BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Stewart Blusson Quantum Matter Institute - ECPv6.17.3.1//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Stewart Blusson Quantum Matter Institute
X-ORIGINAL-URL:https://qmi.ubc.ca
X-WR-CALDESC:Events for Stewart Blusson Quantum Matter Institute
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:America/Vancouver
BEGIN:DAYLIGHT
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
TZNAME:PDT
DTSTART:20230312T100000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
TZNAME:PST
DTSTART:20231105T090000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
TZNAME:PDT
DTSTART:20240310T100000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
TZNAME:PST
DTSTART:20241103T090000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
TZNAME:PDT
DTSTART:20250309T100000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
TZNAME:PST
DTSTART:20251102T090000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20240531T100000
DTEND;TZID=America/Vancouver:20240531T110000
DTSTAMP:20240524T231634Z
CREATED:20240524T231634Z
LAST-MODIFIED:20240524T231634Z
UID:7544-1717149600-1717153200@qmi.ubc.ca
SUMMARY:Special Seminar: Owen Sheekey - UCSB: Inter-valley coherence\, intrinsic and extrinsic spin-orbit coupling in rhombohedral graphene
DESCRIPTION:Abstract: Rhombohedral graphene multilayers provide a clean and highly reproducible platform to explore the emergence of superconductivity and magnetism in a strongly interacting electron system. The high density of states near the van Hove singularities lead to a variety of broken symmetry phases – including exotic forms of spin and valley ferromagnetism [2\, 3]. Because of their combined spin and valley ‘isospin’ degrees of freedom\, these Stoner magnets exhibit an approximate SU(4) symmetry with a near degeneracy in the many body phase diagram. In reality\, this SU(4) symmetry is only approximate\, weak symmetry breaking arises even at the single particle level – in the form of intrinsic spin-orbit coupling. Here\, we use high resolution thermodynamic compressibility measurements and nanoSQUID on tip (nSOT) magnetometry to study the effects that intrinsic spin-orbit coupling has on the magnetic phase diagram in rhombohedral graphene. By supporting rhombohedral graphene on a WSe2 substrate\, ‘extrinsic’ strong spin-orbit coupling can be proximitized\, significantly altering the magnetic phase diagram. We demonstrate the presence of an inter-valley coherent quarter metal which becomes strongly spin-valley locked when supported by WSe2. Our results shed light on the role proximity induced Ising spin-orbit coupling and intrinsic spin-orbit coupling plays in selecting the ground state in correlated graphene systems. \nReferences: \n[1] Zhou\, H.\, Xie\, T.\, Taniguchi\, T. et al. Nature 598\, 434–438 (2021). \n[2] Zhou\, H.\, Xie\, T.\, Ghazaryan\, A.\, et al. Nature 598\, 429–433 (2021). \n[3] Arp\, T.\, et. al. arXiv:2310.03781 (2023).
URL:https://qmi.ubc.ca/event/special-seminar-owen-sheekey-ucsb-inter-valley-coherence-intrinsic-and-extrinsic-spin-orbit-coupling-in-rhombohedral-graphene/
LOCATION:McLeod 3038\, 2356 Main Mall\, Vancouver\, British Columbia\, V6T 1Z3\, Canada
ORGANIZER;CN="Aditi Adhikari":MAILTO:aditi.adhikari@ubc.ca
END:VEVENT
END:VCALENDAR