Shot noise spectroscopy on a semiconductor quantum dot in the elastic and inelastic cotunneling regimes

Yuma Okazaki; Satoshi Sasaki; Koji Muraki

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Shot noise spectroscopy on a semiconductor quantum dot in the elastic and inelastic cotunneling regimes

机译：弹性和非弹性共隧道技术中半导体量子点上的散粒噪声光谱

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041302-1%We report shot noise spectroscopy on a semiconductor quantum dot in a cotunneling regime. The dc conductance measurements show clear signatures of both elastic and inelastic cotunneling transport inside a Coulomb diamond. We observed Poissonian shot noise with the Fano factor F ≈ 1 in the elastic cotunneling regime, and super-Poissonian Fano factor 1 < F < 3 in the inelastic cotunneling regime. The differences in the value of the Fano factor between elastic and inelastic processes reveal the microscopic mechanisms involved in the cotunneling transport.

机译：041302-1％我们报告了在共隧道技术中对半导体量子点的散粒噪声光谱。直流电导测量结果显示库仑钻石内部的弹性和非弹性共同隧穿传输都具有明显的特征。我们观察到在弹性协同作用下的泊松弹丸噪声具有Fano因子F≈1，而在非弹性协同作用下的超级泊松Fano因子1

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来源
《Physical review》 |2013年第4期|50-54|共5页
作者
Yuma Okazaki; Satoshi Sasaki; Koji Muraki;
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作者单位

NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan,Department of Physics, Tohoku University, Sendai, Miyagi 980-8578, Japan;

NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan,Department of Physics, Tohoku University, Sendai, Miyagi 980-8578, Japan;

NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi, Kanagawa 243-0198, Japan;

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正文语种 eng
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关键词
quantum dots;

机译：量子点;

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2. Conductance and shot noise of inelastic tunneling through a quantum dot in the Kondo regime [J] . Xu QQ, Xiong SJ Physics Letters, A . 2007,第5期

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3. Inelastic electron scattering off a quantum dot in the cotunneling regime: The signature of mesoscopic Stoner instability [J] . E. V. Repin, I. S. Burmistrov Physical review. B, Condensed Matter And Materals Physics . 2016,第16期

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4. Ferromagnetic lead effects on inelastic cotunneling current and shot noise of an interacting quantum dot [C] . Bing Dong, X. L. Lei, Norman J. M. Horing International Conference on the Physics of Semiconductors . 2007

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5. Shot noise, phase and dephasing of a quantum dot [D] . Zarchin, Oren 2008

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7. Shot noise spectroscopy on a semiconductor quantum dot in the elastic and inelastic cotunneling regimes [O] . Yuma Okazaki, Satoshi Sasaki, Koji Muraki 2013

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8. Ballistic Electron Emission Spectroscopy Study of Transport through SemiconductorQuantum Wells and Quantum Dots [R] . Narayanamurti, V. 1997

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Shot noise spectroscopy on a semiconductor quantum dot in the elastic and inelastic cotunneling regimes

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