Pauli-spin-blockade transport through a silicon double quantum dot

H W Liu, T Fujisawa, Y Ono, H Inokawa, A Fujiwara, Kei Takashina, Y Hirayama

Research output: Contribution to journalArticle

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Abstract

We present measurements of resonant tunneling through discrete energy levels of a silicon double quantum dot formed in a thin silicon-on-insulator layer. In the absence of piezoelectric phonon coupling, spontaneous phonon emission with deformation-potential coupling accounts for inelastic tunneling through the ground states of the two dots. Such transport measurements enable us to observe a Pauli spin blockade due to effective two-electron spin-triplet correlations, evident in a distinct bias-polarity dependence of resonant tunneling through the ground states. The blockade is lifted by the excited-state resonance by virtue of efficient phonon emission between the ground states. Our experiment demonstrates considerable potential for investigating silicon-based spin dynamics and spin-based quantum information processing.
Original languageEnglish
Article number073310
Number of pages4
JournalPhysical Review B
Volume77
Issue number7
DOIs
Publication statusPublished - 15 Feb 2008

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Silicon
Ground state
Semiconductor quantum dots
Resonant tunneling
quantum dots
resonant tunneling
ground state
silicon
Spin dynamics
spin dynamics
Excited states
electron spin
Electron energy levels
polarity
energy levels
insulators
Electrons
excitation
Experiments

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Liu, H. W., Fujisawa, T., Ono, Y., Inokawa, H., Fujiwara, A., Takashina, K., & Hirayama, Y. (2008). Pauli-spin-blockade transport through a silicon double quantum dot. Physical Review B, 77(7), [073310]. https://doi.org/10.1103/PhysRevB.77.073310

Pauli-spin-blockade transport through a silicon double quantum dot. / Liu, H W; Fujisawa, T; Ono, Y; Inokawa, H; Fujiwara, A; Takashina, Kei; Hirayama, Y.

In: Physical Review B, Vol. 77, No. 7, 073310, 15.02.2008.

Research output: Contribution to journalArticle

Liu, HW, Fujisawa, T, Ono, Y, Inokawa, H, Fujiwara, A, Takashina, K & Hirayama, Y 2008, 'Pauli-spin-blockade transport through a silicon double quantum dot', Physical Review B, vol. 77, no. 7, 073310. https://doi.org/10.1103/PhysRevB.77.073310
Liu, H W ; Fujisawa, T ; Ono, Y ; Inokawa, H ; Fujiwara, A ; Takashina, Kei ; Hirayama, Y. / Pauli-spin-blockade transport through a silicon double quantum dot. In: Physical Review B. 2008 ; Vol. 77, No. 7.
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