Origin of the Hall-coefficient anisotropy in the Y–Al–Ni–Co periodic approximant to the decagonal phase. Komelj, M., Ivkov, J., Smontara, A., Gille, P., Jeglič, P., & Dolinšek, J. Solid State Communications, 149(13-14):515-518, Elsevier Ltd, 4, 2009.
Origin of the Hall-coefficient anisotropy in the Y–Al–Ni–Co periodic approximant to the decagonal phase [link]Website  abstract   bibtex   
We present an experimental and theoretical study of the anisotropic Hall coefficient RH of the Y-Al-Ni-Co periodic approximant to the decagonal phase with composition Al76Co22Ni2. Performing ab-initio calculation of RH for the original Y-Al-Ni-Co structural model [B. Zhang, V. Gramlich, W. Steurer, Z. Kristallogr. 210 (1995) 498] and its relaxed version, we reproduced the experimentally observed anisotropy for all combinations of crystalline directions of the electric current and magnetic field, where the relaxed model yielded better quantitative matching to the experiment. The origin of the anisotropic Hall coefficient is the anisotropic Fermi surface, the anisotropy of which originates from the specific stacked-layer structure of the Y-Al-Ni-Co compound and the chemical decoration of the lattice. Due to the structural similarity of Y-Al-Ni-Co to the d-Al-Ni-Co-type decagonal quasicrystals, the same physical picture explains the universal RH anisotropy of this family of quasicrystals, where RH changes sign along different crystalline directions. © 2009 Elsevier Ltd. All rights reserved.
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 title = {Origin of the Hall-coefficient anisotropy in the Y–Al–Ni–Co periodic approximant to the decagonal phase},
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 year = {2009},
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 keywords = {A. Complex intermetallics,A. Quasicrystalline approximants,D. Electronic transport,D. Hall effect},
 pages = {515-518},
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 abstract = {We present an experimental and theoretical study of the anisotropic Hall coefficient RH of the Y-Al-Ni-Co periodic approximant to the decagonal phase with composition Al76Co22Ni2. Performing ab-initio calculation of RH for the original Y-Al-Ni-Co structural model [B. Zhang, V. Gramlich, W. Steurer, Z. Kristallogr. 210 (1995) 498] and its relaxed version, we reproduced the experimentally observed anisotropy for all combinations of crystalline directions of the electric current and magnetic field, where the relaxed model yielded better quantitative matching to the experiment. The origin of the anisotropic Hall coefficient is the anisotropic Fermi surface, the anisotropy of which originates from the specific stacked-layer structure of the Y-Al-Ni-Co compound and the chemical decoration of the lattice. Due to the structural similarity of Y-Al-Ni-Co to the d-Al-Ni-Co-type decagonal quasicrystals, the same physical picture explains the universal RH anisotropy of this family of quasicrystals, where RH changes sign along different crystalline directions. © 2009 Elsevier Ltd. All rights reserved.},
 bibtype = {article},
 author = {Komelj, M. and Ivkov, Jovica and Smontara, Ana and Gille, Peter and Jeglič, P. and Dolinšek, Janez},
 journal = {Solid State Communications},
 number = {13-14}
}

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