Raman Scattering in ZrB12 Cage Glass

被引：6

作者：

Sluchanko, N. E. ^{[1
,2
]}

Azarevich, A. N. ^{[1
]}

Anisimov, M. A. ^{[1
]}

Bogach, A. V. ^{[1
]}

Gavrilkin, S. Yu. ^{[3
]}

Glushkov, V. V. ^{[1
,2
]}

Demishev, S. V. ^{[1
,2
]}

Maksimov, A. A. ^{[4
]}

Tartakovskii, I. I. ^{[4
]}

Filatov, E. V. ^{[4
]}

Filippov, V. B. ^{[5
]}

Lyashchenko, A. B. ^{[5
]}

机构：

[1] Russian Acad Sci, Prokhorov Gen Phys Inst, Ul Vavilova 38, Moscow 119991, Russia

[2] State Univ, Moscow Inst Phys & Technol, Inst Skii Per 9, Dolgoprudnyi 141700, Moscow Region, Russia

[3] Russian Acad Sci, Lebedev Phys Inst, Leninskii Pr 53, Moscow 119991, Russia

[4] Russian Acad Sci, Inst Solid State Phys, Ul Akad Osipyana 2, Chernogolovka 142432, Moscow Region, Russia

[5] Natl Acad Sci Ukraine, Frantsevich Inst Problems Mat Sci, Ul Krzhizhanovskogo 3, UA-03680 Kiev, Ukraine

来源：

JETP LETTERS | 2016年 / 103卷 / 11期

基金：

俄罗斯基础研究基金会;

关键词：

SINGLE-CRYSTALS; LUB12; FEATURES; SUPERCONDUCTIVITY; YB6;

D O I：

10.1134/S0021364016110126

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

High-precision measurements of the Hall effect and Raman scattering have been performed for single crystals of ZrB12 superconductor in the wide temperature range of 5-300 K. For ZrB12, the boson peak with omega(max) similar to 100 cm(-1) has been observed for the first time within the low-frequency range of the Raman spectrum I(omega). The sizes of vibrational clusters with the correlation length ranging from 25 to 35 angstrom are estimated. The relation between the renormalization of the low-frequency density of vibrational states accompanying the transition to the cage-glass phase (T* similar to 90 K) and the enhancement of superconductivity in ZrB12 is discussed.

引用

页码：674 / 679

页数：6

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