BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:How to be a solid yet more fluid than a fluid? - Chang Woo Myung
DTSTART:20210203T113000Z
DTEND:20210203T123000Z
UID:TALK155998@talks.cam.ac.uk
CONTACT:Chuck Witt
DESCRIPTION:A supersolid is a mysterious and puzzling state of matter whic
 h created a vigorous debate on its existence  among  physicists  over  60 
  years. Elusive  nature  of  a  supersolid  phase  stems  from the coexist
 ence of the long-range order and superfluidity.  Here we report computatio
 nal evidence of the supersolid phase of deuterium under pressure (p >500 G
 Pa) and low temperature (T ~ 1.0K).  An  active  exchange  process  of  de
 uterium  atoms\,  treated  by  Bosonic  Feynman  path  integral molecular 
 dynamics\, develops into a highly concerted manner by which the system yet
  preserves the crystalline symmetry.  Soft core interactions of deuterium 
 allow to form densely packed metallic solid\, and this pressurised environ
 ment leads to favour in exchange.  At zero temperature limit\,  the Bose-E
 instein condensation is observed as the permutation probability of N deute
 rium atoms approaches to 1/N. Our study provides concrete evidence for the
  existence of supersolid phase in high-pressure deuterium and could provid
 e insights on the future investigation of supersolid in real materials.
LOCATION:Zoom
END:VEVENT
END:VCALENDAR