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High performance enhancement mode semiconducting carbon nanotube field-effect transistors (CNTFETs) are obtained by combining ohmic metal-tube contacts, high dielectric constant HfO2 films as gate insulators, and electrostatically doped…

Mesoscale and Nanoscale Physics · Physics 2015-06-24 Ali Javey , Jing Guo , Damon B. Farmer , Qian Wang , Dunwei Wang , Roy G. Gordon , Mark Lundstrom , Hongjie Dai

Two dimensional (2D) crystal heterostructures are shown to possess a unique opportunity for novel THz nonlinear devices. In contrast to the oxide tunneling barrier, the uniformity of 2D insulators in the thickness control provides an ideal…

Materials Science · Physics 2015-06-12 B. D. Kong , C. Zeng , D. K. Gaskill , K. L. Wang , K. W. Kim

It is thought that strong electron correlation in an insulating parent phase would enhance a critical temperature (Tc) of superconductivity in a doped phase via enhancement of the binding energy of a Cooper pair as known in high-Tc…

Superconductivity · Physics 2016-04-14 Kota Hanzawa , Hikaru Sato , Hidenori Hiramatsu , Toshio Kamiya , Hideo Hosono

In this work, we demonstrate a silicon nanocrystal Field Effect Transistor (ncFET). Its operation is similar to that of a Tunnelling Field Effect Transistor (TFET) with two barriers in series. The tunnelling barriers are fabricated in very…

Mesoscale and Nanoscale Physics · Physics 2014-05-20 Patrick Harvey-Collard , Dominique Drouin , Michel Pioro-Ladrière

Quantum engineering entails atom by atom design and fabrication of electronic devices. This innovative technology that unifies materials science and device engineering has been fostered by the recent progress in the fabrication of vertical…

Materials Science · Physics 2018-03-20 Giuseppe Iannaccone , Francesco Bonaccorso , Luigi Colombo , Gianluca Fiori

Ferroelectric field-effect transistors (FeFET) with two-dimensional (2D) semiconductor channels are promising low-power, embedded non-volatile memory (NVM) candidates for next-generation in-memory computing. However, the performance of…

InAs/GaSb and similar materials systems have generated great interest as a heterojunction for tunnel field effect transistors (TFETs) due to favorable band alignment. However, little is currently understood about how such TFETs are affected…

Mesoscale and Nanoscale Physics · Physics 2014-07-02 Ryan M. Iutzi , Eugene A. Fitzgerald

Monolayer WSe2 is a two dimensional (2D) semiconductor with a direct bandgap, and it has been recently explored as a promising material for electronics and optoelectronics. Low field effect mobility is the main constraint preventing WSe2…

Materials Science · Physics 2016-05-02 Bilu Liu , Yuqiang Ma , Anyi Zhang , Liang Chen , Ahmad N. Abbas , Yihang Liu , Chenfei Shen , Haochuan Wan , Chongwu Zhou

Designing tunneling junctions with abrupt on-off characteristics and high current densities is critical for many different devices including backward diodes and tunneling field effect transistors (TFETs). It is possible to get a sharp, high…

Mesoscale and Nanoscale Physics · Physics 2014-11-03 Sapan Agarwal , Eli Yablonovitch

A novel method to fabricate large-area superconducting hybrid tunnel junctions with a suspended central normal metal part is presented. The samples are fabricated by combining photo-lithography and chemical etch of a superconductor -…

A dual mode device behaving either as a field-effect transistor or a single electron transistor (SET) has been fabricated using silicon-on-insulator metal oxide semiconductor technology. Depending on the back gate polarisation, an electron…

Mesoscale and Nanoscale Physics · Physics 2012-05-17 Benoît Roche , Benoit Voisin , Xavier Jehl , Romain Wacquez , Marc Sanquer , Maud Vinet , Veeresh Deshpande , Bernard Previtali

The celebrated electronic properties of graphene have opened way for materials just one-atom-thick to be used in the post-silicon electronic era. An important milestone was the creation of heterostructures based on graphene and other…

Unlike covalent two-dimensional (2D) materials like graphene, 2D metals have non-layered structures due to their non-directional, metallic bonding. While experiments on 2D metals are still scarce and challenging, density-functional theory…

Materials Science · Physics 2023-01-06 Kameyab Raza Abidi , Pekka Koskinen

The recent progress in nanosheet transistors has established two-dimensional (2D) semiconductors as viable candidates for future ultra-scaled electronic devices. Next to reducing contact resistance, identifying good gate dielectrics is a…

Advanced microelectronics in the future may require semiconducting channel materials beyond silicon. Two-dimensional (2D) semiconductors, characterized by their atomically thin thickness, hold immense promise for high-performance electronic…

Recent development in fabrication technology of planar two-dimensional (2D) materials has brought up possibilities of numerous novel applications. Our recent analysis has revealed that by definition of p-n junctions through appropriate…

Mesoscale and Nanoscale Physics · Physics 2014-01-21 B. Gharekhanlou , S. Khorasani , R. Sarvari

Electrically tuning long-range magnetic orders has been realized in two-dimensional (2D) semiconductors via electrostatic doping. On the other hand, the observations are highly diverse: the transition can be realized by either electrons or…

Materials Science · Physics 2022-12-21 Yan Lu , Haonan Wang , Li Wang , Li Yang

By means of numerical simulation, we study in this work the effects of uniaxial strain on transport properties of strained graphene heterojunctions and explore the possibility to achieve good performance of graphene transistors using these…

Mesoscale and Nanoscale Physics · Physics 2014-04-03 Viet Hung Nguyen , Huy Viet Nguyen , Philippe Dollfus

Scalable substitutional doping of two-dimensional (2D) transition metal dichalcogenides (TMDCs) is a prerequisite to developing next-generation logic and memory devices based on 2D materials. To date, doping efforts are still nascent. Here,…

The discovery of a two-dimensional electron gas (2DEG) at the interface between insulating oxides has led to a well-deserved level of excitement due to possible applications as "in-plane" all-oxide nanoelectronics. Here we expand the range…

Materials Science · Physics 2009-09-16 J. D. Burton , J. P. Velev , E. Y. Tsymbal
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