- Email: [email protected]
Si(001) by means of RHEED-LEED-AES
A373 Surface Soence 145 (1984) 261-268 North-Holland, Amsterdam STUDY OF SUPERSTRUCTURES RHEED-LEED-AES
261 ON Sn/Si(001)
BY M E A N S O F
K a z u y u k l U E D A a n d Ketjl K I N O S H I T A Department of Apphed Phvst~s Osal~a Umverslt~ Smta, Osaka 56~ Japan and Mlchduko MANNAMI Department of Engmeertng Sttente, Kvoto Umt,ersttv, Kvoto 606, Japan received 2 April 1984, accepted for pubhcatlon 8 June 1984 Epltaxml growth of the Sn/Sl(O01) system has been studied by means of RHEED-LEED-AES measurements Four kinds of superstructure, c(4 X 4), (6 × 2), c(8 × 4) and (5 × 1), are observed on Sn-evaporated S~(001) after heat treatments at temperatures above 500°C The amount of Sn atoms decreases by heating These superstructures are formed depending not on the lmtml coverage of Sn but on the amount of Sn atoms after heat treatment
Surface Science 145 (1984) 269-280 North-Holland, Amsterdam
269
THE ASYMPTOTIC INTERACTION BETWEEN H, H 2 OR G A S A T O M A N D T H E S U R F A C E O F N a C I , KC! O R M g O * Suckmln CHUNG
and Milton W
A NOBLE
COLE
104 Davey Laboratory, Department of Physws, The Pennsylvania State Umoerstty, Unwerstty Park, Pennsyloama 16802, USA Received 27 March 1984, accepted for pubhcatlon 16 May 1984 A study ~s presented of the lnteractton between the gases H, Ha, He, Ne, Ar, Kr, Xe and the surfaces KCI, NaCI, and MgO First, we calculate the coeffictent C3 of the asymptotic interaction V - - C3z -3, using the frequency dependent polartzablhty and dielectric functmns Next, we show that these results can be accurately predicted with a very simple form of these functions Tlus allows extension to other systems We then examine the correlation between C3 and the measured elgenvalue E 0 of the most strongly bound vtbratlonal state Specific attention is paid to the adsorptmn of He on NaCI, where we attempt to resolve amblgmty about the value of E 0 A brief dlscussmn of multdayer He films is provided
Surface Science 145 (1984) 281-293 North-Holland, Amsterdam THE DISPERSION !. L o c a l t h e o r y *
FORCE OF PHYSICAL
281 ADSORPTION
Xue-Pel JIANG Department of Phvst~s The Pennsvh,ama State Umverstt~ University. Parl, Pennsvh,ama 16802 USA
261 ON Sn/Si(001)
BY M E A N S O F
K a z u y u k l U E D A a n d Ketjl K I N O S H I T A Department of Apphed Phvst~s Osal~a Umverslt~ Smta, Osaka 56~ Japan and Mlchduko MANNAMI Department of Engmeertng Sttente, Kvoto Umt,ersttv, Kvoto 606, Japan received 2 April 1984, accepted for pubhcatlon 8 June 1984 Epltaxml growth of the Sn/Sl(O01) system has been studied by means of RHEED-LEED-AES measurements Four kinds of superstructure, c(4 X 4), (6 × 2), c(8 × 4) and (5 × 1), are observed on Sn-evaporated S~(001) after heat treatments at temperatures above 500°C The amount of Sn atoms decreases by heating These superstructures are formed depending not on the lmtml coverage of Sn but on the amount of Sn atoms after heat treatment
Surface Science 145 (1984) 269-280 North-Holland, Amsterdam
269
THE ASYMPTOTIC INTERACTION BETWEEN H, H 2 OR G A S A T O M A N D T H E S U R F A C E O F N a C I , KC! O R M g O * Suckmln CHUNG
and Milton W
A NOBLE
COLE
104 Davey Laboratory, Department of Physws, The Pennsylvania State Umoerstty, Unwerstty Park, Pennsyloama 16802, USA Received 27 March 1984, accepted for pubhcatlon 16 May 1984 A study ~s presented of the lnteractton between the gases H, Ha, He, Ne, Ar, Kr, Xe and the surfaces KCI, NaCI, and MgO First, we calculate the coeffictent C3 of the asymptotic interaction V - - C3z -3, using the frequency dependent polartzablhty and dielectric functmns Next, we show that these results can be accurately predicted with a very simple form of these functions Tlus allows extension to other systems We then examine the correlation between C3 and the measured elgenvalue E 0 of the most strongly bound vtbratlonal state Specific attention is paid to the adsorptmn of He on NaCI, where we attempt to resolve amblgmty about the value of E 0 A brief dlscussmn of multdayer He films is provided
Surface Science 145 (1984) 281-293 North-Holland, Amsterdam THE DISPERSION !. L o c a l t h e o r y *
FORCE OF PHYSICAL
281 ADSORPTION
Xue-Pel JIANG Department of Phvst~s The Pennsvh,ama State Umverstt~ University. Parl, Pennsvh,ama 16802 USA