Phonon-glass electron-crystal thermoelectric clathrates: Experiments and theory

Toshiro Takabatake, Koichiro Suekuni, Tsuneyoshi Nakayama, Eiji Kaneshita

Research output: Contribution to journalArticle

203 Citations (Scopus)

Abstract

Type-I clathrate compounds have attracted a great deal of interest in connection with the search for efficient thermoelectric materials. These compounds constitute networked cages consisting of nanoscale tetrakaidecahedrons (14-hedrons) and dodecahedrons (12-hedrons), in which the group-1 or -2 elements in the periodic table are encaged as so-called rattling guest atoms. It is remarkable that, although these compounds have a crystalline cubic structure, they exhibit glasslike phonon thermal conductivity over the whole temperature range depending on the states of rattling guest atoms in the tetrakaidecahedron. In addition, these compounds show unusual glasslike specific heats and terahertz-frequency phonon dynamics, providing a remarkable broad peak almost identical to those observed in amorphous materials or structural glasses, the so-called boson peak. An efficient thermoelectric effect is realized in compounds showing these glasslike characteristics. In this decade, a number of experimental works dealing with type-I clathrate compounds have been published. These are diffraction, thermal, and spectroscopic experiments in addition to those based on heat and electronic transport. These form the raw materials for this review based on advances from this decade. The subject of this review involves interesting phenomena from the viewpoint not only of physics but also of the practical problem of elaborating efficient thermoelectric materials. This review presents a survey of a wide range of experimental investigations of type-I clathrate compounds, together with a review of theoretical interpretations of the peculiar thermal and dynamic properties observed in these materials.

Original languageEnglish
Article number669
Pages (from-to)669-716
Number of pages48
JournalReviews of Modern Physics
Volume86
Issue number2
DOIs
Publication statusPublished - Jun 4 2014

Fingerprint

clathrates
thermoelectric materials
glass
crystals
electrons
amorphous materials
dynamic characteristics
atoms
thermal conductivity
bosons
thermodynamic properties
specific heat
heat
physics
electronics
diffraction
temperature

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Phonon-glass electron-crystal thermoelectric clathrates : Experiments and theory. / Takabatake, Toshiro; Suekuni, Koichiro; Nakayama, Tsuneyoshi; Kaneshita, Eiji.

In: Reviews of Modern Physics, Vol. 86, No. 2, 669, 04.06.2014, p. 669-716.

Research output: Contribution to journalArticle

Takabatake, Toshiro ; Suekuni, Koichiro ; Nakayama, Tsuneyoshi ; Kaneshita, Eiji. / Phonon-glass electron-crystal thermoelectric clathrates : Experiments and theory. In: Reviews of Modern Physics. 2014 ; Vol. 86, No. 2. pp. 669-716.
@article{28765269b7b04603b2789c5440f8de24,
title = "Phonon-glass electron-crystal thermoelectric clathrates: Experiments and theory",
abstract = "Type-I clathrate compounds have attracted a great deal of interest in connection with the search for efficient thermoelectric materials. These compounds constitute networked cages consisting of nanoscale tetrakaidecahedrons (14-hedrons) and dodecahedrons (12-hedrons), in which the group-1 or -2 elements in the periodic table are encaged as so-called rattling guest atoms. It is remarkable that, although these compounds have a crystalline cubic structure, they exhibit glasslike phonon thermal conductivity over the whole temperature range depending on the states of rattling guest atoms in the tetrakaidecahedron. In addition, these compounds show unusual glasslike specific heats and terahertz-frequency phonon dynamics, providing a remarkable broad peak almost identical to those observed in amorphous materials or structural glasses, the so-called boson peak. An efficient thermoelectric effect is realized in compounds showing these glasslike characteristics. In this decade, a number of experimental works dealing with type-I clathrate compounds have been published. These are diffraction, thermal, and spectroscopic experiments in addition to those based on heat and electronic transport. These form the raw materials for this review based on advances from this decade. The subject of this review involves interesting phenomena from the viewpoint not only of physics but also of the practical problem of elaborating efficient thermoelectric materials. This review presents a survey of a wide range of experimental investigations of type-I clathrate compounds, together with a review of theoretical interpretations of the peculiar thermal and dynamic properties observed in these materials.",
author = "Toshiro Takabatake and Koichiro Suekuni and Tsuneyoshi Nakayama and Eiji Kaneshita",
year = "2014",
month = "6",
day = "4",
doi = "10.1103/RevModPhys.86.669",
language = "English",
volume = "86",
pages = "669--716",
journal = "Reviews of Modern Physics",
issn = "0034-6861",
publisher = "American Physical Society",
number = "2",

