Lattice dynamics in Sn nanoislands and cluster-assembled films

被引：8

作者：

Houben, Kelly ^{[1
]}

Couet, Sebastien ^{[2
]}

Trekels, Maarten ^{[2
]}

Menendez, Enric ^{[2
,8
]}

Peissker, Tobias ^{[1
]}

Seo, Jin Won ^{[3
]}

Hu, Michael Y. ^{[4
]}

Zhao, Jiyong Y. ^{[4
]}

Alp, Esen E. ^{[4
]}

Roelants, Sam ^{[5
]}

Partoens, Bart ^{[5
]}

Milosevic, Milorad V. ^{[5
]}

Peeters, Francois M. ^{[5
]}

Bessas, Dimitrios ^{[6
,9
]}

Brown, Simon A. ^{[7
]}

Vantomme, Andre ^{[2
]}

Temst, Kristiaan ^{[2
]}

Van Bael, Margriet J. ^{[1
]}

机构：

[1] Lab Solid State Phys & Magnetism, Celestijnenlaan 200 D, B-3001 Leuven, Belgium

[2] Inst Kern Stralingsfys, Celestijnenlaan 200 D, B-3001 Leuven, Belgium

[3] Katholieke Univ Leuven, Dept Mat Engn, Kasteelpk Arenberg 44, B-3001 Leuven, Belgium

[4] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

[5] Univ Antwerp, Dept Fys, Groenenborgerlaan 171, B-2020 Antwerp, Belgium

[6] European Synchrotron Radiat Facil, F-38043 Grenoble, France

[7] Univ Canterbury, Dept Phys & Astron, Private Bag 4800, Christchurch, New Zealand

[8] Univ Autonoma Barcelona, Dept Fis, Fac Ciencies, E-08193 Bellaterra, Spain

[9] Delft Univ Technol, Dept Radiat Sci & Technol, Fundamental Aspects Mat & Energy, Mekelweg 15, NL-2629 JB Delft, Netherlands

来源：

PHYSICAL REVIEW B | 2017年 / 95卷 / 15期

关键词：

DENSITY-OF-STATES; PHASE-TRANSITION; BETA-SN; SUPERCONDUCTIVITY; MOSSBAUER; PHONONS; SURFACES; PSEUDOPOTENTIALS; SCATTERING; TIN;

D O I：

10.1103/PhysRevB.95.155413

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To unravel the effects of phonon confinement, the influence of size and morphology on the atomic vibrations is investigated in Sn nanoislands and cluster-assembled films. Nuclear resonant inelastic x-ray scattering is used to probe the phonon densities of states of the Sn nanostructures which show significant broadening of the features compared to bulk phonon behavior. Supported by ab initio calculations, the broadening is attributed to phonon scattering and can be described within the damped harmonic oscillator model. Contrary to the expectations based on previous research, the appearance of high-energy modes above the cutoff energy is not observed. From the thermodynamic properties extracted from the phonon densities of states, it was found that grain boundary Sn atoms are bound by weaker forces than bulk Sn atoms.

引用

页数：11

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