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DTSTART:20180325T030000
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DTSTAMP:20260403T220404Z
UID:59d4bf21eabf2893925975@ist.ac.at
DTSTART:20180918T110000
DTEND:20180918T123000
DESCRIPTION:Speaker: Yossi Paltiel\nhosted by Misha Lemeshko\nAbstract: Liv
 ing organisms rely on chiral molecules\, such as nucleic acids and protein
 s. A chiral molecule is not superimposable on its mirror image\, also know
 n as its enantiomer\, just like our right hand cannot be superimposed on o
 ur left hand. Organisms contain only one enantiomeric form of a molecule\,
  a selectivity that has prevailed through evolution. We claim that the chi
 ral induced spin selectivity (CISS) effect can explain why enantiomeric pu
 rity might provide an advantage in biology. CISS is an electronic phenomen
 on in which electron transmission through chiral molecules depends on the 
 direction of the electron spin\, a quantum mechanical property associated 
 with its magnetic moment. Thus charge displacement and transmission in chi
 ral molecules generates a spin-polarized electron distribution. This effec
 t\; enhance electron transfer in proteins\, enable nano metric charge sepa
 ration\, and explain biorecognition.From the applicational point\, by util
 izing the CISS effect we demonstrated a magnet less spin based nano magnet
 ic optical and electrical memory. To further enhance efficiency\, we also 
 investigated the interface between superconducting thin films and the magn
 etic layers improving and simplifying superconducting spintronics devices.
  The presented technology has the potential to overcome the limitations of
  other magnetic-based memory technologies to allow fabricating inexpensive
 \, high-density universal and embedded memory-on-chip devices.  Lastly\, u
 sing magnetic ferromagnetic surfaces we have shown a simple generic ways t
 o seperate between two enantiomers. Achieving enantiopurity is of great im
 portance to many industrial fields. This enantiospecific interaction is co
 ntroled by surface magnetization and the chirality of oligopeptides\, olig
 onucleotides\, and amino acids.In my talk I will presnt the CISS effect an
 d its importence\, both for applications and basic science. I will also po
 int to open questions reagrding the CISS.
LOCATION:Big Seminar room Ground floor / Office Bldg West (I21.EG.101)\, IS
 TA
ORGANIZER:jdeanton@ist.ac.at
SUMMARY:Yossi Paltiel: The Chiral Induced Spin Selectivity Effect (CISS)
URL:https://talks-calendar.ista.ac.at/events/1319
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