Session Z35: Focus Session: Spins in Semiconductors -- DMS: II-VI and Group IV
11:15 AM–2:27 PM, Friday, March 19, 2010
Room: E145
Sponsoring Units:
GMAG DMP FIAP
Chair: Daniel Gamelin, University of Washington
Abstract ID: BAPS.2010.MAR.Z35.5
Abstract: Z35.00005 : Optical Studies of Single Zn$_{1-x}$Mn$_x$Se Nanowires Synthesized by Chemical Vapor Deposition
12:27 PM–12:39 PM
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Abstract 
Authors:
D. M. Zhang
(Dept. of Physics, Penn State University, University Park PA 16802)
B. J. Cooley
(Dept. of Physics, Penn State University, University Park PA 16802)
H. R. Gutierrez
(Dept. of Physics, Penn State University, University Park PA 16802)
N. Samarth
(Dept. of Physics, Penn State University, University Park PA 16802)
Magnetic semiconductor nano-filaments provide interesting model systems for fundamental studies of quasi-one-dimensional spintronics [1]. Here, we report the growth and characterization of single crystal Zn$_{1-x}$Mn$_x$Se nanowires (NWs) and nanobelts fabricated on Si and quartz substrates via the vapor-solid-liquid mechanism during chemical vapor deposition. We obtain NWs that are tens of $\mu$m in length, with diameters in the range 40 nm$-$100 nm. The Mn concentration can be varied over the range $0 \leq x \leq 0.5$ by controlling the substrate temperature. We carry out Raman and photoluminescence (PL) measurements on single NWs supported over the holes of a transmission electron microscope (TEM) grid. This allows us to directly correlate optical properties with structural characteristics of the NWs obtained using TEM. Room temperature micro-Raman measurements on single NWs probe the phonon modes, while low temperature PL spectra show clear evidence for the substitutional incorporation of Mn into the ZnSe lattice. This work is supported by NSF-MRSEC.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2010.MAR.Z35.5