Магнетокалоричний ефект у спін-1/2 одновимірній XX моделі з двома регулярнозмінними g-факторами

• Date: 2023
• Main Author: Baran, O.R.
• Format: Article
• Language: English; Ukrainian
• Published: Publishing house "Academperiodika" 2023
• Subjects: одновимiрнi квантовi спiновi моделi; g-фактор; фермiонiзацiя Йордана–Вiґнера; магнетокалоричний ефект; квантовий фазовий перехiд
• Online Access: https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2023076
• Journal Title: Ukrainian Journal of Physics

The influence of a non-uniformity of the g-factors with period two on the magnetocaloric effect in the spin-1/2 XX chain in the transverse field has been studied. By means of the Jordan–Wigner transformation, the problem is reduced to the Hamiltonian of noninteracting spinless fermions and solved ex...