Abstract
We report two-dimensional (2D) electron and hole gases induced at the surface of graphite by the electric field effect. The 2D gases reside within a few near-surface atomic layers and exhibit mobilities up to 15000 and 60000cm2/Vs at room and liquid-helium temperatures, respectively. The mobilities imply ballistic transport on μm scale. Pronounced Shubnikov-de Haas oscillations reveal the existence of two types of charge carries in both electron and hole gases. © 2005 The American Physical Society.
Original language | English |
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Article number | 201401 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 72 |
Issue number | 20 |
DOIs | |
Publication status | Published - 15 Nov 2005 |
Keywords
- films