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UID:DSC-18794
DTSTART;TZID=Europe/Berlin:20220426T145000
SEQUENCE:1650924496
TRANSP:OPAQUE
DTEND;TZID=Europe/Berlin:20220426T162000
URL:https://dresden-science-calendar.de/calendar/en/detail/18794
LOCATION:TUD\,    
SUMMARY:Grumbach: Thermodynamic and magnetic properties of rare-earth delaf
 ossites and the example of NaGdS₂
CLASS:PUBLIC
DESCRIPTION:Speaker: Justus Grumbach\nInstitute of Speaker: IFMP\, TU Dresd
 en\nTopics:\nPhysik\n Location:\n  Name: TUD ()\n  Street:   \n  City:  \n
   Phone: \n  Fax: \nDescription: <p><strong>Abstract:</strong></p>  <p>Rar
 e-earth delafossites have a crystal structure containing ideal triangular 
 magnetic planes\, which form a triangular lattice magnet. These layers are
  characterised by magnetic frustration or non-trivial magnetic order state
 s. Rare-earth delafossites are promising candidates for a QSL ground state
 \, and may find interesting applications in computing due to low-energy sp
 inon excitations.</p>  <p>In recent years\, special efforts have been made
  with S=½ delafossites of the type ARX₂ (A=alkali metal\; R=rare earth\
 ; X=S\, Se) to find an ideal S=½ QSL. In this talk KCeS₂ [1\,2] and NaY
 bS₂ [3\,4] are considered more extensively. For both compounds a transit
 ion in the mK range was found. The differences in the measurments will be 
 presented and discussed.</p>  <p>A number of new measurments were made on 
 NaGdS₂ single crystals. This delafossite with magnetic Gd3+ ions\, which
  has been extensively investigated for the first time\, is of special inte
 rest due to the pure spin moment J=S=7/2. Thermodynamic and magnetic prope
 rties could be investigated by measurements of thermal expansion / magneti
 sation\, magnetostriction and specific heat. These first results form the 
 basis of the discussion. Despite the application of these macroscopic meas
 urment methods on very small samples (~µm)\, essential physical data coul
 d be extracted. The new results and their comparison to other samples will
  be the main part of this presentation.</p>  <p>[1] G. Bastien et al.\, Sc
 iPost Phys. 9\, 041 (2020)</p>  <p>[2] A. Kulbakov et al.\, J. Phys.: Cond
 ens. Mat. 33\, 425802 (2021)</p>  <p>[3] M. Baenitz et al.\, Phys Rev B 98
 \, 220409(R) (2018)</p>  <p>[4] R. Sarkar et al.\, Phys. Rev. B 100\, 2411
 16(R) (2019)</p>  <p><strong>BigBlueButton:</strong><br /> <br /> https://
 selfservice.zih.tu-dresden.de/l/link.php?m=175889&amp\;p=8c050110 (https:/
 /selfservice.zih.tu-dresden.de/l/link.php?m=175889&amp\;p=8c050110) (TUD)<
 br /> <br /> https://selfservice.zih.tu-dresden.de/link.php?m=175889&amp\;
 p=179ee462 (https://selfservice.zih.tu-dresden.de/link.php?m=175889&amp\;p
 =179ee462) (External)</p>
DTSTAMP:20260507T064734Z
CREATED:20220407T221038Z
LAST-MODIFIED:20220425T220816Z
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