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  • Kumar, SandeepLund University,Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH (author)

Magnetic polarons and large negative magnetoresistance in GaAs nanowires implanted with Mn ions

  • Article/chapterEnglish2013

Publisher, publication year, extent ...

  • 2013-10-09
  • Washington, United States :American Chemical Society (ACS),2013
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:lnu-28028
  • https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-28028URI
  • https://doi.org/10.1021/nl402229rDOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-25041URI
  • https://lup.lub.lu.se/record/4143690URI

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  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • We report on low-temperature magnetotransport and SQUID measurements on heavily doped Mn-implanted GaAs nanowires. SQUID data recorded at low magnetic fields exhibit clear signs of the onset of a spin-glass phase with a transition temperature of about 16 K. Magnetotransport experiments reveal a corresponding peak in resistance at 16 K and a remarkably large negative magnetoresistance, reaching 40 % at 1.6 K and 8 T. The negative magnetoresistance decreases at elevated temperatures and vanishes at about 100 K. We interpret our transport data in terms of spin-dependent hopping in a complex magnetic nanowire landscape of magnetic polarons forming a paramagnetic/spin-glass phase.

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  • Paschoal, Waldomiro,1977-Lund University,Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)ftf-wdp (author)
  • Johannes, AndreasInstitute for Solid State Physics, Friedrich-Schiller-University Jena,Institute for Solid State Physics, Jena University, Jena, Germany (author)
  • Jacobsson, DanielLund University,Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)ftf-dlj (author)
  • Borschel, ChristianInstitute for Solid State Physics, Friedrich-Schiller-University Jena,Institute for Solid State Physics, Jena University, Jena, Germany (author)
  • Pertsova, Anna,1985-Linnéuniversitetet,Institutionen för fysik och elektroteknik (IFE),Linneaus University, Kalmar, Sweden(Swepub:lnu)anpeaa (author)
  • Wang, Chih-HanInstitute of Physics, Academia Sinica, Taipei, Taiwan (author)
  • Wu, Maw-KuenInstitute of Physics, Academia Sinica, Taipei; Department of Physics, National Donghwa University, Taiwan (author)
  • Canali, Carlo M.Linnéuniversitetet,Institutionen för fysik och elektroteknik (IFE),Linneaus University, Kalmar, Sweden(Swepub:lnu)tcico (author)
  • Ronning, CarstenInstitute for Solid State Physics, Friedrich-Schiller-University Jena,Institute for Solid State Physics, Jena University, Jena, Germany (author)
  • Samuelson, LarsLund University,Lunds universitet,Fasta tillståndets fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Solid State Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)ftf-lsa (author)
  • Pettersson, Håkan,1962-Högskolan i Halmstad,Halmstad Embedded and Intelligent Systems Research (EIS),Solid State Physics/The Nanometer Structure Consortium, Lund University, Lund, Sweden(Swepub:hh)hape (author)
  • Fasta tillståndets fysikFysiska institutionen (creator_code:org_t)

Related titles

  • In:Nano letters (Print)Washington, United States : American Chemical Society (ACS)13:11, s. 5079-50841530-69841530-6992

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