EMP Formation in the Co(II) Doped ZnTe Nanowires

Abstract

Co(II) doped ZnTe nanowires are prepared by a thermal evaporation method. The power and temperature dependent micro-photoluminescence spectra of single nanowire demonstrate the double bands near its band edge, and the ferromagnetism behavior for these nanowires is identified. The occurrence of excitonic magnetic polaron (EMP) can account for the second emission band for its higher binding energy and ferromagnetic coupling. This EMP formation in a nanostructure will facilitate to realize magnetic modulation on confined excitons and will find new applications for spinpolarized nanophotonic devices.

One-step synthesis of nail-like Mn-doped CdS/CdBr2 hetero-nanostructures for potential lasing application

“…The band-edge PL emission of nanostructure shows a redshift trend with increasing excitation power (figure 4(a)), which could be obviously seen in the plot of the PL peak position versus laser excitation power (figure 4(b)). With the increase of the excitation power, a large number of photoinduced carriers and intrinsic bound charges within S-Cd-Br pairs are responsible for the bandgap reductions of composite nail, at the same time, accompanied with large electron-phonon coupling, strong electron screening and scattering around heterostructure [46,47]. Therefore, the emission bands from such bound excitons have a significant redshift with powers, but the near IR emission band at 720 nm of the nanowire as a function of the excitation power did not change.…”

Atomic‐Ordering‐Induced Modulated Properties of Zigzag ZnTe Nanotubes

“…[35,36] For instance, transitionmetal-doped ZnTe nanostructures have shown appealing magnetic and fluorescent properties. [37][38][39][40][41][42] From this discussions, it is clear that various ZnTe nanostructures are important for practical applications due to the emergence of important properties.…”

О возможных состояниях кристаллической структуры, предшествующих фазовому переходу в кристаллах Zn-=SUB=-1-x-=/SUB=-V-=SUB=-x-=/SUB=-Se (0.01≤ x≤0.10)

“…x B VI (Me 3d = V, Cr, Mn, Fe и др., B VI = O, S, Se, Te) принято относить к разбавленным магнитным полупроводникам (РМП), известным своими уникальными электронными и магнитооптическими свойствами, широко используемыми на практике [1][2][3]. Попытки применить перечисленные выше РМП для создания элементов полупроводниковой спинтроники [4,5] сместили сегодня акцент на исследование объектов с пониженной размерностью, появление свидетельств о высокотемпературном ферромагнетизме которых в последнее время участилось в печати [6][7][8][9][10]. Поэтому детальное изучение свойств легированных 3d-ионами соединений II-VI остается актуальным.…”