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SUMMARY:Giant suppression of thermal Hall effect in SrTiO3 by isotopic sub
 stitution - Sangwoo Sim\, Seoul National University 
DTSTART:20211201T100000Z
DTEND:20211201T110000Z
UID:TALK166555@talks.cam.ac.uk
CONTACT:Siddharth Saxena (Montu)
DESCRIPTION:Since its first experimental observation in 2005\, thermal Hal
 l effect measurement has emerged as a powerful tool to probe charge-neutra
 l excitations in insulators\, particularly in magnetic systems. The discov
 ery of the thermal Hall effect in SrTiO3 attracted great attention as the 
 material was non-magnetic but displayed giant thermal Hall conductivity ev
 en compared to magnetic systems . In this seminar\, I will talk about the 
 recent thermal Hall research and experimental challenges\, and the isotope
  effect on the thermal Hall conductivity of SrTiO3. We discovered [1] a gi
 ant suppression of thermal Hall effect upon isotopic substitution of oxyge
 n\, which gives a clue towards the possible link between quantum criticali
 ty and thermal Hall physics. \n\n[1]  S. Sim\, H. Yang\, H. Kim\, M.J. Coa
 k\, M. Itoh\, Y. Noda and J-G Park\, Sizable suppression of thermal Hall e
 ffect upon isotopic substitution in SrTiO₃ Phys. Rev. Lett. 126-015901 (
 2021)
LOCATION:https://cam-ac-uk.zoom.us/meeting/register/tJcocOCrrzsvGtHekrkuOl
 2nTRs9zeAjSZT1
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