Nuclear Magnetic Relaxation in the Haldane-Gap Antiferromagnet
  Ni(C_2_H_8_N_2_)_2_NO_2_(ClO_4_)

Affleck I.; Affleck I.; Affleck I.; Affleck I.; Azuma M.; Borsa F.; Buyers W. J. L.; Darriet J.; den Nijs M.; Fujimoto S.; Fujimoto S.; Fujiwara N.; Fujiwara N.; Fujiwara N.; Fáth G.; Gaveau P.; Golinelli O.; Haldane F. D. M.; Haldane F. D. M.; Hirsch J. E.; Honda Z.; Knabe S.; Ma S.; Manaka H.; Maslov S.; Meyer A.; Miyashita S.; Oshikawa M.; Renard J. P.; Renard J. P.; Sachdev S.; Sachdev S.; Sagi J.; Sakaguchi T.; Schollwöck U.; Takahashi M.; Takahashi M.; Takigawa M.; Takushima Y.; Tang S.; Todo S.; Totsuka K.; Tun Z.; Wang X.; White S. R.; White S. R.; Yamamoto S.; Yamamoto S.; Yamamoto S.; Yamamoto S.; Yamamoto S.; Yamamoto S.; Yamamoto S.; Yamamoto S.; Yokoo T.; Zaliznyak I. A.; Zheludev A.; Zheludev A.

research

Nuclear Magnetic Relaxation in the Haldane-Gap Antiferromagnet Ni(C_2_H_8_N_2_)_2_NO_2_(ClO_4_)

Abstract

A new theory is proposed to interpret nuclear spin-lattice relaxation-time (T_1_) measurements on the spin-1 quasi-one-dimensional Heisenberg antiferromagnet Ni(C_2_H_8_N_2_)_2_NO_2_(ClO_4_) (NENP). While Sagi and Affleck pioneeringly discussed this subject in terms of field-theoretical languages, there is no theoretical attempt yet to explicitly simulate the novel observations of 1/T_1_ reported by Fujiwara et al.. By means of modified spin waves, we solve the minimum of 1/T_1_ as a function of an applied field, pending for the past decade.Comment: to be published in J. Phys. Soc. Jpn. 73, No. 4 (2004

Similar works

Full text

Available Versions

Crossref

Last time updated on 03/01/2020