[Todos] Fwd: CHARLA IFLYSIB: Martes 12/12 - 15hs. Charla: Achieving giant Rashba splitting in transition metal oxide surface states

[Asistentes de Secretaria de Fisica]

-------- Mensaje original -------- 

 		ASUNTO:
 		CHARLA IFLYSIB: Martes 12/12 - 15hs. Charla: Achieving giant Rashba
splitting in transition metal oxide surface states

 		FECHA:
 		2017-12-10 23:26

 		REMITENTE:
 		Charlas Iflysib <charlas.iflysib en gmail.com>

 		DESTINATARIO:
 		Charlas Iflysib <charlas-iflysib en googlegroups.com>,
academic en fcaglp.unlp.edu.ar, fcnym en museo.fcnym.unlp.edu.ar,
info en ciop.unlp.edu.ar, internet en biol.unlp.edu.ar, scyt en frlp.utn.edu.ar,
secre2 en fisica.unlp.edu.ar, secre en biol.unlp.edu.ar,
secre en mate.unlp.edu.ar, secretaria en inifta.unlp.edu.ar

L en s invitamos a la próxima charla del IFLYSIB a realizarse el día MARTES
12/12 a las 15 HS.  (noten por favor el cambio de horario en esta última
charla del año).

En esta oportunidad, VERONIKA SUNKO del Max Planck Institute for
Chemical Physics of Solids (Dresden, Alemania) nos hablará sobre: 

_ACHIEVING GIANT RASHBA SPLITTING IN TRANSITION METAL OXIDE SURFACE
STATES_ 

Lugar: 
IFLYSIB (Instituto de Física de Líquidos y Sistemas Biológicos)

CALLE 59, 789 ENTRE 10 Y 11 

***********************************************************
_ACHIEVING GIANT RASHBA SPLITTING IN TRANSITION METAL OXIDE SURFACE
STATES_ 
The ability of electronic states to become spin-split, i.e. lose their
spin degeneracy, at surfaces and interfaces has recently attracted a lot
of attention. This is in part because of the hope that this property can
be used to create a new type of electronics, using both spin and charge
of the electrons, but also because such spin-splitting can lead to new
groundstates of fundamental interest. It is thus desirable to maximise
this effect, and increase the energy difference between states of
opposite spin. Based on the large majority of existing experimental
evidence gathered to date, this energy scale is a relatively small
fraction of the bare spin-orbit coupling scale of the atoms involved. We
have however shown that this need not be the case. Using modern
synchrotron based spin and angle resolved photoemission to image
spin-split states on the surfaces of delafossite oxides PdCoO2, PtCoO2
and PdRhO2, we have observed spin-splitting of the size of the full
atomic spin-orbit coupling of the relevant atoms. Comparing these
experimental results, theory, and minimal tight binding models we were
able to understand how this arises as a consequence of the relative size
of the two relevant energy scales, spin-orbit coupling and inversion
symmetry breaking. What is more, we show how certain structural
configurations may aid the creation of such states, an insight relevant
for design of new materials. 

-- 

COMISIÓN CHIFLY 
______________________________________________ 
  Si no estás interesado en recibir los avisos de las chiflys no dudes
en mandarnos un mensaje con el título: sacame de la lista ya!!!
------------ próxima parte ------------
Se ha borrado un adjunto en formato HTML...
URL: <http://mail.fisica.unlp.edu.ar/pipermail/todos/attachments/20171211/eecc76f9/attachment.html>