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SUMMARY:Different Magnetic Phases in the Doped Polar Semiconductor GeTe
DTSTART:20150703T141500
DTEND:20150703T150000
DTSTAMP:20260920T164840Z
UID:2b89e38f79c4eb646afed45916cff1221d36064df1eb8142d4dfb15b
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Markus Kriener\, RIKEN Center for Emergent Matter Science\
 , Japan\nGermanium Telluride is a material which for decades attracted hug
 e interest for various reasons. It was among the first experimentally foun
 d self-doped semiconductors with a many-valley band structure exhibiting s
 uperconductivity. It also features a ferroelectric phase transition well a
 bove room temperature\, and is a famous base material in thermoelectrics. 
 Recently a giant Rashba spin splitting was theoretically predicted and exp
 erimentally found. When doping Manganese into GeTe a ferromagnetic phase d
 evelops leading to a polar diluted magnetic semiconductor with potential f
 or multiferroicity. The polar distortion is suppressed below room temperat
 ure upon increasing the Mn concentration. At low doping the bulk system ex
 hibits two competing magnetic phases which had been overlooked in earlier 
 studies. The onset temperatures of ferromagnetic interaction differ by a f
 actor of five to six\, adding another highly interesting feature to this m
 ultifunctional system. In this presentation I will review GeTe and present
  a comprehensive study on the magnetic phases in Ge1-xMnxTe.
LOCATION:PH L1 503 http://plan.epfl.ch/?request_locale=en&room=ph+l1+503&d
 omain=places
STATUS:CONFIRMED
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