The role of the surface phases in surface conductivity

✍ Scribed by D.A Tsoukanov; S.V Ryzhkov; D.V Gruznev; V.G Lifshits

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 77 KB
• Volume: 162-163
• Category: Article
• ISSN: 0169-4332
• DOI: 10.1016/s0169-4332(00)00187-2

✦ Synopsis

The surface conductivity of the samples with AurSi 100 , NarSi 100 and HrSi 100 surface phases was measured in ultra-high vacuum by four-point probe method at RT. We have found that difference in surface conductivity of the silicon Ž . Ž .

y5 y1

Ž . Ž . substrate with surface phase and clean Si 100 2 = 1 surface is 6.0 " 1.9 = 10 V I for c 8 = 2 -Au, 11.1 " 0.8 = y5 y1

Ž .

y 5 y 1 10 V I for 626 = 3-Au and -1.5 " 0.8 = 10 V I for 3 = 2-Na surface phase. These variations of surface conductivity are estimated to originate, in general, from the formation of the surface phases.