MnGe magnetic nanocolumns and nanowells

Xiu, Faxian, Wang, Yong, Wong, Kin, Zhou, Yi, Kou, Xufeng, Zou, Jin and Wang, Kang L. (2010) MnGe magnetic nanocolumns and nanowells. Nanotechnology, 21 25: 255602-1-255602-6. doi:10.1088/0957-4484/21/25/255602

Author Xiu, Faxian
Wang, Yong
Wong, Kin
Zhou, Yi
Kou, Xufeng
Zou, Jin
Wang, Kang L.
Title MnGe magnetic nanocolumns and nanowells
Journal name Nanotechnology   Check publisher's open access policy
ISSN 0957-4484
Publication date 2010-06
Sub-type Article (original research)
DOI 10.1088/0957-4484/21/25/255602
Volume 21
Issue 25
Start page 255602-1
End page 255602-6
Total pages 6
Place of publication Temple Back, Bristol, United Kingdom
Publisher Institute of Physics Publishing
Collection year 2011
Language eng
Formatted abstract
We report a 'superlattice' growth method to produce well-aligned magnetic MnGe nanocolumns and nanowells by using low-temperature molecular-beam epitaxy. Both structural and magnetic properties show strong evidence of Mn5Ge3 precipitates and lattice-coherent nanostructures with different blocking temperatures. Magnetotransport measurements reveal positive and negative magnetoresistances for the nanowells and nanocolumns, respectively. This distinction can be explained by different spin scattering mechanisms under magnetic fields. Our results suggest a new growth strategy to achieve reproducible MnGe nanostructures, which facilitates the development of Ge-based spintronics and magnetoelectronics devices.
* © IOP Publishing 2011
Keyword Condensed matter: electrical, magnetic and optical
Surfaces, interfaces and thin films
Nanoscale science and low-D systems
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article number 255602

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Created: Sun, 20 Jun 2010, 00:02:52 EST