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UID:DSC-18270
DTSTART;TZID=Europe/Berlin:20211214T145000
SEQUENCE:1639436963
TRANSP:OPAQUE
DTEND;TZID=Europe/Berlin:20211214T162000
URL:https://dresden-science-calendar.org/calendar/de/detail/18270
LOCATION:TUD\,    
SUMMARY:Moya: Incommensurate magnetic orders and possible field-induced sky
 rmions in the square-net centrosymmetric EuGa2Al2 system
CLASS:PUBLIC
DESCRIPTION:Speaker: Jaime Moya\nInstitute of Speaker: Rice University\, Te
 xas\, USA\nTopics:\nPhysik\n Location:\n  Name: TUD ()\n  Street:   \n  Ci
 ty:  \n  Phone: \n  Fax: \nDescription: <![CDATA[<p><strong>Abstract:</str
 ong></p>  <p>Noncollinear and noncoplanar spin textures in solid-state mat
 erials have recently been extensively explored as a source of emergent phe
 nomena associated with quantum Berry phase or relativistic spin-orbit coup
 lings. One representative example is the emergence of short-period topolog
 ical multiple-q spin textures such as skyrmions in centrosymmetric materia
 ls that provide a platform for future quantum information processing and s
 torage. Here we investigate the potential of square-lattice compound EuGa2
 Al2 as a host for such topological spin textures. Our magnetization and tr
 ansport measurements identify a new phase region that shows nonzero topolo
 gical Hall effect\, which points to the possible existence of skyrmions. N
 eutron diffraction measurements reveal the existence of multiple incommens
 urate magnetic textures (including helical and cycloidal orders) in the ze
 ro-field limit\, reminiscent of many known skyrmion hosts. In EuGa2Al2\, w
 e also identify the presence of an out-of-plane (OOP) charge density wave 
 (CDW) below ~51 K while the magnetic propagation vector lies in plane be
 low ~19 K. This behavior is in sharp contrast to the emergence of CDW an
 d spin density wave in the isostructural analogue GdRu2Si2\, where the ori
 gin of CDWs was attributed to the effective spin-channel interaction in th
 e framework of spin-charge coupling mechanism. Our results suggest a new r
 oute through OOP CDW to realizing in-plane noncollinear and noncoplanar sp
 in textures in square-lattice systems.</p>  <p><strong>BigBlueButton:</str
 ong></p>  <p>https://selfservice.zih.tu-dresden.de/l/link.php?m=156754&amp
 \;p=76518538 (https://selfservice.zih.tu-dresden.de/l/link.php?m=156754&am
 p\;p=76518538) (TUD)</p>  <p>https://selfservice.zih.tu-dresden.de/link.ph
 p?m=156754&amp\;p=eb3c2193 (https://selfservice.zih.tu-dresden.de/link.php
 ?m=156754&amp\;p=eb3c2193) (external)</p>
DTSTAMP:20260626T115621Z
CREATED:20211115T230628Z
LAST-MODIFIED:20211213T230923Z
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