activity
20052023
most citedCarrier dynamics in epitaxial graphene close to the Dirac point

313 citations · 3.6k across the 92 of their papers we have counts for

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Showing 2009Show all

8 papers · 1 filter

cond-mat.mtrl-sci2009★ 14 cited

Memory effect of MnGe nanomagnets embedded inside a Mn-diluted Ge matrix

Shengqiang Zhou, Artem Shalimov, Kay Potzger +5

Crystalline Mn5Ge3 nanomagnets are formed inside a Mn-diluted Ge matrix using Mn ion implantation. A temperature-dependent memory effect and slow magnetic relaxation are observed b…

cond-mat.mtrl-sci2009★ 18 cited

Anomalous Hall resistance in Ge:Mn systems with low Mn concentrations

Shengqiang Zhou, Danilo Buerger, Manfred Helm +1

Taking Mn doped Germanium as an example, we evoke the consideration of a two-band-like conduction in diluted ferromagnetic semiconductor (FMS). The main argument for claiming Ge:Mn…

cond-mat.mtrl-sci2009★ 181 cited

Crystallographically oriented Co and Ni nanocrystals inside ZnO formed by ion implantation and postannealing

Shengqiang Zhou, K. Potzger, J. von Borany +4

In the last decade, transition-metal-doped ZnO has been intensively investigated as a route to room-temperature diluted magnetic semiconductors (DMSs). However, the origin for the…

cond-mat.mtrl-sci2009★ 55 cited

Fe-implanted ZnO: Magnetic precipitates versus dilution

Shengqiang Zhou, K. Potzger, G. Talut +9

Nowadays ferromagnetism is often found in potential diluted magnetic semiconductor systems. However, many authors argue that the observed ferromagnetism stems from ferromagnetic pr…

cond-mat.mtrl-sci2009★ 41 cited

Ferromagnetism and suppression of metallic clusters in Fe implanted ZnO - a phenomenon related to defects?

Shengqiang Zhou, K. Potzger, G. Talut +7

We investigated ZnO(0001) single crystals annealed in high vacuum with respect to their magnetic properties and cluster formation tendency after implant-doping with Fe. While metal…

cond-mat.mtrl-sci2009★ 19 cited

Suppression of secondary phase formation in Fe implanted ZnO single crystals

K. Potzger, Shengqiang Zhou, H. Reuther +5

Unwanted secondary phases are one of the major problems in diluted magnetic semiconductor creation. Here, the authors show possibilities to avoid such phases in Fe implanted and po…