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Pregled bibliografske jedinice broj: 232047

Extrinsic origin of the insulating behavior of polygrain icosahedral Al-Pd-Re quasicrystals


Dolinšek, J.; McGuiness, P.J.; Klanjšek, M.; Smiljanić, Igor; Smontara, Ana; Zijlstra, E.S.; Bose, S. K.; Fisher, I.R.; Kramer, M.J.; Canfield, P. C.
Extrinsic origin of the insulating behavior of polygrain icosahedral Al-Pd-Re quasicrystals // Physical Review B, 74 (2006), 13; 134201-1 (međunarodna recenzija, članak, znanstveni)


Naslov
Extrinsic origin of the insulating behavior of polygrain icosahedral Al-Pd-Re quasicrystals

Autori
Dolinšek, J. ; McGuiness, P.J. ; Klanjšek, M. ; Smiljanić, Igor ; Smontara, Ana ; Zijlstra, E.S. ; Bose, S. K. ; Fisher, I.R. ; Kramer, M.J. ; Canfield, P. C.

Izvornik
Physical Review B (1098-0121) 74 (2006), 13; 134201-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Al-based quasicrystals; electronic transport properties; variable-range hopping conductivity; porous structure

Sažetak
Polygrain icosahedral i-Al-Pd-Re quasicrystals are known to exhibit dramatically different electronic transport properties to other Al-based quasicrystals. By performing comparative experimental and theoretical studies of the electronic transport and electronic structure of polygrain and monocrystalline i-Al-Pd-Re samples, we show that the extraordinarily high electrical resistivity and the metal-to-insulator transition in the polygrain material are not intrinsic properties of the quasiperiodic lattice, but are of extrinsic origin due to the high porosity and the oxygen-rich weakly insulating regions in the material. We also compare theoretical electronic structures and experimental electrical resistivities of monocrystalline i-Al-Pd-Re and i-Al-Pd-Mn quasicrystals and show that there are no significant differences between these two isomorphous compounds, suggesting that i-Al-Pd-Re is on common ground with other Al-based quasicrystals. We present a structural model of i-Al-Pd-Re.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
0035013

Ustanove
Institut za fiziku, Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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