Journal
PHYSICAL REVIEW B
Volume 88, Issue 8, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.88.085322
Keywords
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Funding
- Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan [22103005]
- [22740196]
- Grants-in-Aid for Scientific Research [22103005] Funding Source: KAKEN
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We investigate charge transport of pn and npn junctions made from silicene, a Si analogue of graphene. The conductance shows the distinct gate-voltage dependencies peculiar to the topological and nontopological phases, where the topological phase transition is caused by external electric field. Namely, the conductance is (not) suppressed in the np (nn) regime when both sides are topological, and in the nn (np) regime when one side is topological and the other side is nontopological. Furthermore, we find that the conductance is almost quantized to be 0, 1, and 2. Our findings will open a new way to nanoelectronics based on silicene.
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