Tailoring the electronic properties of silicon with cysteine: A first-principles study

被引:6
作者
Cucinotta, CS [1 ]
Ruini, A
Catellani, A
Caldas, MJ
机构
[1] Univ Modena, CNR, INFM, Natl Ctr Nanostruct & Biosyst Surfaces, I-41100 Modena, Italy
[2] Univ Modena, Dipartimento Fis, I-41100 Modena, Italy
[3] CNR, IMEM, I-43010 Parma, Italy
[4] Univ Sao Paulo, Inst Fis, BR-05508900 Sao Paulo, Brazil
关键词
D O I
10.1103/PhysRevB.72.245310
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We discuss the electronic structure modifications induced on the dihydride-terminated Si(001) surface upon cysteine adsorption by means of ab initio calculations: several stable functionalization schemes are presented, providing different routes for biological recognition, surface nanostructuring, and biomolecular electronics applications. The resulting hybrid systems are discussed and compared in terms of stability, structural, and electronic properties. Based on our results, we propose STM and photoemission experiments to determine unambiguously the adsorption mechanism involved and the attached functional group.
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页数:6
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