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SUMMARY:Probing and manipulating valley coherence of dark excitons in WSe$
 _2$ monolayer
DTSTART;VALUE=DATE-TIME:20201223T070000Z
DTEND;VALUE=DATE-TIME:20201223T074000Z
DTSTAMP;VALUE=DATE-TIME:20260316T193314Z
UID:indico-contribution-169@indico.bitp.kiev.ua
DESCRIPTION:Speakers: Artur Slobodeniuk (Charles University)\nMonolayers o
 f semiconducting transition metal dichalcogenides are two-dimensional dire
 ct-gap systems that host tightly-bound excitons with an internal degree of
  freedom corresponding to the valley of the constituting carriers. Strong 
 spin-orbit interaction and the resulting ordering of the spin-split subban
 ds in the valence and conduction bands makes the lowest-lying excitons in 
 WX$_2$ (X being S or Se) spin-forbidden and optically dark. This results i
 n their long lifetime\, making them potentially interesting for valleytron
 ics. With polarization-resolved photoluminescence experiments performed on
  a WSe$_2$ monolayer encapsulated in a hexagonal boron nitride\, we demons
 trate how the intrinsic exchange interaction in combination with the appli
 ed in-plane and perpendicular magnetic fields enables one to probe and man
 ipulate the valley degree of freedom of the dark excitons.\n\nhttps://indi
 co.bitp.kiev.ua/event/7/contributions/169/
LOCATION:Online meeting
URL:https://indico.bitp.kiev.ua/event/7/contributions/169/
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