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Direct detection of spontaneous polarization in Wurtzite GaAs nanowires
Bauer, Benedikt, Hubmann, Joachim, Lohr, Matthias, Reiger, Elisabeth, Bougeard, Dominique and Zweck, Josef (2014) Direct detection of spontaneous polarization in Wurtzite GaAs nanowires. Applied Physics Letters 104 (211902).Date of publication of this fulltext: 04 Jun 2014 09:58
Article
DOI to cite this document: 10.5283/epub.30075
Abstract
We demonstrate the direct detection of spontaneous polarization in the wurtzite crystal phase of gallium-arsenide (GaAs) nanowires. Using differential phase contrast microscopy (DPC) in a scanning transmission electron microscope, we map the differences in charge distribution between the zinc-blende and wurtzite crystal phases and use twin defects in the zinc-blende phase to quantify the ...
We demonstrate the direct detection of spontaneous polarization in the wurtzite crystal phase of gallium-arsenide (GaAs) nanowires. Using differential phase contrast microscopy (DPC) in a scanning transmission electron microscope, we map the differences in charge distribution between the zinc-blende and wurtzite crystal phases and use twin defects in the zinc-blende phase to quantify the polarization strength. The value of 2.7 x 10(-3) C/m(2) found for the polarization strength matches well with theoretical predictions. (C) 2014 AIP Publishing LLC.
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| Item type | Article | ||||
| Journal or Publication Title | Applied Physics Letters | ||||
| Publisher: | AMER INST PHYSICS | ||||
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| Place of Publication: | MELVILLE | ||||
| Volume: | 104 | ||||
| Number of Issue or Book Chapter: | 211902 | ||||
| Date | 27 May 2014 | ||||
| Institutions | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Chair Professor Back > Group Josef Zweck | ||||
| Identification Number |
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| Keywords | HETEROSTRUCTURES; MICROSCOPY; | ||||
| Dewey Decimal Classification | 500 Science > 530 Physics | ||||
| Status | Published | ||||
| Refereed | Yes, this version has been refereed | ||||
| Created at the University of Regensburg | Yes | ||||
| URN of the UB Regensburg | urn:nbn:de:bvb:355-epub-300756 | ||||
| Item ID | 30075 |
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