BEGIN:VCALENDAR
VERSION:2.0
PRODID:IEEE vTools.Events//EN
CALSCALE:GREGORIAN
BEGIN:VTIMEZONE
TZID:Europe/Madrid
BEGIN:DAYLIGHT
DTSTART:20260329T030000
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
TZNAME:CEST
END:DAYLIGHT
BEGIN:STANDARD
DTSTART:20261025T020000
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
TZNAME:CET
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTAMP:20260514T152537Z
UID:D2AF0818-4184-419E-95BD-588F54C559E4
DTSTART;TZID=Europe/Madrid:20260505T100000
DTEND;TZID=Europe/Madrid:20260505T110000
DESCRIPTION:Abstract: Ultrafast spin dynamics in antiferromagnets is parado
 xical. While commonly accepted Curie-Neumann’s principle states that “
 the symmetries of the causes are to be found in the effects” [1] and imp
 lies that a magnetic field cannot control antiferromagnetic Néel vector\,
  rapidly changing THz magnetic field appears to “violate” this princip
 le and can effectively excite spins in antiferromagnets . In this ultrafas
 t regime\, laser-induced spin dynamics in antiferromagnets is intrinsicall
 y non-linear [2-4]\, where new channels of spin-lattice interaction open-u
 p [2\,3]\, the principle of superposition fails\, i.e. 1+1&gt;2 [4]\, and ant
 iferromagnets appear to host even more channels to excite spins [5-7] than
  one can find in ferromagnets. We will review recent progress in ultrafast
  antiferromagnetic spin dynamics\, highlight the recently discovered mecha
 nism enabling control of antiferromagnetic spins by a THz electric field [
 6]\, and discuss the conditions required for reliable writing of stable an
 tiferromagnetic bits [8].\n\n[1] P. Curie\, “On Symmetry in Physical Phe
 nomena”\, J. Phys. Theor. Appl.\, 393–415 (1894).\n\n[2] E. A. Mashkov
 ich et al\, “Empowering Control of Antiferromagnets by THz-Induced Spin 
 Coherence”\, Science 374\, 1608-1611 (2021).\n\n[3] T. Metzger et al\, 
 “Magnon-phonon Fermi resonance in antiferromagnetic CoF2”Nature Commun
 ications 15\, 5472 (2024).\n\n[4] T. G. H. Blank et al\, Phys. Rev. Lett. 
 131\, 096701 (2023).\n\n[5] Y. Behovits et al\, “Terahertz Néel spin-or
 bit torques drive nonlinear magnon dynamics in antiferromagnetic Mn2Au” 
 Nature Communications 14\, 6038 (2023).\n\n[6] V. Bilyk et al\, “Control
  of spins in collinear antiferromagnet Cr2O3 by terahertz electric fields
 ”Newton 1\, 6100132\, (2025).\n\n[7] R. M. Dubrovin\, A. V. Kimel\, A. K
 . Zvezdin\, “Competition between terahertz magnetoelectric and Néel spi
 n-orbit torque driven spin dynamics in metallic antiferromagnets” Phys. 
