Collapse of the Spin-Singlet Phase in Quantum Dots

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DOIResolve DOI: http://doi.org/10.1103/PhysRevLett.88.256804
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TypeArticle
Journal titlePhysical Review Letters
Volume88
Issue25
Pages256804
AbstractWe present experimental and theoretical results on a new regime in quantum dots in which the filling factor two-singlet state is replaced by new spin polarized phases. We make use of spin blockade spectroscopy to identify the transition to this new regime as a function of the number of electrons. The key experimental observation is a reversal of the phase in the systematic oscillation of the amplitude of Coulomb blockade peaks as the number of electrons is increased above a critical number. It is found theoretically that correlations are crucial to the existence of the new phases.
Publication date
AffiliationNational Research Council Canada; NRC Institute for Microstructural Sciences
Peer reviewedNo
NPARC number12744403
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Record identifier81d19db1-036f-4572-a923-dc3ca3ffc7d3
Record created2009-10-27
Record modified2016-05-09
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