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  • 论文(14)

THE 2-SOLITON BOUND-STATE SOLUTION IN AN ORDER-PARAMETER-PRESERVING ANTIFERROMAGNET

Communications in Theoretical Physics

Employing the Dyson-Maleev transformation and the coherent state ansatz, the two-soliton bound-state solution in an order-parameter-preserving antiferromagnet is investigated by using the method of multiple scales and long-wavelength approximation....

关键词: ferromagnetic heisenberg chain;anisotropic exchange;spin dynamics;excitations

Solitary Magnon Localization in Antiferromagnet RbFeBr_3

Wuming LIU and Benlian ZHOU(International Centre for Materials Physics , Institute of Metal Research , Academia Sinica , Shenyang , 110015 , China)Liming GUO(Dept. of Mathematics , Institute of Yunnan Nationality , Xunming , 650031 , China)

材料科学技术(英文)

Introducing the Dyson-Maleev transformation. the coherent state ansatz and the time-dependent variation principle, we obtain two partial different equations of motion from Hamiltonian. Employing the method of multiple scales. we reduce these equations into the envelope...

关键词:

SOLITARY MAGNON LOCALIZATION AND 2 MAGNON BOUND-STATES IN TYPE-I ANTIFERROMAGNETS

Physica Scripta

Introducing the Dyson-Maleev transformation, the coherent-state ansatz and the time-dependent variation principle, we obtain two partial differential equations of motion in type-I antiferromagnets. Employing the method of multiple scales, we reduce these equations into...

关键词: ferromagnetic heisenberg chain;holstein-primakoff representation;canted anti-ferromagnet;magnetic excitations;statistical-mechanics;nonlinear excitations;optical-response;low-temperatures;spin;dynamics;solitons

SOLITON ENERGY IN THE FCC ANTIFERROMAGNET CEAS

Physica Status Solidi B-Basic Research

Employing the Dyson-Maleev transformation and the coherent state ansatz, two partial differential equations of motion from the Hamiltonian of the f.c.c. antiferromagnet CeAs are obtained. By using the multiple scalar method and the long-wavelength approximation, these ...

关键词: nonlinear periodic structures;envelope-function approach;anisotropic;exchange;heisenberg chain;excitations;electrodynamics;ferromagnet;dynamics;neutron;states

SOLITARY EXCITATIONS IN ANTIFERROMAGNET CSFEBR3

Zeitschrift Fur Physik B-Condensed Matter

With employing the Dyson-Maleev transformation and the coherent-state ansatz, two partial different motion equations are obtained from Hamiltonian of antiferromagnet CsFeBr3. By using the method of multiple scales and the long-wavelength approximation, these equations ...

关键词: singlet ground-state;magnetic excitations;temperature;field;chain;csfecl3;rbfebr3

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

材料科学技术(英文)

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-frequenc...

关键词: intrinsic localized mode , null , null

VIBRATIONAL-SPECTRA OF DIAGONALLY SELF-AFFINE FRACTALS

Journal of Physics-Condensed Matter

The vibrational densities of states for a deterministic self-affine aggregate and the two-dimensional Eden hulls are computed numerically by the continued-fraction recursion method. It is shown that in contrast with the geometrical complexity the density of states for the diagonally self-affine frac...

关键词: effective-medium approximation;diffusion-limited aggregate;silica;aerogels;clusters;density;states;surfaces;network;model

Computer simulation of vibration spectrum in disordered systems

Journal De Physique Iv

The disordered systems are of fractal structures. Alexander and Orbach showed that the vibrational density of states for fractal nets follow. the universal law:D(omega) similar to omega(2-:) where d is the spectral (fracton) dimensionality;d=4/3 for any Euclidean dimen...

关键词: fractons

Correctness and completeness of the theory of bio-energy transport Reply to the comments on "The theory of bio-energy transport in the protein molecules and its properties"

Physics of Life Reviews

Commentaries by Philip W.T. Pong, Nongyue He, S.D. Liang, Tao Song, Yuri Gaididei and Sergey Volkov and Alexander Y. Grosberg on my review article (Pang, 2011 [1]) are answered. The validity of Davydov's mechanism of bio-energy transport, the completeness of theory, ou...

关键词: biological temperature;3 channels;soliton;model

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