Rattling and tunneling of off-center local oscillator in clathrate compounds

Goto T; Nemoto Y; Yamaguchi T; Yanagisawa T; Ueno T; Watanabe T; Takeda N; Suzuki O; Kitazawa H; Sugawara H

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Rattling and tunneling of off-center local oscillator in clathrate compounds

机译：笼形化合物中偏心本地振荡器的拍打和隧穿

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We have investigated an off-center local oscillator of a guest atom in cage of clathrate compounds R3Pd20Ge6 (R = La, Ce, Pr, Nd) and a filled skutterudite PrOs4Sb12 using ultrasonic measurements. The observation of ultrasonic dispersions in transverse C-44 mode of R3Pd20Ge6 and in transverse (C-11 - C-12)/2 mode of PrOs4Sb12 revealed the rattling of the off-center oscillator characterized by a relaxation time with Arrhenius-type temperature dependence. A low-temperature softening of C-44 in La3Pd20Ge6 below 3 K down to 20 mK and a softening of (C-11 - C-12)/2 in PrOs4Sb12 above the heavy Fermion superconducting transition indicate the charge fluctuation due to the degenerate off-center oscillators. (c) 2006 Elsevier B.V. All rights reserved.

机译：我们已经使用超声测量研究了笼形化合物R3Pd20Ge6（R = La，Ce，Pr，Nd）和填充的方钴矿PrOs4Sb12笼中客体原子的偏心局部振荡器。对R3Pd20Ge6的横向C-44模式和PrOs4Sb12的横向（C-11-C-12）/ 2模式的超声分散体的观察表明，偏心振荡器的嘎嘎声具有弛豫时间，具有阿累尼乌斯型温度依赖性。 La3Pd20Ge6中C-44的低温软化（低于3 K降至20 mK）和PrOs4Sb12中（C-11-C-12）/ 2的软铁超重跃迁之上的软化表明由于简并的电荷而引起的电荷波动-中心振荡器。（c）2006 Elsevier B.V.保留所有权利。

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《Physica, B. Condensed Matter》 |2006年第1期|共5页
作者
Goto T; Nemoto Y; Yamaguchi T; Yanagisawa T; Ueno T; Watanabe T; Takeda N; Suzuki O; Kitazawa H; Sugawara H;
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正文语种 eng
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off-center oscillator; rattling and tunneling; clathrate compound; ultrasound; FERMION SUPERCONDUCTOR PROS4SB12; KONDO; FIELD; MODEL; CE3PD20GE6; TRANSITION; SYSTEMS; METALS;

机译：偏心振荡器;棘手和隧穿;包合物;超声波;费米超级导体PROS4SB12;KONDO;领域;模型;CE3PD20GE6;过渡;系统;金属;

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1. Rattling and tunneling of off-center local oscillator in clathrate compounds [J] . Goto T, Nemoto Y, Yamaguchi T, Physica, B. Condensed Matter . 2006,第1期

机译：笼形化合物中偏心本地振荡器的拍打和隧穿
2. Off-center rattling triggers high-temperature thermal transport in thermoelectric clathrates: Nonperturbative approach [J] . Xi Qing, Zhang Zhongwei, Nakayama Tsuneyoshi, Physical review, B . 2018,第22期

机译：偏离中心嘎嘎声触发热电包装中的高温热输送：非触发方法
3. Off-center rattling and thermoelectric properties of type-Ⅱ clathrate (K, Ba)_(24)(Ga, Sn, □)_(136) single crystals [J] . S. Mano, T. Onimaru, S. Yamanaka, Physical review . 2011,第21期

机译：Ⅱ型笼形（K，Ba）_（24）（Ga，Sn，□）_（136）单晶的偏心嘎嘎声和热电性能
4. Synthesis and Characterization of Large Single Crystals of Silicon and Germanium Clathrate-II Compounds and a New Tin Compound with Clathrate Layers [C] . Svilen Bobev, Slavi C. Sevov MRS Meeting . 2001

机译：硅和锗克拉酸酯-II型化合物的大单晶的合成与表征及具有克拉碱层的新型锡化合物
5. Molten gallium flux synthesis of known thermoelectric and novel magnetic inorganic clathrate compounds: Improving thermoelectric performance. [D] . Bryan, John Daniel. 2002

机译：已知热电和新型磁性无机笼形化合物的熔融镓通量合成：改善热电性能。
6. The histochemical localization of cytochrome oxidase in the retina and lateral geniculate nucleus of the ferret cat and monkey with particular reference to retinal mosaics and ON/OFF-center visual channels [O] . GH Kageyama, MT Wong-Riley 1984

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7. Significance of Off-Center Rattling for Emerging Low-lying THz Modes in type-I Clathrates [O] . Tsuneyoshi Nakayama, Eiji Kaneshita 2016

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8. Collaborative Research in Tunneling and Field Emission Pumped Surface Wave Local Oscillators and Amplifiers for Infrared and Submillimeter Wavelengths under Director's Discretionary Fund [R] . Gustafson, T. K. 1982

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Rattling and tunneling of off-center local oscillator in clathrate compounds

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