BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//UM//UM*Events//EN
CALSCALE:GREGORIAN
BEGIN:VTIMEZONE
TZID:America/Detroit
TZURL:http://tzurl.org/zoneinfo/America/Detroit
X-LIC-LOCATION:America/Detroit
BEGIN:DAYLIGHT
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20070311T020000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:EST
DTSTART:20071104T020000
RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTAMP:20230202T094340
DTSTART;TZID=America/Detroit:20230207T150000
DTEND;TZID=America/Detroit:20230207T160000
SUMMARY:Workshop / Seminar:CM-AMO Seminar | Charge Density Wave and Spin Nematic Phase in Kagome Lattice FeGe
DESCRIPTION:Join Zoom Meeting\nhttps://umich.zoom.us/j/91632009290\nMeeting ID: 916 3200 9290\nPasscode: 595628\n\nA hallmark of strongly correlated quantum materials is the rich phase diagram resulting from competing and intertwined phases with nearly degenerate ground state energies.  A well-known example is the copper oxides\, where a charge density wave (CDW) is ordered well above and strongly coupled to the magnetic order to form spin-charge separated stripes that compete with superconductivity.  Recently\, such rich phase diagrams have also been revealed in correlated topological materials.  In two-dimensional kagome lattice metals consisting of corner-sharing triangles\, the geometry of the lattice can produce flat bands with localized electrons\, non-trivial topology\, chiral magnetic order\, superconductivity and CDW order.  While CDW has been found in weakly electron correlated nonmagnetic AV_3Sb_5 (A = K\, Rb\, Cs)\, it has not yet been observed in correlated magnetic ordered kagome lattice metals.  Here we report the discovery of CDW within the antiferromagnetic (AFM) ordered phase of kagome lattice FeGe.  The CDW in FeGe occurs at wavevectors identical to that of AV_3Sb_5\, enhances the AFM ordered moment\, and induces an emergent anomalous Hall effect.  Our findings suggest that CDW in FeGe arises from the combination of electron correlations-driven AFM order and van Hove singularities-driven instability possibly associated with a chiral flux phase\, in stark contrast to strongly correlated copper oxides and nickelates\, where the CDW precedes or accompanies the magnetic order. We will also discuss our recent discovery of a spin nematic phase in FeGe.
UID:103124-21806149@events.umich.edu
URL:https://events.umich.edu/event/103124
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Physics,Science
LOCATION:West Hall - 335
CONTACT:
END:VEVENT
END:VCALENDAR