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We show that it is possible to reach one of the ultimate goals of organic electronics: producing organic field-effect transistors with trap densities as low as in the bulk of single crystals. We studied the spectral density of localized…

材料科学 · 物理学 2015-05-18 Wolfgang L. Kalb , Simon Haas , Cornelius Krellner , Thomas Mathis , Bertram Batlogg

We report the density-functional calculations that systematically clarify the stable forms of carbon-related defects and their energy levels in amorphous SiO$_2$ using the melt-quench technique in molecular dynamics. Considering the…

材料科学 · 物理学 2018-12-03 Yu-ichiro Matsushita , Atsushi Oshiyama

We report the detection of single ion impacts through monitoring of changes in the source-drain currents of field effect transistors (FET) at room temperature. Implant apertures are formed in the interlayer dielectrics and gate electrodes…

其他凝聚态物理 · 物理学 2009-11-13 A. Batra , C. D. Weis , J. Reijonen , A. Persaud , S. Cabrini , C. C. Lo , J. Bokor , T. Schenkel

A split gate technique is used to form a lateral quantum dot in a two-dimensional electron gas of a modulation-doped silicon/silicon-germanium heterostructure. e-beam lithography was employed to produce split gates. By applying negative…

We investigate a hybrid structure consisting of $20\pm4$ implanted $^{31}$P atoms close to a gate-induced silicon single electron transistor (SiSET). In this configuration, the SiSET is extremely sensitive to the charge state of the nearby…

We report on single-electron shuttling experiments with a silicon metal-oxide-semiconductor quantum dot at 300 mK. Our system consists of an accumulated electron layer at the Si/SiO_2 interface below an aluminum top gate with two additional…

量子物理 · 物理学 2015-03-19 K. W. Chan , M. Mottonen , A. Kemppinen , N. S. Lai , K. Y. Tan , W. H. Lim , A. S. Dzurak

We demonstrate single-charge occupation of ambipolar quantum dots in silicon via charge sensing. We have fabricated ambipolar quantum dot (QD) devices in a silicon metal-oxide-semiconductor heterostructure comprising a single-electron…

介观与纳米尺度物理 · 物理学 2020-05-27 A. J. Sousa de Almeida , A. Marquez Seco , T. van den Berg , B. van de Ven , F. Bruijnes , S. V. Amitonov , F. A. Zwanenburg

As semiconductor device dimensions are reduced to the nanometer scale, effects of high defect density surfaces on the transport properties become important to the extent that the metallic character that prevails in large and highly doped…

介观与纳米尺度物理 · 物理学 2011-10-17 T. Ferrus , A. Rossi , M. Tanner , G. Podd , P. Chapman , D. A. Williams

We report charge detection in degenerately phosphorus-doped silicon double quantum dots (DQD) electrically connected to an electron reservoir. The sensing device is a single electron transistor (SET) patterned in close proximity to the DQD.…

介观与纳米尺度物理 · 物理学 2015-05-19 A. Rossi , T. Ferrus , G. J. Podd , D. A. Williams

In this letter we report single-hole tunneling through a quantum dot in a two-dimensional hole gas, situated in a narrow-channel field-effect transistor in intrinsic silicon. Two layers of aluminum gate electrodes are defined on Si/SiO$_2$…

We experimentally characterise the impedance of a single electron transistor (SET) at an excitation frequency comparable to the electron tunnel rate. Differently from usual rf-SET operations, the excitation signal is applied to the gate of…

介观与纳米尺度物理 · 物理学 2015-05-30 C. Ciccarelli , A. J. Ferguson

We report measurements of charge configurations and charge transfer dynamics in a hybrid single-electron box composed of aluminum and copper. We used two single-electron transistors (SETs) to simultaneously read out different parts of the…

介观与纳米尺度物理 · 物理学 2014-07-08 Chia-Heng Sun , Po-Chen Tai , Jheng-An Jiang , Cen-Shawn Wu , Jeng-Chung Chen , Yung-Fu Chen

Gate bias stress instability in organic field-effect transistors (OFETs) is a major conceptual and device issue. This effect manifests itself by an undesirable shift of the transfer characteristics and is associated with long term charge…

材料科学 · 物理学 2015-05-28 Roger Häusermann , Bertram Batlogg

Two-dimensional (2D) layered materials-based field-effect transistors (FETs) are promising for ultimate scaled electron device applications because of the improved electrostatics to atomically thin body thickness. However, compared with the…

应用物理 · 物理学 2019-10-02 Nan Fang , Kosuke Nagashio

Single-electron transistors (SETs) have been extensively used as charge sensors in many areas such as quantum computations. In general, the signals of SETs are smaller than those of complementary metal-oxide semiconductor (CMOS) devices,…

介观与纳米尺度物理 · 物理学 2021-11-10 Tetsufumi Tanamoto , Keiji Ono

In this letter we discuss how the short channel behavior in sub 100 nm channel range can be improved by inducing a step surface potential profile at the back gate of an asymmetrical double gate (DG) Silicon-On-Insulator (SOI)…

介观与纳米尺度物理 · 物理学 2010-08-19 M. Jagadesh Kumar , G. V. Reddy

We have analyzed numerically the response and noise-limited charge sensitivity of a radio-frequency single-electron transistor (RF-SET) in a non-superconducting state using the orthodox theory. In particular, we have studied the performance…

介观与纳米尺度物理 · 物理学 2009-11-10 Valentin O. Turin , Alexander N. Korotkov

The quantum conductance of the single-electron tunneling (SET) transistor is investigated in this paper by the functional integral approach. The formalism is valid for arbitrary tunnel resistance of the junctions forming the SET transistor…

介观与纳米尺度物理 · 物理学 2009-10-31 Xiaohui Wang

Flicker or 1/f noise in metal-oxide-semiconductor field-effect transistors (MOSFETs) has been identified as the main source of noise at low frequency. It often originates from an ensemble of a huge number of charges trapping and detrapping.…

介观与纳米尺度物理 · 物理学 2010-10-22 N. Clement , K. Nishiguchi , A. Fujiwara , D. Vuillaume

The advanced nanoscale integration available in silicon complementary metal-oxide-semiconductor (CMOS) technology provides a key motivation for its use in spin-based quantum computing applications. Initial demonstrations of quantum dot…