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-18232
DTSTART;TZID=Europe/Berlin:20211109T145000
SEQUENCE:1636412902
TRANSP:OPAQUE
DTEND;TZID=Europe/Berlin:20211109T162000
URL:https://dresden-science-calendar.org/calendar/de/detail/18232
LOCATION:TUD\,    
SUMMARY:Puphal: Frustrated Magnetism in the Kagome Lattice
CLASS:PUBLIC
DESCRIPTION:Speaker: Pascal Puphal\nInstitute of Speaker: MPI-FKF\, Stuttga
 rt\nTopics:\nPhysik\n Location:\n  Name: TUD ()\n  Street:   \n  City:  \n
   Phone: \n  Fax: \nDescription: <![CDATA[<p><strong>Abstract:</strong></p
 >  <p>Quantum spin systems with Cu2+ ions are suitable materials to study 
 quantum many-body effects under variable conditions. Prominent examples ar
 e low-dimensional materials with strong magnetic frustrations. A quantum s
 pin-liquid (QSL) realizes no static magnetic order\, despite sizeable magn
 etic interactions. Compounds with decoupled antiferromagnetic kagome layer
 s are prototypical systems to search for an experimental realization of th
 e quantum spin-liquid state as first found in Herbertsmithite\, ZnCu3(OH)6
 Cl2 [1]. The dominant magnetic interaction in Herbertsmithite is caused by
  Cu–O–Cu antiferromagnetic superexchange with an exchange energy of J=
 17 meV\, but no magnetic long-range order has been observed down to T = 50
  mK.</p>  <p>One structural drawback of Herbertsmithite is the intrinsic Z
 n–Cu-antisite disorder\, which makes it challenging to achieve a structu
 rally perfect ZnCu3(OH)6Cl2 crystal.</p>  <p>From this point of view\, nov
 el kagome systems with highly ordered crystal structures are essential to 
 uncover the intrinsic properties of the kagome antiferromagnet. In additio
 n\, the frontier of Herbertsmithite is chemical doping since Mazin et al. 
 have proposed that a correlated Dirac metal can be found in electron-doped
  Herbertsmithite\, which might be realized by replacing Zn by a threevalen
 t ion [2].</p>  <p>In my talk\, I will start with the introduction of the 
 QSL candidate Herbertsmithite going to new variants with trivalent substit
 utions on the Zn site\, which gives rise to a new class of highly frustrat
 ed kagome systems [3\,4\,5].</p>  <p>[1] Tian-Heng Han et al.\, Nature 492
 \, 406–410 (2012).</p>  <p>[2] I. I. Mazin et al.\, Nature Comm 5\, 4261
  (2014). (https://www.nature.com/articles/ncomms5261.pdf?origin=ppub)</p> 
  <p>[3] Q. Barthelemy et al.\, PRM 3\, 074401 (2019). (https://doi.org/10.
 1103/PhysRevMaterials.3.074401)</p>  <p>[4] P. Puphal et al.\, J. of Mat. 
 Chem. C 5\, 2629-2635 (2017) (https://doi.org/10.1039/C6TC05110C). (https:
 //doi.org/10.1039/C6TC05110C)</p>  <p>[5] P. Puphal et al.\, Phys. Status 
 Solidi B 1800663 (2019).</p>  <p><strong>BigBlueButton:</strong></p>  <p>h
 ttps://selfservice.zih.tu-dresden.de/l/link.php?m=152129&amp\;p=59e354ae (
 https://selfservice.zih.tu-dresden.de/l/link.php?m=152129&amp\;p=59e354ae)
  (TUD)</p>  <p>https://selfservice.zih.tu-dresden.de/link.php?m=152129&amp
 \;p=490825cf (https://selfservice.zih.tu-dresden.de/link.php?m=152129&amp\
 ;p=490825cf) (external)</p>
DTSTAMP:20260413T173643Z
CREATED:20211022T220651Z
LAST-MODIFIED:20211108T230822Z
END:VEVENT
END:VCALENDAR