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VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20260618T013305Z
UID:https://www.mpsd.mpg.de/events/9492/17181
DTSTART:20170418T130000Z
DTEND:20170418T140000Z
CLASS:PUBLIC
CREATED:20170328T143600Z
DESCRIPTION:The perovskite iridate Sr<sub>n+1</sub>IrnO<sub>3n+1</sub> real
 izes an interesting analogue to the cuprate high Tc superconductor. When e
 lectron-doped\, the single-layer Sr<sub>2</sub>IrO<sub>4</sub> is shown to
  manifest a pseudogap phase and possibly d-wave superconductivity. Using s
 econd harmonic generation rotational anisotropy\, we show that near the an
 tiferromagnetic transition there exists a magnetic multipolar order that b
 reaks inversion symmetry in hole-doped Sr<sub>2</sub>IrO<sub>4</sub>. One 
 candidate for this order is the loop current order that is predicted to ex
 ist in the pseudogap region of cuprate. In bilayer Sr<sub>3</sub>Ir<sub>2<
 /sub>O<sub>7</sub>\, electron-doping has been found to induce an insulator
 -to-metal transition in addition to a structural phase transition at low t
 emperature. There has been no prior experimental evidence of electronic in
 stabilities in the bilayer system. Using time-resolved optical reflectivit
 y\, we detect a charge-density-wave-like instability in metallic samples o
 f electron-doped Sr<sub>3</sub>Ir<sub>2</sub>O<sub>7</sub>. The absence of
  signatures of a new spatial periodicity from diffraction\, scanning tunne
 lling and photoemission based probes suggests an unconventional and possib
 ly short-ranged nature of this density wave order.\nSpeaker: Hao Chu
LAST-MODIFIED:20170328T143600Z
LOCATION:CFEL (Bldg. 99)\, Room: Seminar Room IV\, O1.111
ORGANIZER;CN=Andrea Cavalleri:mailto:
SUMMARY:Nonlinear harmonic generation and ultrafast studies of perovskite i
 ridates: Hao Chu - Nonlinear harmonic generation and ultrafast studies of 
 perovskite iridates
URL;VALUE=URI:https://www.mpsd.mpg.de/events/9492/17181
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