A field-effect transistor has been constructed that employs a perovskite-type SrTiO3 single crystal as the semiconducting channel. This device functions as an n-type accumulation-mode device. The device was fabricated at room temperature by sputter-deposition of amorphous Al2O3 films as a gate insulator on the SrTiO3 substrate. The field-effect (FE) mobility is 0.1 cm2/V s and on-off ratio exceeds 100 at room temperature. The temperature dependence of the FE mobility down to 2 K shows a thermal-activation-type behavior with an activation energy of 0.6 eV. © 2003 American Institute of Physics.
Published in:
Applied Physics Letters
(Volume:83
,
Issue:
9
)
Date of Publication:
Sep 2003
- Page(s):
-
1755
-
1757
- ISSN :
-
0003-6951
- Digital Object Identifier :
-
10.1063/1.1605806
- Product Type:
-
Journals & Magazines
- Date of Current Version :
-
18 June 2009
- Issue Date :
-
Sep 2003