ELEMENTARY EXCITATION-SPECTRA IN THE S-D MODEL AT FINITE TEMPERATURES

被引：7

作者：

YAMASHITA, M ^{[1
]}

OKIJI, A ^{[1
]}

KAWAKAMI, N ^{[1
]}

机构：

[1] KYOTO UNIV, YUKAWA INST THEORET PHYS, KYOTO 606, JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1992年 / 61卷 / 01期

关键词：

S-D MODEL; EXACT SOLUTION; ELEMENTARY EXCITATION; FINITE TEMPERATURE; SPIN EXCITATION SPECTRA;

D O I：

10.1143/JPSJ.61.180

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Elementary excitations in the s-d model are calculated at finite temperatures with the use of the Bethe-ansatz solution. Our formulation of the spectra is based on Yang and Yang's method which has been developed in the one-dimensional interacting boson system. We investigate the temperature dependence of the spin excitation spectra. It is shown that the narrow peak structure develops in the low energy region as the temperature is decreased. At low temperatures, the shape of the spectra is described well by the renormalized resonance level model.

引用

页码：180 / 186

页数：7

共 33 条

[1]

ANDERSON PW, 1961, B AM PHYS SOC, V6, P124

[2] DIAGONALIZATION OF THE KONDO-HAMILTONIAN [J].

ANDREI, N .

PHYSICAL REVIEW LETTERS, 1980, 45 (05) :379-382

[3] SOLUTION OF THE KONDO PROBLEM [J].

ANDREI, N ;

FURUYA, K ;

LOWENSTEIN, JH .

REVIEWS OF MODERN PHYSICS, 1983, 55 (02) :331-402

[4] SCALES AND SCALING IN THE KONDO MODEL [J].

ANDREI, N ;

LOWENSTEIN, JH .

PHYSICAL REVIEW LETTERS, 1981, 46 (05) :356-360

[5] SELF-CONSISTENT LARGE-N EXPANSION FOR NORMAL-STATE PROPERTIES OF DILUTE MAGNETIC-ALLOYS [J].

BICKERS, NE ;

COX, DL ;

WILKINS, JW .

PHYSICAL REVIEW B, 1987, 36 (04) :2036-2079

[6] NEW APPROACH TO THE MIXED-VALENCE PROBLEM [J].

COLEMAN, P .

PHYSICAL REVIEW B, 1984, 29 (06) :3035-3044

[7] WHAT IS THE SPIN OF A SPIN-WAVE [J].

FADDEEV, LD ;

TAKHTAJAN, LA .

PHYSICS LETTERS A, 1981, 85 (6-7) :375-377

[8] THERMODYNAMICS OF THE S-D EXCHANGE MODEL (KONDO PROBLEM) [J].

FILYOV, VM ;

TZVELIK, AM ;

WIEGMANN, PB .

PHYSICS LETTERS A, 1981, 81 (2-3) :175-178

[9]

Hirsch J. E., 1987, Quantum Monte Carlo Methods in Equilibrium and Nonequilibrium Systems. Proceedings of the Ninth Taniguchi International Symposium, P205

[10] FINITE-TEMPERATURE SPECTRAL DENSITY FOR THE ANDERSON MODEL [J].

HORVATIC, B ;

SOKCEVIC, D ;

ZLATIC, V .

PHYSICAL REVIEW B, 1987, 36 (01) :675-683

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