Rattling motion in β-pyrochlore compounds explored by the millimeter-wave conductivity measurement

Atsutaka Maeda; Kentaro Oba; Yoshinori Imai; Jun Ichi Yamaura; Zenji Hiroi

doi:10.1016/j.physc.2009.11.102

Rattling motion in β-pyrochlore compounds explored by the millimeter-wave conductivity measurement

Atsutaka Maeda, Kentaro Oba, Yoshinori Imai, Jun Ichi Yamaura, Zenji Hiroi

Research output: Contribution to journal › Article › peer-review

Abstract

Complex conductivity is investigated at 19 GHz and 44 GHz in the normal state in β-pyrochlore materials, AOs₂O₆ (A = Cs, Rb and K). In Cs material, large enhancement of the quasiparticle (QP) scattering time, τ, is observed at low temperatures, whereas there is no such enhancement in Rb and K materials. This indicates that rattling motion is absent in Cs material, whether in K and Rb materials it plays the role as a scatterer for QPs. In Rb materials, we find charge excitation possibly originated from the rattling motion.

Original language	English
Journal	Physica C: Superconductivity and its applications
Volume	470
Issue number	SUPPL.1
DOIs	https://doi.org/10.1016/j.physc.2009.11.102
Publication status	Published - 2010 Dec 1
Externally published	Yes

Keywords

Cavity perturbation
Millimeter-wave conductivity
Rattling
Superconductivity
β-Pyrochlore compounds

ASJC Scopus subject areas

Condensed Matter Physics
Electrical and Electronic Engineering
Energy Engineering and Power Technology
Electronic, Optical and Magnetic Materials

Access to Document

10.1016/j.physc.2009.11.102

Fingerprint Dive into the research topics of 'Rattling motion in β-pyrochlore compounds explored by the millimeter-wave conductivity measurement'. Together they form a unique fingerprint.

Cite this

@article{1aec418d731641d5bb1013c1a387725d,

title = "Rattling motion in β-pyrochlore compounds explored by the millimeter-wave conductivity measurement",

abstract = "Complex conductivity is investigated at 19 GHz and 44 GHz in the normal state in β-pyrochlore materials, AOs2O6 (A = Cs, Rb and K). In Cs material, large enhancement of the quasiparticle (QP) scattering time, τ, is observed at low temperatures, whereas there is no such enhancement in Rb and K materials. This indicates that rattling motion is absent in Cs material, whether in K and Rb materials it plays the role as a scatterer for QPs. In Rb materials, we find charge excitation possibly originated from the rattling motion.",

keywords = "Cavity perturbation, Millimeter-wave conductivity, Rattling, Superconductivity, β-Pyrochlore compounds",

author = "Atsutaka Maeda and Kentaro Oba and Yoshinori Imai and Yamaura, {Jun Ichi} and Zenji Hiroi",

year = "2010",

month = dec,

day = "1",

doi = "10.1016/j.physc.2009.11.102",

language = "English",

volume = "470",

journal = "Physica C: Superconductivity and its Applications",

issn = "0921-4534",

publisher = "Elsevier",

number = "SUPPL.1",

}

TY - JOUR

T1 - Rattling motion in β-pyrochlore compounds explored by the millimeter-wave conductivity measurement

AU - Maeda, Atsutaka

AU - Oba, Kentaro

AU - Imai, Yoshinori

AU - Yamaura, Jun Ichi

AU - Hiroi, Zenji

PY - 2010/12/1

Y1 - 2010/12/1

N2 - Complex conductivity is investigated at 19 GHz and 44 GHz in the normal state in β-pyrochlore materials, AOs2O6 (A = Cs, Rb and K). In Cs material, large enhancement of the quasiparticle (QP) scattering time, τ, is observed at low temperatures, whereas there is no such enhancement in Rb and K materials. This indicates that rattling motion is absent in Cs material, whether in K and Rb materials it plays the role as a scatterer for QPs. In Rb materials, we find charge excitation possibly originated from the rattling motion.

AB - Complex conductivity is investigated at 19 GHz and 44 GHz in the normal state in β-pyrochlore materials, AOs2O6 (A = Cs, Rb and K). In Cs material, large enhancement of the quasiparticle (QP) scattering time, τ, is observed at low temperatures, whereas there is no such enhancement in Rb and K materials. This indicates that rattling motion is absent in Cs material, whether in K and Rb materials it plays the role as a scatterer for QPs. In Rb materials, we find charge excitation possibly originated from the rattling motion.

KW - Cavity perturbation

KW - Millimeter-wave conductivity

KW - Rattling

KW - Superconductivity

KW - β-Pyrochlore compounds

UR - http://www.scopus.com/inward/record.url?scp=78649750406&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=78649750406&partnerID=8YFLogxK

U2 - 10.1016/j.physc.2009.11.102

DO - 10.1016/j.physc.2009.11.102

M3 - Article

AN - SCOPUS:78649750406

VL - 470

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

IS - SUPPL.1

ER -