Theory Department
Max Planck Institute of Microstructure Physics
1997    
1998    
1999    
2000    
2001    
2002    
2003    
2004    
2005    
2006    
2007    
2008    
2009    
2010    
2011    
2012    
2013    
2014    
2015    
2016    
2017    
2018    
2019    
2020    
2021    
Gierz, I., Suzuki, T., Frantzeskakis, E., Pons, S., Ostanin, S. A., Ernst, A., Henk, J., Grioni, M., Kern, K., Ast, C. R.

Silicon surface with giant spin splitting
Physical Review Letters 103, (4),pp 046803/1-4 (2009)
We demonstrate a giant Rashba-type spin splitting on a semiconducting substrate by means of a Bi-trimer adlayer on a Si(111) wafer. The in-plane inversion symmetry is broken including a giant spin splitting with a Rashba energy of about 140meV, much larger than what has prviously been reported for any semiconductor heterostructure. The separation of the electronic states is larger than their lifetime broadening, which has been directly observed with angular resolved photomission spectroscopy. The experimental results are confirmed by relativistic first-principles calculations.

TH-2009-24