Frustrated honeycomb-lattice bilayer quantum antiferromagnet in a magnetic field

被引：4

作者：

Krokhmalskii, Taras ^{[1
,2
]}

Baliha, Vasyl ^{[1
]}

Derzhko, Oleg ^{[1
,2
,3
]}

Schulenburg, Joerg ^{[4
]}

Richter, Johannes ^{[3
]}

机构：

[1] Natl Acad Sci Ukraine, Inst Condensed Matter Phys, Svientsitskii St 1, UA-79011 Lvov, Ukraine

[2] Ivan Franko Natl Univ Lviv, Dept Theoret Phys, Drahomanov St 12, UA-79005 Lvov, Ukraine

[3] Otto von Guericke Univ, Inst Theoret Phys, POB 4120, D-39016 Magdeburg, Germany

[4] Otto von Guericke Univ, Univ Rechenzentrum, POB 4120, D-39016 Magdeburg, Germany

来源：

PHYSICA B-CONDENSED MATTER | 2018年 / 536卷

关键词：

Quantum Heisenberg antiferromagnet; Frustrated honeycomb-lattice bilayer; Localized magnon; Magnetothermodynamics; SQUARE;

D O I：

10.1016/j.physb.2017.09.064

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Frustrated bilayer quantum magnets have attracted attention as flat-band spin systems with unconventional thermodynamic properties. We study the low-temperature properties of a frustrated honeycomb-lattice bilayer spin-1/2 isotropic (XXX) Heisenberg antiferromagnet in a magnetic field by means of an effective low-energy theory using exact diagonalizations and quantum Monte Carlo simulations. Our main focus is on the magnetization curve and the temperature dependence of the specific heat indicating a finite-temperature phase transition in high magnetic fields.

引用

页码：388 / 391

页数：4

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