 Rev. B 112\, 064402 (2025).\n\n[8] N. Khokhlov et al.\, in preparation\n\n
 Speaker(s): Alexey Kimel\, Kazuto\n\nRoom: 4-A014\, Bldg: Institut Jean La
 mour \, 5 Allee Guinier\, Nancy\, Lorraine\, France\, 54011
LOCATION:Room: 4-A014\, Bldg: Institut Jean Lamour \, 5 Allee Guinier\, Nan
 cy\, Lorraine\, France\, 54011
ORGANIZER:stephane.mangin@univ-lorraine.fr
SEQUENCE:7
SUMMARY:Paradoxes of ultrafast antiferromagnetism and writing of antiferrom
 agnetic bits
URL;VALUE=URI:https://events.vtools.ieee.org/m/536893
X-ALT-DESC:Description: &lt;br /&gt;&lt;p class=&quot;MsoNormal&quot;&gt;&lt;strong&gt;&lt;span lang=&quot;EN-U
 S&quot;&gt;Abstract:&lt;/span&gt;&lt;/strong&gt; Ultrafast spin dynamics in antiferromagnets i
 s paradoxical.&amp;nbsp\; While commonly accepted Curie-Neumann&amp;rsquo\;s princ
 iple states that &amp;ldquo\;the symmetries of the causes are to be found in t
 he effects&amp;rdquo\; [1] and implies that a magnetic field cannot control an
 tiferromagnetic N&amp;eacute\;el vector\, rapidly changing THz magnetic field 
 appears to &amp;ldquo\;violate&amp;rdquo\; this principle and can effectively exci
 te spins in antiferromagnets . In this ultrafast regime\, laser-induced sp
 in dynamics in antiferromagnets is intrinsically non-linear [2-4]\, where 
 new channels of spin-lattice interaction open-up [2\,3]\, the principle of
  superposition fails\, i.e. 1+1&amp;gt\;2 [4]\, and antiferromagnets appear to
  host even more channels to excite spins [5-7] than one can find in ferrom
 agnets. &lt;span lang=&quot;HU&quot;&gt;We will review recent progress in ultrafast antife
 rromagnetic spin dynamics\, highlight the recently discovered mechanism en
 abling control of antiferromagnetic spins by a THz electric field [6]\, an
 d discuss the conditions required for reliable writing of stable antiferro
 magnetic bits [8].&lt;/span&gt;&lt;/p&gt;\n&lt;p class=&quot;References&quot;&gt;&lt;!-- [if !supportList
 s]--&gt;[1]&amp;nbsp\;&amp;nbsp\;&amp;nbsp\;&amp;nbsp\; &lt;!--[endif]--&gt;&lt;span lang=&quot;EN-US&quot;&gt;P. C
 urie\, &amp;ldquo\;&lt;/span&gt;&lt;span lang=&quot;HU&quot;&gt;On Symmetry in Physical Phenomena&amp;rd
 quo\;\, &lt;/span&gt;&lt;em&gt;&lt;span lang=&quot;EN-US&quot;&gt;J. Phys. Theor. Appl&lt;/span&gt;&lt;/em&gt;&lt;spa
 n lang=&quot;EN-US&quot;&gt;.\, 393&amp;ndash\;415 (1894). &lt;/span&gt;&lt;/p&gt;\n&lt;p class=&quot;Reference
 s&quot;&gt;&lt;!-- [if !supportLists]--&gt;[2]&amp;nbsp\;&amp;nbsp\;&amp;nbsp\;&amp;nbsp\; &lt;!--[endif]--
 &gt;&lt;span lang=&quot;EN-US&quot;&gt;E. A. Mashkovich et al\, &amp;ldquo\;&lt;/span&gt;Empowering Con
 trol of Antiferromagnets by THz-Induced Spin Coherence&lt;strong&gt;&amp;rdquo\;\, &lt;
 /strong&gt;&lt;em&gt;&lt;span lang=&quot;EN-US&quot;&gt;Science&lt;/span&gt;&lt;/em&gt;&lt;span lang=&quot;EN-US&quot;&gt; 374\
 , 1608-1611 (2021).&lt;/span&gt;&lt;/p&gt;\n&lt;p class=&quot;References&quot;&gt;&lt;!-- [if !supportLis
 ts]--&gt;[3]&amp;nbsp\;&amp;nbsp\;&amp;nbsp\;&amp;nbsp\; &lt;!--[endif]--&gt;&lt;span lang=&quot;EN-US&quot;&gt;T. 
 Metzger et al\, &amp;ldquo\;&lt;/span&gt;Magnon-phonon Fermi resonance in antiferrom
 agnetic CoF&lt;sub&gt;2&lt;/sub&gt;&lt;strong&gt;&amp;rdquo\;&lt;/strong&gt;&lt;em&gt;&lt;span lang=&quot;EN-US&quot;&gt;Nat
 ure Communications&lt;/span&gt;&lt;/em&gt;&lt;span lang=&quot;EN-US&quot;&gt; 15\, 5472 (2024).&lt;/span&gt;
 &lt;/p&gt;\n&lt;p class=&quot;References&quot;&gt;&lt;!-- [if !supportLists]--&gt;[4]&amp;nbsp\;&amp;nbsp\;&amp;nb
 sp\;&amp;nbsp\; &lt;!--[endif]--&gt;&lt;span lang=&quot;NL&quot;&gt;T. G. H. Blank et al\, &lt;em&gt;Phys.
