Averaged cluster approach to including chemical short-range order in KKR-CPA
Averaged cluster approach to including chemical short-range order in KKR-CPA
复制标题
在 KKR-CPA 中包含化学短程有序的平均聚类方法
DOI:
10.1103/physrevb.102.054207
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发表时间:
2020
影响因子:
3.7
通讯作者:
Widom, Michael
中科院分区:
文献类型:
--
作者:
Raghuraman, Vishnu;Wang, Yang;Widom, Michael
The single-site Korringa-Kohn-Rostoker coherent potential approximation (KKR-CPA) ignores short-range ordering present in disordered metallic systems. In this paper, we establish a technique to fix this shortcoming by embedding an averaged cluster that displays chemical short-range order (SRO). The degree of SRO can be tuned by externally defined order parameters. This averaged cluster can be embedded in the single-site CPA medium or a self-consistently obtained effective medium that contains SRO information. The validity of this method is demonstrated by applying it to two alloy systems—the CuZn body-centered cubic (BCC) solid solution, and AlCrTiV, a four-element BCC high entropy alloy. A comparison between the non-self-consistent and self-consistent modes is also provided for the two above-mentioned systems. We make the code available on the internet. Planned extensions to this paper are discussed.
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影响因子:
3.7
作者:
J. C. Flores;M. Hilke
通讯作者:
M. Hilke
影响因子:
3.7
作者:
A. Gonis;G. M. Stocks;W. Butler;H. Winter
通讯作者:
H. Winter
影响因子:
3.7
作者:
G. M. Stocks;R. G. Willams;J. Faulkner
通讯作者:
J. Faulkner
DOI:
10.1088/0305-4608/3/9/011
发表时间:
1973
期刊:
Journal of Physics F: Metal Physics
影响因子:
--
作者:
G. M. Stocks;R. Williams;J. Faulkner
通讯作者:
J. Faulkner
影响因子:
8.6
作者:
Yang Wang;G. M. Stocks;W. Shelton;D. Nicholson;Z. Szotek;W. Temmerman
通讯作者:
Yang Wang;G. M. Stocks;W. Shelton;D. Nicholson;Z. Szotek;W. Temmerman