Ab Initio Transport Calculations for Single-Atom Copper Junctions in the Presence of Hydrogen Chloride
Ab Initio Transport Calculations for Single-Atom Copper Junctions in the Presence of Hydrogen Chloride
复制标题
氯化氢存在下单原子铜结的从头算输运计算
DOI:
10.1021/jp5093898
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发表时间:
2014
影响因子:
3.7
通讯作者:
F. Evers
中科院分区:
文献类型:
--
作者:
P. Schnäbele;R. Korytár;A. Bagrets;T. Roman;T. Schimmel;A. Gross;F. Evers
We study the transport properties of single-atom-thick Cu wires submerged in an electrochemical solvent containing HCl. As a first step, we investigate the stability of hydrogen coadsorbing with chlorine on the Cu(111) surface in an implicit electrochemical environment. We find that adding hydrogen to a Cl-covered Cu surface is energetically unfavorable. The result serves as an estimate for the number of Cl atoms that adsorb near the single-atom wire. We use it to construct model junctions (Cu wire plus adsorbates), the electron transport properties of which we investigate with density functional theory. We find that the Cl and H adsorbates tend to deplete the density of states of the Cu wire near the Fermi energy. As a consequence, the transmission is reduced. Interestingly, we observe that in the case of H-adsorption, the amount of depletion is quite sensitive to the wire geometry (relaxed vs unrelaxed), but this is not the case with Cl.
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DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
F. Evers;P. Schmitteckert
通讯作者:
P. Schmitteckert
影响因子:
1.9
作者:
Gossenberger, Florian;Roman, Tanglaw;Gross, Axel
通讯作者:
Gross, Axel
影响因子:
4.4
作者:
Arnold, A.;Weigend, F.;Evers, F.
通讯作者:
Evers, F.
影响因子:
5.5
作者:
Bagrets, Alexei
通讯作者:
Bagrets, Alexei
DOI:
10.1039/c3cp44286a
发表时间:
2013
期刊:
Physical chemistry chemical physics : PCCP
影响因子:
--
作者:
J. Wilhelm;M. Walz;M. Stendel;A. Bagrets;F. Evers
通讯作者:
F. Evers