BEGIN:VCALENDAR
VERSION:2.0
METHOD:PUBLISH
CALSCALE:GREGORIAN
PRODID:-//WordPress - MECv6.5.6//EN
X-ORIGINAL-URL:https://ktfa.science.upjs.sk/
X-WR-CALNAME:Department of Theoretical Physics and Astrophysics
X-WR-CALDESC:Pavol Jozef Šafárik University in Košice
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-PUBLISHED-TTL:PT1H
X-MS-OLK-FORCEINSPECTOROPEN:TRUE
BEGIN:VEVENT
CLASS:PUBLIC
UID:MEC-aedcced7192405e6da928177d5205839@ktfa.science.upjs.sk
DTSTART:20181213T093000Z
DTEND:20181213T223000Z
DTSTAMP:20200205T190100Z
CREATED:20200205
LAST-MODIFIED:20200205
PRIORITY:5
TRANSP:OPAQUE
SUMMARY:Deformable spin-1/2 antiferromagnetic XXZ Heisenberg chain in a magnetic field
DESCRIPTION:Oleg Derzhko\nInstitute for Condensed Matter Physics of the\nNational Academy of Sciences of Ukraine, L’viv Ukraine\nWe consider a deformable spin-1/2 antiferromagnetic XXZ Heisenberg chain and examine the spin-chain lattice compressibility as well as the sound velocity as a function of an external magnetic field applied either along the z axis or along the x axis. For strong fields, we observe a noticeable increase (with jump and hysteresis) of the lattice compressibility. Our findings are obtained by several complimentary approaches (Jordan-Wigner fermionization method, exact diagonalizations, and density matrix renormalization group technique). The lattice compressibility is related to the sound velocity which is accessible in acoustic experiments.\nhost: Jozef Strečka\n
URL:https://ktfa.science.upjs.sk/events/deformable-spin-1-2-antiferromagnetic-xxz-heisenberg-chain-in-a-magnetic-field/
CATEGORIES:KTFA seminar
LOCATION:Institute of Physics, Park Angelinum 9, Košice
END:VEVENT
END:VCALENDAR