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Spin blockade with spin singlet electrons
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10.1063/1.4773304
/content/aip/journal/apl/101/26/10.1063/1.4773304
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/26/10.1063/1.4773304
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic diagrams for the mechanism of (a) a conventional Pauli spin blockade and (b) a singlet spin blockade. (c) Excitation energy spectrum for (0,2) states, measured at . The first current strip exhibits the (0,2) state evolution among the solid line of the (0,2)S state, the dashed line of the (0,2)T state, and the dotted line for another (0,2)S state. (d) charge diagram at B = 0 T. SB is relieved at , indicated with an arrow, where the transition channel from (1,1)T to (0,2)T opens.

Image of FIG. 2.
FIG. 2.

plots under the magnetic fields of (a) 2.0 T, (b) 3.0 T, (c) 4.0 T, (d) 5.0 T, (e) 6.2 T, and (f) 7.4 T. Scales are the same as in Fig. 1(d). The arrows mark the threshold of SB/SSB. At 5.0 T, SB is completely relieved and only the Coulomb blockade region is left. (g) Plots of energy difference between the ground and excited (0,2) states, . Circles indicate data extracted from Fig. 1(c), and triangles are data from the series of Coulomb diamond measurements shown in (a)-(f). measured as (Fig. 1(c)) and ((a)-(f)) are converted to energy using the voltage drop ratio of three tunneling barriers. (h) curve along the dashed line in (f). A leakage current of 10 pA is observed in the SSB region.

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/content/aip/journal/apl/101/26/10.1063/1.4773304
2012-12-28
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Spin blockade with spin singlet electrons
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/26/10.1063/1.4773304
10.1063/1.4773304
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