Low-energy excitations in crystalline perovskite oxides: Evidence from noise experiments

Article

关键词: 1-F NOISE;    SOLIDS;    LANIO3;   

DOI  :  10.1103/PhysRevB.58.R14665

来源: SCIE

【 摘 要 】

In this paper we report measurements of 1/f noise in a crystalline metallic oxide with perovskite structure down to 4.2 K. The results show existence of localized excitations with average activation energy approximate to 70-80 meV which produce a peak in the noise at T approximate to 35-40 K. Ln addition, it shows clear evidence of tunnelling-type two-level systems las in glasses) which show up in noise measurements below 30 K.

【 授权许可】

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