Electron-phonon interaction and thermal boundary resistance at the interfaces of Ge2Sb2Te5 with metals and dielectrics

被引：8

作者：

Campi, D. ^{[1
]}

Baldi, E. ^{[1
]}

Graceffa, G. ^{[1
]}

Sosso, G. C. ^{[2
]}

Bernasconi, M. ^{[1
]}

机构：

[1] Univ Milano Bicocca, Dipartimento Sci Mat, Via R Cozzi 55, I-20125 Milan, Italy

[2] ETH, Dept Chem & Appl Biosci, Computat Sci, CH-6900 Lugano, Switzerland

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2015年 / 27卷 / 17期

关键词：

thermal boundary resistance; electron-phonon interaction; density functional theory; phase change materials; phase change memory; PHASE-CHANGE MATERIALS; CONDUCTIVITY; DIFFRACTION;

D O I：

10.1088/0953-8984/27/17/175009

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The Ge2Sb2Te5 compound is of interest for applications in phase change non-volatile memories. First-principles calculations of phonon dispersion relations and electron-phonon coupling constant provide an estimate of the electron-phonon contribution to the thermal boundary resistance at the interfaces of Ge2Sb2Te5 with dielectrics (silica) and metal electrodes (Al and TiN). The diffuse mismatch model including full phononic dispersion has been used to compute the phononic contribution to the thermal boundary resistance. The calculated value of the electron-phonon contribution to the TBR at 300 K of about 14 m(2)K GW(-1) would dominate the TBR at the interfaces of hexagonal Ge2Sb2Te5 with the surrounding dielectrics and metals considered here once interdiffusion at the boundaries could be minimized.

引用

收藏

页数：6

相关论文

共 32 条

[1] THEORY OF THERMAL RELAXATION OF ELECTRONS IN METALS [J].

ALLEN, PB .

PHYSICAL REVIEW LETTERS, 1987, 59 (13) :1460-1463

[2] Phonons and related crystal properties from density-functional perturbation theory [J].

Baroni, S ;

de Gironcoli, S ;

Dal Corso, A ;

Giannozzi, P .

REVIEWS OF MODERN PHYSICS, 2001, 73 (02) :515-562

[3] Thermal characterization of the SiO2-Ge2Sb2Te5 interface from room temperature up to 400 °C [J].

Battaglia, J. -L. ;

Kusiak, A. ;

Schick, V. ;

Cappella, A. ;

Wiemer, C. ;

Longo, M. ;

Varesi, E. .

JOURNAL OF APPLIED PHYSICS, 2010, 107 (04)

[4] Thermal resistance at Al-Ge2Sb2Te5 interface [J].

Battaglia, Jean-Luc ;

Schick, Vincent ;

Rossignol, Clement ;

Kusiak, Andrzej ;

Aubert, Isabelle ;

Lamperti, Alessio ;

Wiemer, Claudia .

APPLIED PHYSICS LETTERS, 2013, 102 (18)

[5] Weak antilocalization and disorder-enhanced electron interactions in annealed films of the phase-change compound GeSb2Te4 [J].

Breznay, Nicholas P. ;

Volker, Hanno ;

Palevski, Alexander ;

Mazzarello, Riccardo ;

Kapitulnik, Aharon ;

Wuttig, Matthias .

PHYSICAL REVIEW B, 2012, 86 (20)

[6] Electron-phonon interaction and thermal boundary resistance at the crystal-amorphous interface of the phase change compound GeTe [J].

Campi, Davide ;

Donadio, Davide ;

Sosso, Gabriele C. ;

Behler, Joerg ;

Bernasconi, Marco .

JOURNAL OF APPLIED PHYSICS, 2015, 117 (01)

[7] First-principles study of nitrogen doping in cubic and amorphous Ge2Sb2Te5 [J].

Caravati, S. ;

Colleoni, D. ;

Mazzarello, R. ;

Kuehne, T. D. ;

Krack, M. ;

Bernasconi, M. ;

Parrinello, M. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2011, 23 (26)

[8] Thermal conductivity and ballistic-phonon transport in the cross-plane direction of superlattices [J].

Chen, G .

PHYSICAL REVIEW B, 1998, 57 (23) :14958-14973

[9] QUANTUM ESPRESSO: a modular and open-source software project for quantum simulations of materials [J].

Giannozzi, Paolo ;

Baroni, Stefano ;

Bonini, Nicola ;

Calandra, Matteo ;

Car, Roberto ;

Cavazzoni, Carlo ;

Ceresoli, Davide ;

Chiarotti, Guido L. ;

Cococcioni, Matteo ;

Dabo, Ismaila ;

Dal Corso, Andrea ;

de Gironcoli, Stefano ;

Fabris, Stefano ;

Fratesi, Guido ;

Gebauer, Ralph ;

Gerstmann, Uwe ;

Gougoussis, Christos ;

Kokalj, Anton ;

Lazzeri, Michele ;

Martin-Samos, Layla ;

Marzari, Nicola ;

Mauri, Francesco ;

Mazzarello, Riccardo ;

Paolini, Stefano ;

Pasquarello, Alfredo ;

Paulatto, Lorenzo ;

Sbraccia, Carlo ;

Scandolo, Sandro ;

Sclauzero, Gabriele ;

Seitsonen, Ari P. ;

Smogunov, Alexander ;

Umari, Paolo ;

Wentzcovitch, Renata M. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2009, 21 (39)

[10] A consistent and accurate ab initio parametrization of density functional dispersion correction (DFT-D) for the 94 elements H-Pu [J].

Grimme, Stefan ;

Antony, Jens ;

Ehrlich, Stephan ;

Krieg, Helge .

JOURNAL OF CHEMICAL PHYSICS, 2010, 132 (15)

← 1 2 3 4 →