Numerical Diagonalization Study on the Kagome-Lattice Antiferromagnet and related systems
Jeudi 18 octobre 2018 11:00
- Duree : 1 heure
Lieu : ILL4, seminar room, first floor - 71 avenue des Martyrs - Grenoble
Orateur : Toru SAKAI (University of Hyogo, Japan)
The S=1/2 kagome-lattice antiferromagnet was investigated using the numerical exact diagonalization. Our previous estimation of the spin gap in the thermodynamic limit had indicated that the system is gapless[1].
The conclusion was also confirmed by our recent susceptibility analysis[2]. Some anomalous magnetization process were also investigated using the larger system calculation up to 45 spins[3]. In addition some recent
new results about frustrated quantum spin systems will be reported[4,5].
[1] H. Nakano and T. Sakai, J. Phys. Soc. Jpn. 80 (2011)053704 ;arXiv:1103.5829
[2] T. Sakai and H. Nakano, Physica B 536 (2018)85 ; arXiv:1801.04458
[3] H. Nakano and T. Sakai, J. Phys. Soc. Jpn. 87 (2018)063706.
[4] H. Nakano and T. Sakai, J. Phys. Soc. Jpn. 86 (2017)114705 ;arXiv:1708.07248
[5] H. Nakano and T. Sakai, in preparation.
Contact : mader@ill.fr
Discipline évènement : (Physique)
Entité organisatrice : (ILL)
Nature évènement : (Séminaire)
Site de l'évènement : Polygone scientifique
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