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We have varied the disorder in a two-dimensional electron system in silicon by applying substrate bias. When the disorder becomes sufficiently low, we observe the emergence of the metallic phase, and find evidence for a metal-insulator…

Strongly Correlated Electrons · Physics 2009-10-30 Dragana Popovic , A. B. Fowler , S. Washburn

We study the surface conductivity of a field-effect transistor (FET) made of periodic array of spherical semiconductor nanocrystals (NCs). We show that electrons introduced to NCs by the gate voltage occupy one or two layers of the array.…

Mesoscale and Nanoscale Physics · Physics 2014-06-11 K. V. Reich , Tianran Chen , B. I. Shklovskii

A heterojunction Mott field effect transistor (FET) is proposed that consists of an epitaxial channel material that exhibits an electron-correlation-induced Mott metal-to-insulator transition. The Mott material is remotely (modulation)…

Materials Science · Physics 2011-10-20 Junwoo Son , Siddharth Rajan , Susanne Stemmer , S. James Allen

Electrostatic control of the metal-insulator transition (MIT) in an oxide semiconductor could potentially impact the emerging field of oxide electronics. Vanadium dioxide is of particular interest due to the fact that the MIT happens in the…

In this paper, we propose the application of a Dual Material Gate (DMG) in a Tunnel Field Effect Transistor (TFET) to simultaneously optimize the on-current, the off-current and the threshold voltage, and also improve the average…

Mesoscale and Nanoscale Physics · Physics 2011-08-17 Sneh Saurabh , M. Jagadesh Kumar

Ultrathin (~3 quintuple layer) field-effect transistors (FETs) of topological insulator Bi2Se3 are prepared by mechanical exfoliation on 300nm SiO2/Si susbtrates. Temperature- and gate-voltage dependent conductance measurements show that…

Mesoscale and Nanoscale Physics · Physics 2012-01-19 Sungjae Cho , Nicholas P. Butch , Johnpierre Paglione , Michael S. Fuhrer

Modern electronics are developing electronic-optical integrated circuits, while their electronic backbone, e.g. field-effect transistors (FETs), remains the same. However, further FET down scaling is facing physical and technical…

Optics · Physics 2020-06-02 Jason K. Marmon , Satish C. Rai , Kai Wang , Weilie Zhou , Yong Zhang

Electrostatic carrier doping using a field-effect-transistor structure is an intriguing approach to explore electronic phases by critical control of carrier concentration. We demonstrate the reversible control of the insulator-metal…

Materials Science · Physics 2015-05-13 H. Nakamura , H. Tomita , H. Akimoto , R. Matsumura , I. H. Inoue , T. Hasegawa , K. Kono , Y. Tokura , H. Takagi

The dielectric engineered tunnel field-effect transistor (DE-TFET) as a high performance steep transistor is proposed. In this device, a combination of high-k and low-k dielectrics results in a high electric field at the tunnel junction. As…

Mesoscale and Nanoscale Physics · Physics 2015-10-23 Hesameddin Ilatikhameneh , Tarek A. Ameen , Gerhard Klimeck , Joerg Appenzeller , Rajib Rahman

We have developed nano-scale double-gated field-effect-transistors for the study of electron states and transport properties of single deliberately-implanted phosphorus donors. The devices provide a high-level of control of key parameters…

Fundamental physical properties limiting the performance of spin field effect transistors are compared to those of ordinary (charge-based) field effect transistors. Instead of raising and lowering a barrier to current flow these spin…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Kimberley C. Hall , Michael E. Flatté

Molecular transistors have the potential for switching with lower gate voltages than conventional field-effect transistors. We have calculated the performance of a single-molecule device in which there is interference between electron…

Mesoscale and Nanoscale Physics · Physics 2016-07-28 Ying Li , Jan Mol , Simon Benjamin , Andrew Briggs

Layered semiconductors show promise as channel materials for field-effect transistors (FETs). Usually, such devices incorporate solid back or top gate dielectrics. Here, we explore de-ionized (DI) water as a solution top gate for…

Mesoscale and Nanoscale Physics · Physics 2017-06-01 Yuan Huang , Eli Sutter , Peter Sutter

Tunnel Field Effect Transistors (TFET) have extremely low leakage current, exhibit excellent subthreshold swing and are less susceptible to short channel effects. However, TFETs do face certain special challenges, particularly with respect…

Mesoscale and Nanoscale Physics · Physics 2010-10-19 Sneh Saurabh , M. Jagadesh Kumar

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…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Xiaohui Wang

We propose a concept for a graphene tunnel field-effect transistor. The main idea is based on the use of two graphene electrodes with zigzag termination divided by a narrow gap under the influence of the common gate. Our analysis shows that…

Mesoscale and Nanoscale Physics · Physics 2014-02-07 V. L. Katkov , V. A. Osipov

Quantum mechanical effects induced by the miniaturization of complementary metal-oxide-semiconductor (CMOS) technology hamper the performance and scalability prospects of field-effect transistors. However, those quantum effects, such as…

Using a field-effect transistor (FET) configuration with solid Li-ion conductor (SIC) as gate dielectric, we have successfully tuned carrier density in FeSe$_{0.5}$Te$_{0.5}$ thin flakes, and the electronic phase diagram has been mapped…

Superconductivity · Physics 2017-05-31 C. S. Zhu , J. H. Cui , B. Lei , N. Z. Wang , C. Shang , F. B. Meng , L. K. Ma , X. G. Luo , T. Wu , Z. Sun , X. H. Chen

The electric field induced quantum phase transition from topological to conventional insulator has been proposed as the basis of a topological field effect transistor [1-4]. In this scheme an electric field can switch 'on' the ballistic…

We propose and investigate a spin transistor device consisting of two ferromagnetic leads connected by a two-dimensional topological insulator as the channel material. It exploits the unique features of the topological spin-helical edge…

Mesoscale and Nanoscale Physics · Physics 2016-10-31 Xianbo Xiao , Ying Liu , Zhengfang Liu , Guoping Ai , Shengyuan A. Yang , Guanghui Zhou