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101 0 _aeng
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181 0 _ai
182 0 _ab
200 1 _aLow-energy dielectric screening in Pd and PdHx systems
_fV. M. Silkin, I. P. Chernov, I. Yu. Sklyadneva [et al.]
203 _aText
_celectronic
300 _aTitle screen
330 _aModifications in dielectric properties of palladium upon absorption of hydrogen are investigated theoretically in the low-energy (0-2 eV) region. The calculations were performed with full inclusion of the electronic band structure obtained within a self-consistent pseudopotential approach. In particular, we trace the evolution of the acoustic-like plasmon (AP) found previously in clean Pd with increasing hydrogen concentration. It exists in PdHx up to the hydrogen content x corresponding to the complete filling of the 4d Pd-derived energy bands because of the presence of two kinds of carriers at the Fermi surface. At higher H concentration the AP disappears since only one kind of carrier within the sp-like energy band exists at the Fermi level. Additionally, we investigate the spatial distribution inside the crystal of a potential caused by a time-dependent external perturbation and observe drastic modifications in the screening properties in the PdHx systems with energy and with hydrogen concentration.
333 _aРежим доступа: по договору с организацией-держателем ресурса
461 _tJournal of Physics: Condensed Matter
463 _tVol. 27, iss. 5
_v[055501, 11 p.]
_d2015
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _aэкранирование
610 1 _aдиэлектрические свойства
610 1 _aпалладий
610 1 _aнизкие энергии
701 1 _aSilkin
_bV. M.
_gVyacheslav Mikhaylovich
701 1 _aChernov
_bI. P.
_cDoctor of Physical and Mathematical Sciences (DSc), Professor of the Department of General Physics of Tomsk Polytechnic University (TPU)
_f1935-
_gIvan Petrovich
_2stltpush
_3(RuTPU)RU\TPU\pers\30202
701 1 _aSklyadneva
_bI. Yu.
_gIrina Yuryevna
701 1 _aChulkov
_bE. V.
_gEvgeny Vladimirovich
701 1 _aNazarov
_bV. U.
_gVladimir
712 0 2 _aНациональный исследовательский Томский политехнический университет
_bФизико-технический институт
_bКафедра общей физики
_h136
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_c20220322
_gRCR
856 4 _uhttp://dx.doi.org/10.1088/0953-8984/27/5/055501
942 _cCF