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researcher

M. Helm

93 papers hereh-index 5411k citations613 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • middle author80
  • last author5

Across the 85 of 93 papers where every author was matched, so the position is known.

fields
  • cond-mat.mtrl-sci64
  • cond-mat.mes-hall11
  • physics.optics6
  • cond-mat.supr-con3
  • quant-ph3
  • cond-mat.str-el2
same name
  • M. Helm — 17 papers, h 12
  • M. Helm — 13 papers, h 13
  • M. Helm — 7 papers
  • M. Helm — 4 papers, h 3
  • M. Helm — 3 papers, h 4
  • M. Helm — 1 paper, h 0

Either other researchers who publish under this name, or the same person where the external sources have not merged their records.

identity via Semantic Scholar / OpenAlex

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

collaborators
Showing 2008Show all

2 papers · 1 filter

cond-mat.mtrl-sci2008★ 15 cited

Ferromagnetic, structurally disordered ZnO implanted with Co ions

Kay Potzger, Shengqiang Zhou, Qingyu Xu +6

We present superparamagnetic clusters of structurally highly disordered Co-Zn-O created by high fluence Co ion implantation into ZnO (0001) single crystals at low temperatures. Thi…

cond-mat.mtrl-sci2008★ 193 cited

Room temperature ferromagnetism in carbon-implanted ZnO

Shengqiang Zhou, Qingyu Xu, Kay Potzger +10

Unexpected ferromagnetism has been observed in carbon doped ZnO films grown by pulsed laser deposition [Phys. Rev. Lett. 99, 127201 (2007)]. In this letter, we introduce carbon int…

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Not affiliated with arXiv. Researcher data from Semantic Scholar (ODC-BY) and OpenAlex.