Competition between supersolid phases and magnetization plateaus in the frustrated easy-axis antiferromagnet on a triangular lattice
Competition between supersolid phases and magnetization plateaus in the frustrated easy-axis antiferromagnet on a triangular lattice
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三角晶格上受挫易轴反铁磁体中超固相与磁化平台之间的竞争
DOI:
10.1103/physrevb.83.134412
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发表时间:
2011
影响因子:
3.7
通讯作者:
Seabra L
中科院分区:
文献类型:
--
作者:
Seabra L
The majority of magnetic materials possess some degree of magnetic anisotropy, either at the level of a single ion, or in the exchange interactions between different magnetic ions. Where these exchange interactions are also frustrated, the competition between them and anisotropy can stabilize a wide variety of new phases in applied magnetic field. Motivated by the hexagonal delafossite 2-AgNiO, we study the Heisenberg antiferromagnet on a layered triangular lattice with competing first- and second-neighbor interactions and single-ion easy-axis anisotropy. Using a combination of classical Monte Carlo simulation, mean-field analysis, and Landau theory, we establish the magnetic phase diagram of this model as a function of temperature and magnetic field for a fixed ratio of exchange interactions, but with values of easy-axis anisotropyextending from the Heisenberg () to the Ising () limits. We uncover a rich variety of different magnetic phases. These include several phases which are magnetic supersolids (in the sense of Matsuda and Tsuneto or Liu and Fisher), one of which may already have been observed in AgNiO. We explore how this particular supersolid arises through the closing of a gap in the spin-wave spectrum, and how it competes with rival collinear phases as the easy-axis anisotropy is increased. The finite temperature properties of this phase are found to be different from those of any previously studied magnetic supersolid.
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DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
L. Svistov;A. Smirnov;L. A. Prozorova;O. Petrenko;A. Micheler;N. Büttgen;A. Shapiro;L. N. Demianets
通讯作者:
L. N. Demianets
DOI:
--
发表时间:
1997
期刊:
影响因子:
--
作者:
K. Ishida;M. Morishita;K. Yawata;H. Fukuyama
通讯作者:
H. Fukuyama
影响因子:
8.6
作者:
A. I. Smirnov;L. Svistov;L. A. Prozorova;A. Zheludev;M. Lumsden;E. Ressouche;O. Petrenko;Kouichi Nishikawa;S. Kimura;M. Hagiwara;K. Kindo;A. Shapiro;L. N. Demianets
通讯作者:
A. I. Smirnov;L. Svistov;L. A. Prozorova;A. Zheludev;M. Lumsden;E. Ressouche;O. Petrenko;Kouichi Nishikawa;S. Kimura;M. Hagiwara;K. Kindo;A. Shapiro;L. N. Demianets
DOI:
10.1103/physrevb.42.4800
发表时间:
1990
期刊:
Physical review. B, Condensed matter
影响因子:
--
作者:
Th. Jolicoeur;E. Dagotto;Eduardo Gagliano;Silvia Bacci
通讯作者:
Silvia Bacci
DOI:
--
发表时间:
1989
期刊:
Physical Review B (Condensed Matter)
影响因子:
--
作者:
Sano;Iio;Nagata
通讯作者:
Nagata