J. Mater. Sci. Technol. ›› 1993, Vol. 9 ›› Issue (2): 148-152.

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Intrinsic Localized Modes in an Order-parameter-preserving Antiferromagnet

Wuming LIU+;Shaoyun FU;Benlian ZHOU, International Centre for Materials Physics, Institute of Metal Research, Academia Sinica, Shenyang, 110015, China   

  • 收稿日期:1993-03-28 修回日期:1993-03-28 出版日期:1993-03-28 发布日期:2009-10-10

Intrinsic Localized Modes in an Order-parameter-preserving Antiferromagnet

Wuming LIU+;Shaoyun FU;Benlian ZHOU, International Centre for Materials Physics, Institute of Metal Research, Academia Sinica, Shenyang, 110015, China   

  • Received:1993-03-28 Revised:1993-03-28 Online:1993-03-28 Published:2009-10-10

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摘要： <正> Intrinsic localized modes in an order-parameter-preserving antiferromagnet are investigated withemploying the Dyson-Maleev transformation and the coherent-state ansatz. These modes which be-low the magnon frequency band correspond to a local large-angle, low-frequency precessional mo-tion of spins, quantum states of which are characterized by the indefiniteness of the number of rele-vant magnons.

Abstract: Intrinsic localized modes in an order-parameter-preserving antiferromagnet are investigated with employing the Dyson-Maleev transformation and the coherent-state ansatz. These modes which be- low the magnon frequency band correspond to a local large-angle, low-frequency precessional mo- tion of spins, quantum states of which are characterized by the indefiniteness of the number of rele- vant magnons.

Key words: intrinsic localized mode, antiferromagnet, magnon