates Isostructural TMOs: Nickelates Ruthenates Manganites