BEGIN:VCALENDAR VERSION:2.0 METHOD:PUBLISH PRODID:-//Missouri State University/Calendar of Events//EN CALSCALE:GREGORIAN X-WR-TIMEZONE:America/Chicago BEGIN:VTIMEZONE TZID:America/Chicago BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 DTSTART:20070311T020000 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU TZNAME:CDT END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 DTSTART:20071104T020000 RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU TZNAME:CST END:STANDARD END:VTIMEZONE BEGIN:VEVENT UID:697922ee-0a28-435c-994b-4cafe4278e7b.211081@calendar.missouristate.edu CREATED:20201104T000752Z LAST-MODIFIED:20201104T000752Z LOCATION: SUMMARY:PAMS Seminar: Dr. Alannah Hallas\, "Competing Orders and Phases in Pyrochlore Magnets" DESCRIPTION:Dr. Hallas is an assistant professor in the Department of Phys ics and Astronomy at the University of British Columbia.\n\n\nAbstract:\n \n\nRare earth pyrochlore magnets\, with the chemical formula R2M2O7\, ho ld an important position in the field of quantum magnetism. The rare eart h atoms\, R\, in this crystal structure sit on a network of corner sharin g tetrahedra\, which generally does not facilitate magnetic order due to strong geometric frustration. In addition to intrinsic frustration\, the rare earth atoms themselves can take the full range of spin anisotropies from Ising to XY to Heisenberg\, which strongly influence the exotic phas es that emerge. In this talk I will introduce the key aspects of the pyro chlore lattice and how\, experimentally\, we can determine the spin aniso tropy for a given rare earth with inelastic neutron scattering. I will in troduce experimentally relevant phase diagrams for each of the three spin anisotropies and show how phase competition and competing orders natural ly emerge in these materials.\n\n\nThis seminar will be held exclusively on Zoom (955 5209 1021). Please visit the Physics Seminars page for a lin k. X-ALT-DESC;FMTTYPE=text/html:<html><head><title></title></head><body><p>Dr . Hallas is an assistant professor in the Department of Physics and Astro nomy at the University of British Columbia.</p>\n<p>Abstract:</p>\n<p>Rar e earth pyrochlore magnets\, with the chemical formula R2M2O7\, hold an i mportant position in the field of quantum magnetism. The rare earth atoms \, R\, in this crystal structure sit on a network of corner sharing tetra hedra\, which generally does not facilitate magnetic order due to strong geometric frustration. In addition to intrinsic frustration\, the rare ea rth atoms themselves can take the full range of spin anisotropies from Is ing to XY to Heisenberg\, which strongly influence the exotic phases that emerge. In this talk I will introduce the key aspects of the pyrochlore lattice and how\, experimentally\, we can determine the spin anisotropy f or a given rare earth with inelastic neutron scattering. I will introduce experimentally relevant phase diagrams for each of the three spin anisot ropies and show how phase competition and competing orders naturally emer ge in these materials.</p>\n<p>This seminar will be held exclusively on Z oom (955 5209 1021). Please visit the&nbsp\;<a href="https://physics.miss ouristate.edu/seminars.htm">Physics Seminars page</a> for a link.</p></bo dy></html> DTSTART;TZID=America/Chicago:20201112T160000 DTEND;TZID=America/Chicago:20201112T170000 SEQUENCE:0 URL:https://physics.missouristate.edu/seminars.htm CATEGORIES:Public,Alumni,Current Students,Faculty,Future Students,Staff END:VEVENT END:VCALENDAR