BEGIN:VCALENDAR
VERSION:2.0
PRODID:www.dresden-science-calendar.de
METHOD:PUBLISH
CALSCALE:GREGORIAN
X-MICROSOFT-CALSCALE:GREGORIAN
X-WR-TIMEZONE:Europe/Berlin
BEGIN:VTIMEZONE
TZID:Europe/Berlin
X-LIC-LOCATION:Europe/Berlin
BEGIN:DAYLIGHT
TZNAME:CEST
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
DTSTART:19810329T030000
RRULE:FREQ=YEARLY;INTERVAL=1;BYMONTH=3;BYDAY=-1SU
END:DAYLIGHT
BEGIN:STANDARD
TZNAME:CET
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
DTSTART:19961027T030000
RRULE:FREQ=YEARLY;INTERVAL=1;BYMONTH=10;BYDAY=-1SU
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
UID:DSC-15372
DTSTART;TZID=Europe/Berlin:20181127T130000
SEQUENCE:1543277319
TRANSP:OPAQUE
DTEND;TZID=Europe/Berlin:20181127T140000
URL:https://www.dresden-science-calendar.de/calendar/de/detail/15372
LOCATION:IFW\, Helmholtzstraße 2001069 Dresden
SUMMARY:Telang: Electronically driven lattice instability in the candidate 
 Weyl semimetal Eu2Ir2O7
CLASS:PUBLIC
DESCRIPTION:Speaker: Prachi Telang\nInstitute of Speaker: Crystal Growth an
 d Characterisation Lab\, Indian Institute of Science Education and Researc
 h Pune\, I\nTopics:\nMaterialien\, Physik\n Location:\n  Name: IFW (D2E.31
 \, IFW Dresden)\n  Street: Helmholtzstraße 20\n  City: 01069 Dresden\n  P
 hone: \n  Fax: \nDescription: In the last few years\, pyrochlore iridates 
 A2Ir2O7 have garnered significant interest due to the prediction of novel 
 topological phases in these materials. We investigated the electronic grou
 nd state of a solid solution between Weyl semimetal candidate Eu2Ir2O7 and
  an unusual metal Bi2Ir2O7. As the bigger Bi ion is gradually substituted 
 for the smaller Eu ion\, an anomalous observation was made - we found the 
 unit cell volume\, rather than increasing\, undergo a rather large contrac
 tion with increasing Bi concentration. This is observed up to 3\,5 % dopin
 g concentration (anomalous region) and for higher concentrations (>5%)\, t
 he normal lattice expansion is recovered. This unusual observation was con
 firmed beyond ambiguity using very high-resolution synchrotron x-ray diffr
 action. We then show that the doping range over which the volume collapses
 \, the electronic properties - specific heat\, thermopower\, resistivity\,
  and magnetization - also exhibit corresponding changes suggestive of an e
 lectronic origin of the observed collapse. Evolution of properties in the 
 anomalous region suggests proximity to Weyl semimetallic phase in Eu2Ir2O7
 .
DTSTAMP:20260517T012641Z
CREATED:20181123T000639Z
LAST-MODIFIED:20181127T000839Z
END:VEVENT
END:VCALENDAR