IJS KOLOKVIJ, ponedeljek, 20. 3. 20223, ob 13.05 ur, prof. dr. Frédéric Mila

[Nataša Goševac]

 <https://dnevi.ijs.si/> 

 

Vabimo vas na institutski kolokvij ob letošnjih Dnevih Jožefa Stefana, ki bo danes, v ponedeljek, 20. marca 2023, ob 13.05 uri »v živo« v Veliki predavalnici Instituta »Jožef Stefan« na Jamovi cesti 39 v Ljubljani. Na voljo bodo tudi kava, pijača in prigrizki.

 

 

prof. dr. Frédéric Mila

Zvezna politehnična šola v Lausanni (EPFL), Švica

 

Kvantne spinske tekočine in njihove eksperimentalne uresničitve

 

Kvantne spinske tekočine so stare toliko kot kvantni magnetizem: sploh prvi rešen model kvantnega magnetizma, Heisenbergova veriga spinov 1/2 (Bethe, 1931), je kvantna spinska tekočina. Skoraj stoletje kasneje je to področje raziskav dejavnejše kot kadarkoli prej, s številnimi posplošitvami, vključno z dvodimenzionalnimi modeli, in številnimi spojinami, katerih lastnosti ni mogoče razumeti v okviru magnetnega reda dolgega dosega. V predavanju bom naredil pregled najpomembnejših prebojev od zgodnjih osemdesetih let naprej, od Haldaneove domneve o verigi spinov 1, spinskih tekočin z naključno valenčno vezjo kot predhodnicah superprevodnosti, algebraičnih spinskih tekočin do antiferomagneta spinov 1/2 na mreži kagome. Končal bom z modelom Shastryja in Sutherlanda ter njegovo privlačno eksperimentalno uresničitvijo SrCu2(BO3)2, v kateri se pojavita zaporedje magnetizacijskih platojev in s tlakom povzročena kritična točka, ki je analogna tisti pri vodi.

 

 

Predavanje bo v angleščini.

 

Napovednik predavanja najdete tudi na naslovu  <http://www.ijs.si/ijsw/Koledar_prireditev> http://www.ijs.si/ijsw/Koledar_prireditev, posnetke preteklih predavanj pa na  <https://bit.ly/2YH8LYk> Arhiv TV IJS in  <http://videolectures.net/kolokviji_ijs> http://videolectures.net/kolokviji_ijs.

 

Lepo vabljeni!

 

 

--

 

 

We invite you to the institute colloquium in the framework of this year's Jožef Stefan days, which will take place today, Monday, March 20, 2023, at 1:05 PM »live« in the Main lecture hall of Jožef Stefan Institute at Jamova cesta 39 in Ljubljana. Coffee, drinks and snacks will also be available.

 

 

Prof. dr. Frédéric Mila

Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland

 

Quantum spin liquids and their experimental realizations

 

Quantum spin liquids are as old as quantum magnetism: the first model of quantum magnetism ever solved, the spin-1/2 Heisenberg chain (Bethe, 1931), is a quantum spin liquid. Almost a century later, this field of research is more active than ever, with several generalizations including two-dimensional models, and many compounds whose properties cannot be understood in terms of magnetic long-range order. In this talk, I will review the most striking developments since the early eighties including the Haldane’s conjecture on the spin-1 chain, random-valence-bond spin liquids as precursors to superconductivity, algebraic spin liquids and the kagome spin-1/2 antiferromagnet. I will finish with the Shastry-Sutherland model and its fascinating experimental realization SrCu2(BO3)2, with its sequence of magnetization plateaus and its pressure-induced critical point analog to that of water.

 

 

The lecture will be held in English.

 

You can find the lecture trailer at  <http://www.ijs.si/ijsw/Koledar_prireditev> http://www.ijs.si/ijsw/Koledar_prireditev, and recordings of past lectures at  <https://bit.ly/2YH8LYk> Arhiv TV IJS and  <http://videolectures.net/kolokviji_ijs> http://videolectures.net/kolokviji_ijs.

 

Cordially invited!

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.ijs.si/pipermail/kolokvij-ijs/attachments/20230320/848d6206/attachment-0001.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Banner_Dnevi Jožefa Stefana_1920x480.png
Type: image/png
Size: 651153 bytes
Desc: not available
URL: <https://mailman.ijs.si/pipermail/kolokvij-ijs/attachments/20230320/848d6206/attachment-0001.png>