BEGIN:VCALENDAR
VERSION:2.0
PRODID:IEEE vTools.Events//EN
CALSCALE:GREGORIAN
BEGIN:VTIMEZONE
TZID:America/Denver
BEGIN:DAYLIGHT
DTSTART:20200308T030000
TZOFFSETFROM:-0700
TZOFFSETTO:-0600
RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3
TZNAME:MDT
END:DAYLIGHT
BEGIN:STANDARD
DTSTART:20191103T010000
TZOFFSETFROM:-0600
TZOFFSETTO:-0700
RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11
TZNAME:MST
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTAMP:20210131T215453Z
UID:559E5821-CC72-47E4-8439-1C6FAE774860
DTSTART;TZID=America/Denver:20200228T110000
DTEND;TZID=America/Denver:20200228T121500
DESCRIPTION:The second sound in solid state physics is a fascinating thermo
 dynamic phenomenon manifesting itself as a wave-like (in contrast with dif
 fusion) propagation of energy in a gas of quasi-particles. So far\, the se
 cond sound has been studied - both theoretically and experimentally - only
  in a gas of phonons\, which can be considered as a thermodynamically clos
 ed system in thermal equilibrium. Here\, we present a general theory of se
 cond sound for thermodynamically open quasi-particle gases\, which can exc
 hange energy with the environment. We show that the energy exchange leads 
 to nonlinear dispersion relation for the second sound and absence of diffu
 sion heat conduction regime. The developed theory is compared with the exp
 erimental results on second sound excitation in a quasi-equilibrium parame
 trically driven gas of magnons undergoing Bose-Einstein condensation. The 
 measurements of second sound dispersion provide valuable information about
  the dynamics of dense magnon gases\, inaccessible by other experimental m
 ethods.\n\nCo-sponsored by: UCCS\n\nSpeaker(s): Vasyl Tyberkevych\, \n\nRo
 om: A204\, Bldg: Osborne Center for Science and Engineering\, 1420 Austin 
 Bluffs Pkwy\, Colorado Springs\, Colorado\, United States\, 80918
LOCATION:Room: A204\, Bldg: Osborne Center for Science and Engineering\, 14
 20 Austin Bluffs Pkwy\, Colorado Springs\, Colorado\, United States\, 8091
 8
ORGANIZER:dbozhko@uccs.edu
SEQUENCE:3
SUMMARY:Magnonic Second Sound
URL;VALUE=URI:https://events.vtools.ieee.org/m/260225
X-ALT-DESC:Description: <br /><p><span style="font-size: 14.0pt\; font-fami
 ly: 'Times New Roman'\,serif\;">The second sound in solid state physics is
  a fascinating thermodynamic phenomenon manifesting itself as a wave-like 
 (in contrast with diffusion) propagation of energy in a gas of quasi-parti
 cles. So far\, the second sound has been studied - both theoretically and 
 experimentally - only in a gas of phonons\, which can be considered as a t
 hermodynamically closed system in thermal equilibrium. Here\, we present a
  general theory of second sound for thermodynamically open quasi-particle 
 gases\, which can exchange energy with the environment. We show that the e
 nergy exchange leads to nonlinear dispersion relation for the second sound
  and absence of diffusion heat conduction regime. The developed theory is 
 compared with the experimental results on second sound excitation in a qua
 si-equilibrium parametrically driven gas of magnons undergoing Bose-Einste
 in condensation. The measurements of second sound dispersion provide valua
 ble information about the dynamics of dense magnon gases\, inaccessible by
  other experimental methods.</span></p>
END:VEVENT
END:VCALENDAR