  &lt;/em&gt;&lt;/span&gt;&lt;em&gt;&lt;span lang=&quot;EN-US&quot;&gt;Rev. Lett&lt;/span&gt;&lt;/em&gt;&lt;span lang=&quot;EN-US
 &quot;&gt;. 131\, 096701 (2023).&lt;/span&gt;&lt;/p&gt;\n&lt;p class=&quot;References&quot;&gt;&lt;!-- [if !suppo
 rtLists]--&gt;[5]&amp;nbsp\;&amp;nbsp\;&amp;nbsp\;&amp;nbsp\; &lt;!--[endif]--&gt;&lt;span lang=&quot;EN-US
 &quot;&gt;Y. Behovits et al\, &amp;ldquo\;&lt;/span&gt;Terahertz N&amp;eacute\;el spin-orbit tor
 ques drive nonlinear magnon dynamics in antiferromagnetic Mn&lt;sub&gt;2&lt;/sub&gt;Au
 &amp;rdquo\;&lt;strong&gt; &lt;/strong&gt;&lt;em&gt;&lt;span lang=&quot;EN-US&quot;&gt;Nature Communications&lt;/sp
 an&gt;&lt;/em&gt;&lt;span lang=&quot;EN-US&quot;&gt; 14\, 6038 (2023).&lt;/span&gt;&lt;/p&gt;\n&lt;p class=&quot;Refere
 nces&quot;&gt;&lt;!-- [if !supportLists]--&gt;[6]&amp;nbsp\;&amp;nbsp\;&amp;nbsp\;&amp;nbsp\; &lt;!--[endif
 ]--&gt;&lt;span lang=&quot;EN-GB&quot;&gt;V. Bilyk et al\, &amp;ldquo\;&lt;/span&gt;Control of spins in
  collinear antiferromagnet Cr&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;&amp;nbsp\;by terahertz 
 electric fields&amp;rdquo\;&lt;em&gt;&lt;span lang=&quot;EN-GB&quot;&gt;Newton &lt;/span&gt;&lt;/em&gt;&lt;span lan
 g=&quot;EN-GB&quot;&gt;1\, 6100132\, (2025).&lt;/span&gt;&lt;/p&gt;\n&lt;p class=&quot;References&quot;&gt;&lt;!-- [if
  !supportLists]--&gt;&lt;strong&gt;[7]&amp;nbsp\;&amp;nbsp\;&amp;nbsp\; &lt;/strong&gt;&lt;!--[endif]--&gt;
 &lt;span lang=&quot;EN-GB&quot;&gt;R. M. Dubrovin\, A. V. Kimel\, A. K. Zvezdin\, &amp;ldquo\;
 &lt;/span&gt;Competition between terahertz magnetoelectric and N&amp;eacute\;el spin
 -orbit torque driven spin dynamics in metallic antiferromagnets&amp;rdquo\; &lt;e
 m&gt;&lt;span lang=&quot;EN-GB&quot;&gt;Phys. &lt;/span&gt;&lt;/em&gt;&lt;em&gt;&lt;span lang=&quot;EN-US&quot;&gt;Rev. B&lt;/span
 &gt;&lt;/em&gt;&lt;span lang=&quot;EN-US&quot;&gt; 112\, 064402 (2025).&lt;/span&gt;&lt;/p&gt;\n&lt;p class=&quot;Refer
 ences&quot;&gt;&lt;!-- [if !supportLists]--&gt;&lt;strong&gt;[8]&amp;nbsp\;&amp;nbsp\;&amp;nbsp\; &lt;/strong
 &gt;&lt;!--[endif]--&gt;&lt;span lang=&quot;HU&quot;&gt;N. Khokhlov &lt;em&gt;et al&lt;/em&gt;.\, in preparatio
 n&lt;/span&gt;&lt;/p&gt;\n&lt;p class=&quot;References&quot;&gt;&lt;strong&gt;&amp;nbsp\;&lt;/strong&gt;&lt;/p&gt;
END:VEVENT
END:VCALENDAR