Rattling mode and symmetry lowering resulting from the instability of the B12 molecule in LuB12

被引：42

作者：

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

Bogach, A. ^{[1
]}

Bolotina, N. ^{[3
]}

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

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

Dudka, A. ^{[3
]}

Krasnorussky, V. ^{[1
]}

Khrykina, O. ^{[3
]}

Krasikov, K. ^{[2
]}

Mironov, V. ^{[3
]}

Filipov, V. B. ^{[4
]}

Shitsevalova, N. ^{[4
]}

机构：

[1] Russian Acad Sci, Prokhorov Gen Phys Inst, 38 Vavilov Str, Moscow 119991, Russia

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

[3] Russian Acad Sci, Fed Sci Res Ctr Crystallog & Photon, Shubnikov Inst Crystallog, 59 Leninskii Ave, Moscow 119333, Russia

[4] Natl Acad Sci Ukraine, Frantsevich Inst Problems Mat Sci, 3 Krzhyzhanovsky Str, UA-03680 Kiev, Ukraine

来源：

PHYSICAL REVIEW B | 2018年 / 97卷 / 03期

关键词：

RARE-EARTH DODECABORIDES; LOCAL-STRUCTURE; CAGE-GLASS; RB12; R; FEATURES; YB; TRANSITION; STRIPES; SOLIDS; ZRB12;

D O I：

10.1103/PhysRevB.97.035150

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The dodecaboride LuB12 with cage-glass state and rattling modes has been studied to clarify the nature of the large amplitude vibrations of Lu ions. Discovered anisotropy of charge transport in conjunction with distortions of the conventional fcc symmetry of the crystal lattice may be attributed to coherent motion of Lu ions along a singular direction in the lattice. Arguments are presented in favor of cooperative dynamic Jahn-Teller effect in the boron sublattice to be the reason of the rattling mode, lattice distortion, and formation of the filamentary structure of the higher conducting channels-dynamic charge stripes.

引用

页数：6

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