Two dimensional phonon-drag thermopower in Si0.87Ge0.13/Si (001) heterostructure grown by MBE
UNSPECIFIED (2000) Two dimensional phonon-drag thermopower in Si0.87Ge0.13/Si (001) heterostructure grown by MBE. In: 3rd International Conference on Low Dimensional Structures and Devices (LDSD 99), SEP 15-17, 1999, ANTALYA, TURKEY.Full text not available from this repository.
Results of thermoelectric power measurements are presented for two dimensional hole gas (2DHG) formed at the normal interface of modulation boron doped Si/Si0.87Ge0.13 /(001) Si fully strained heterostructure for the first time in the temperature range 1.5 to 25 K. The modulation-doped 2DHG sample has carrier sheet density p(s) of 2 x 10(11) cm(-2) and its mobility value mu is 1.11 x 10(4) cm(2) V-1 s(-1) at liquid He-4 temperature. The thermoelectric power is found to be dominated by the phonon drag contribution. A fit to phonon-drag thermopower theory yields a value of 5.5 eV for the screened acoustic phonon deformation potential. A Kohn anomaly is observed at similar to 3.5+/-0.5 K. (C) 2000 Elsevier Science B.V. All rights reserved.
|Item Type:||Conference Item (UNSPECIFIED)|
|Subjects:||T Technology > TK Electrical engineering. Electronics Nuclear engineering
Q Science > QC Physics
|Journal or Publication Title:||MICROELECTRONIC ENGINEERING|
|Publisher:||ELSEVIER SCIENCE BV|
|Number of Pages:||8|
|Page Range:||pp. 527-534|
|Title of Event:||3rd International Conference on Low Dimensional Structures and Devices (LDSD 99)|
|Location of Event:||ANTALYA, TURKEY|
|Date(s) of Event:||SEP 15-17, 1999|
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