Hostname: page-component-8448b6f56d-42gr6 Total loading time: 0 Render date: 2024-04-16T21:14:08.428Z Has data issue: false hasContentIssue false
  • English
  • Français

Nanoscale Heat Transport in Self-Organized Ge Clusters on Si(001)

Published online by Cambridge University Press:  21 February 2013

Tim Frigge ,
Annika Kalus ,
Friedrich Klasing ,
Martin Kammler ,
Anja Hanisch-Blicharski  and
Michael Horn-von Hoegen
Tim Frigge
Affiliation:
Department of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, D- 47057 Duisburg, Germany
Annika Kalus
Affiliation:
Department of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, D- 47057 Duisburg, Germany
Friedrich Klasing
Affiliation:
Department of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, D- 47057 Duisburg, Germany
Martin Kammler
Affiliation:
Department of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, D- 47057 Duisburg, Germany
Anja Hanisch-Blicharski
Affiliation:
Department of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, D- 47057 Duisburg, Germany
Michael Horn-von Hoegen
Affiliation:
Department of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, D- 47057 Duisburg, Germany
Get access

Abstract

Ultrafast time resolved transmission electron diffraction (TED) in a reflection geometry was used to study the cooling behavior of self-organized, well defined nanoscale germanium hut and dome clusters on Si(001). The clusters were heated in a pump-probe scheme by fs-laser pulses. The resulting transient temperature rise was then determined from the drop in diffraction intensity caused by the Debye-Waller effect. From a cooling time of τ =177 ps we estimated a strongly reduced heat transfer compared with homogeneous films of equivalent thickness.

Keywords

nanostructurethermal conductivityRHEED
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1456: Symposium JJ – Nanoscale Thermoelectrics 2012—Materials and Transport Phenomena , 2012 , mrss12-1456-jj05-08
Copyright
Copyright © Materials Research Society 2013

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Cahill, D. G. et al. .: Nanoscale thermal transport, Journal of Appl. Phys. 93, 793 (2003)10.1063/1.1524305CrossRefGoogle Scholar
Sootsman, J. R., Chung, D. Young and Kanatzidis, M.G., Alte und neue Konzepte für thermoelektrische Materialien, Angewandte Chemie 121, 8768 (2009)10.1002/ange.200900598CrossRefGoogle Scholar
Kapitza, P. L.: Heat Transfer and Superfluidity of Helium II, Phys. Rev. 60, 354 (1941)10.1103/PhysRev.60.354CrossRefGoogle Scholar
Mo, Y.-W., Savage, D. E., Swartzentruber, B. S. and Lagally, M. G.: Kinetic pathway in Stranski-Krastanov growth of Ge on Si(001), Phys. Rev. Lett. 65, 1020 (1990)10.1103/PhysRevLett.65.1020CrossRefGoogle Scholar
Ross, F. M., Tromp, R. M. and Reuter, M. C.: Transition States Between Pyramids and Domes During Ge/Si Island Growth, Science 286, 1931 (1999)10.1126/science.286.5446.1931CrossRefGoogle ScholarPubMed
Kästner, M. and Voigtländer, B.: Kinetically Self-Limiting Growth of Ge Islands on Si(001), Phys. Rev. Lett. 82, 2745 (1999)10.1103/PhysRevLett.82.2745CrossRefGoogle Scholar
Eaglesham, D. J. and Cerullo, M.: Dislocation-free Stranski-Krastanow growth of Ge on Si(100), Phys. Rev. Lett. 64, 1943 (1990)10.1103/PhysRevLett.64.1943CrossRefGoogle Scholar
Chaparro, S.A. et al. .: Strain-Driven Alloying in Ge/Si(100) Coherent Islands, Phys. Rev. Lett. 83, 1199 (1999)10.1103/PhysRevLett.83.1199CrossRefGoogle Scholar
Janzen, A., Krenzer, B., Zhou, P., von der Linde, D. and Horn-von Hoegen, M.: Ultrafast electron diffraction at surfaces after laser excitation, Surf. Sci. 600, 4094 (2006)10.1016/j.susc.2006.02.070CrossRefGoogle Scholar
Sokolowski-Tinten, K. and Shymanovich, et al. .: Energy relaxation and anomalies in the thermo-acoustic response of femtosecond laser-excited Germanium, Springer, Berlin, 2006.10.1364/UP.2006.MG5CrossRefGoogle Scholar