Temperature-induced gap formation in dynamic correlation functions of the one-dimensional kondo insulator: Finite-temperature density-matrix renormalization-group study

Tetsuya Mutou, Naokazu Shibata, Kazuo Ueda

研究成果: Article査読

31 被引用数 (Scopus)

抄録

Combination of the finite-temperature density-matrix renormalization group and the maximum entropy presents a new method to calculate dynamic quantities of one-dimensional many-body systems. In the present paper, density of states, local dynamic spin, and charge correlation functions of the one-dimensional Kondo insulator are discussed. Excitation gaps open with decreasing temperature and the gaps take different values depending on channels. The excitation spectra change qualitatively around the characteristic temperature corresponding to the spin gap which is the lowest energy scale of the Kondo insulator.

本文言語English
ページ(範囲)4939-4942
ページ数4
ジャーナルPhysical review letters
81
22
DOI
出版ステータスPublished - 1998
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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