{"title":"Electrons in Crystals","authors":"S. Rezende","doi":"10.1017/cbo9781139031783.003","DOIUrl":"https://doi.org/10.1017/cbo9781139031783.003","url":null,"abstract":"","PeriodicalId":187466,"journal":{"name":"The Quantum Nature of Materials","volume":"352 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124455424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Crystals","authors":"Hui Zhao","doi":"10.1142/9789811242410_0003","DOIUrl":"https://doi.org/10.1142/9789811242410_0003","url":null,"abstract":"We have determined critical exponents of the order parameter in ferroelectric Sn2P2S6 and Sn2P2(Se0.28S0.72)6 crystals at the atmospheric pressure. They are equal to 0.29 0.02 for Sn2P2S6 and 0.24 0.02 for Sn2P2(Se0.28S0.72)6. These value suggest that, with changing selenium concentration from x = 0 up to x = 0.28, the solid solutions Sn2P2(SexS1–x)6 approach the conditions of tricritical point, which is realised in the vicinity of x = 0.28. The conclusion agrees well with the results of our recent works derived with the other techniques.","PeriodicalId":187466,"journal":{"name":"The Quantum Nature of Materials","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123393758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Disordered Electronic Systems","authors":"B. L. Al'tshuler, P. Lee","doi":"10.1063/1.881139","DOIUrl":"https://doi.org/10.1063/1.881139","url":null,"abstract":"The electrical conductivity of an ordinary metal such as gold is usually thought to be well understood. The electrons form a Fermi sea made up of plane waves modulated by the periodic crystal lattice. Because electrons obey Fermi statistics, only a narrow band of them, with an energy within kBT of the Fermi energy, contributes to the conductivity. At room temperature these electrons are scattered by lattice vibrations, resulting in a loss of momentum and a nonzero resistivity ρ(T). At low temperatures electron‐electron scattering is the dominant scattering mechanism. In the limiting case of zero temperature there is a residual resistivity ρ0 caused by the scattering of the electrons at the Fermi energy by lattice imperfections such as impurities and vacancies. The static defects that disrupt the translational symmetry of the crystalline lattice are the source of the disorder considered in this article.","PeriodicalId":187466,"journal":{"name":"The Quantum Nature of Materials","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1985-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130762862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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