}

TY - JOUR

T1 - Phonon-glass electron-crystal thermoelectric clathrates

T2 - Experiments and theory

AU - Takabatake, Toshiro

AU - Suekuni, Koichiro

AU - Nakayama, Tsuneyoshi

AU - Kaneshita, Eiji

PY - 2014/6/4

Y1 - 2014/6/4

N2 - Type-I clathrate compounds have attracted a great deal of interest in connection with the search for efficient thermoelectric materials. These compounds constitute networked cages consisting of nanoscale tetrakaidecahedrons (14-hedrons) and dodecahedrons (12-hedrons), in which the group-1 or -2 elements in the periodic table are encaged as so-called rattling guest atoms. It is remarkable that, although these compounds have a crystalline cubic structure, they exhibit glasslike phonon thermal conductivity over the whole temperature range depending on the states of rattling guest atoms in the tetrakaidecahedron. In addition, these compounds show unusual glasslike specific heats and terahertz-frequency phonon dynamics, providing a remarkable broad peak almost identical to those observed in amorphous materials or structural glasses, the so-called boson peak. An efficient thermoelectric effect is realized in compounds showing these glasslike characteristics. In this decade, a number of experimental works dealing with type-I clathrate compounds have been published. These are diffraction, thermal, and spectroscopic experiments in addition to those based on heat and electronic transport. These form the raw materials for this review based on advances from this decade. The subject of this review involves interesting phenomena from the viewpoint not only of physics but also of the practical problem of elaborating efficient thermoelectric materials. This review presents a survey of a wide range of experimental investigations of type-I clathrate compounds, together with a review of theoretical interpretations of the peculiar thermal and dynamic properties observed in these materials.

AB - Type-I clathrate compounds have attracted a great deal of interest in connection with the search for efficient thermoelectric materials. These compounds constitute networked cages consisting of nanoscale tetrakaidecahedrons (14-hedrons) and dodecahedrons (12-hedrons), in which the group-1 or -2 elements in the periodic table are encaged as so-called rattling guest atoms. It is remarkable that, although these compounds have a crystalline cubic structure, they exhibit glasslike phonon thermal conductivity over the whole temperature range depending on the states of rattling guest atoms in the tetrakaidecahedron. In addition, these compounds show unusual glasslike specific heats and terahertz-frequency phonon dynamics, providing a remarkable broad peak almost identical to those observed in amorphous materials or structural glasses, the so-called boson peak. An efficient thermoelectric effect is realized in compounds showing these glasslike characteristics. In this decade, a number of experimental works dealing with type-I clathrate compounds have been published. These are diffraction, thermal, and spectroscopic experiments in addition to those based on heat and electronic transport. These form the raw materials for this review based on advances from this decade. The subject of this review involves interesting phenomena from the viewpoint not only of physics but also of the practical problem of elaborating efficient thermoelectric materials. This review presents a survey of a wide range of experimental investigations of type-I clathrate compounds, together with a review of theoretical interpretations of the peculiar thermal and dynamic properties observed in these materials.

UR - http://www.scopus.com/inward/record.url?scp=84901930935&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84901930935&partnerID=8YFLogxK

U2 - 10.1103/RevModPhys.86.669

DO - 10.1103/RevModPhys.86.669

M3 - Article

AN - SCOPUS:84901930935

VL - 86

SP - 669

EP - 716

JO - Reviews of Modern Physics

JF - Reviews of Modern Physics

SN - 0034-6861

IS - 2

M1 - 669

ER -