Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2010-03-16
Solid State Commun. 105, 2065 (2010)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
12 pages, 4 figures
Scientific paper
We show how nanostructuring of a metallic gate on a field-effect transistor (FET) can lead to a macroscopic, robust and voltage controlled quantum state in the electron channel of a FET. A chain of triple quantum dot molecules created by gate structure realizes a spin-half Heisenberg chain with spin-spin interactions alternating between ferromagnetic and anti-ferromagnetic. The quantum state is a semiconductor implementation of an integer spin-one antiferromagnetic Heisenberg chain with a unique correlated ground state and a finite energy gap, originally conjectured by Haldane.
Hawrylak Pawel
Hsieh Chang-Yu
Sharma Anand
Shim Yun-Pil
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