Semantic Scholar Open Access 2003 20 sitasi

Dynamics of an anisotropic Haldane antiferromagnet in a strong magnetic field

A. Zheludev S. Shapiro Z. Honda K. Katsumata B. Grenier +6 lainnya

Lihat Sumber DOI

Abstrak

We report the results of elastic and inelastic neutron-scattering experiments on the Haldane-gap quantum antiferromagnet Ni(C 5 D 1 4 N 2 ) 2 N 3 (PF 6 ) performed at mK temperatures in a wide range of magnetic field applied parallel to the S= I spin chains. Even though this geometry is closest to an ideal axially symmetric configuration, the Haldane gap closes at the critical field H c ≃ 4 T, but reopens again at higher fields. The field dependence of the two lowest magnon modes is experimentally studied and the results are compared with the predictions of several theoretical models. We conclude that of several existing theories, only the recently proposed model [Zheludev et al., cond-mat/0301424] is able to reproduce all the features observed experimentally for different field orientations.

Topik & Kata Kunci

Physics

Penulis (11)

A. Zheludev

S. Shapiro

Z. Honda

K. Katsumata

B. Grenier

E. Ressouche

L. Regnault

Y. Chen

P. Vorderwisch

H. Mikeska

A. Kolezhuk

Format Sitasi

APA MLA BibTeX

Zheludev, A., Shapiro, S., Honda, Z., Katsumata, K., Grenier, B., Ressouche, E. et al. (2003). Dynamics of an anisotropic Haldane antiferromagnet in a strong magnetic field. https://doi.org/10.1103/PhysRevB.69.054414

Akses Cepat

Lihat di Sumber doi.org/10.1103/PhysRevB.69.054414

Informasi Jurnal

Tahun Terbit: 2003
Bahasa: en
Total Sitasi: 20×
Sumber Database: Semantic Scholar
DOI: 10.1103/PhysRevB.69.054414
Akses: Open Access ✓