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In this work, we demonstrate the enlargement of the memory window of Si channel FeFET with ferroelectric Hf0.5Zr0.5O2 by gate-side dielectric interlayer engineering. By inserting an Al2O3 dielectric interlayer between TiN gate metal and…

The field-effect technique, popular thanks to its application in common field-effect transistors, is here applied to metallic thin films by using as a dielectric a novel polymer electrolyte solution. The maximum injected surface charge,…

Mesoscale and Nanoscale Physics · Physics 2013-12-10 M. Tortello , A. Sola , Kanudha Sharda , F. Paolucci , J. R. Nair , C. Gerbaldi , D. Daghero , R. S. Gonnelli

In this work, we present a performance analysis of Field Effect Transistors based on recently fabricated 100% hydrogenated graphene (the so-called graphane) and theoretically predicted semi-hydrogenated graphene (i.e. graphone). The…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 Gianluca Fiori , S. Lebègue , A. Betti , P. Michetti , M. Klintenberg , O. Eriksson , Giuseppe Iannaccone

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

Ferroelectric polarization switching, achieved by mechanical forces, enables the storage of stress information in ferroelectrics, and holds promise for human-interfacing applications. The prevailing mechanical approach is locally induced…

The FeSe superconductor and its related systems have attracted much attention in the iron-based superconductors owing to their simple crystal structure and peculiar electronic and physical properties. The bulk FeSe superconductor has a…

Superconductivity · Physics 2015-06-24 Xu Liu , Lin Zhao , Shaolong He , Junfeng He , Defa Liu , Daixiang Mou , Bing Shen , Yong Hu , Jianwei Huang , X. J. Zhou

Atomic-scale ferroelectrics are of great interest for high-density electronics, particularly field-effect transistors, low-power logic, and nonvolatile memories. We devised a film with a layered structure of bismuth oxide that can stabilize…

In this study, InSb nanowires have been formed by electrodeposition and integrated into NW-FETs. NWs were formed in porous anodic alumina (PAA) templates, with the PAA pore diameter of approximately 100 nm defining the NW diameter.…

Mesoscale and Nanoscale Physics · Physics 2015-05-28 Suprem R. Das , Collin J. Delker , Dmitri Zakharov , Yong P. Chen , Timothy D. Sands , David B. Janes

Here we report the properties of field-effect transistors based on few layers of chemical vapor transport grown alpha- MoTe_2 crystals mechanically exfoliated onto SiO_2. We performed field-effect and Hall mobility measurements, as well as…

The injection of spin polarized electrons from ferromagnetic metals (Fe and Co) into gallium nitride (GaN) via scanning tunneling microscopy (STM) is demonstrated. Electrons from STM tips are injected into the semiconductor. Net circular…

Mesoscale and Nanoscale Physics · Physics 2009-09-25 C. J. Hill , X. Cartoixa , R. A. Beach , D. L. Smith , T. C. McGill

To realize room temperature ferromagnetic semiconductors is still a challenge in spintronics. Recent experiments have obtained two-dimensional (2D) room temperature ferromagnetic metals, such as monolayer MnSe2. In this paper, we proposed a…

Materials Science · Physics 2024-05-21 Jia-Wen Li , Gang Su , Bo Gu

The absence of a band gap in graphene restricts its straight forward application as a channel material in field effect transistors. In this letter, we report on a new approach to engineer a band gap in graphene field effect devices (FED) by…

Materials Science · Physics 2009-11-13 T. J. Echtermeyer , M. C. Lemme , M. Baus , B. N. Szafranek , A. K. Geim , H. Kurz

Paraelectrical tuning of a charge carrier density as high as 10$^{13}$\,cm$^{-2}$ in the presence of a high electronic carrier mobility on the delicate surfaces of correlated oxides, is a key to the technological breakthrough of a field…

Organic semiconductors are usually not thought to show outstanding performance in highly-integrated, sub 100 nm transistors. Consequently, single-crystalline materials such as SWCNTs, MoS2 or inorganic semiconductors are the material of…

Applied Physics · Physics 2019-10-02 Jakob Lenz , Fabio del Giudice , Fabian R. Geisenhof , Felix Winterer , R. Thomas Weitz

We use a frequency-dependent electro-optic technique to measure the hole mobility in small molecule organic semiconductors, such as 6,13 bis(triisopropylsilylethynyl)-pentacene. Measurements are made on semiconductor films in bottom gate,…

Materials Science · Physics 2012-12-20 Emily G. Bittle , Joseph W. Brill , Joseph P. Straley

Identifying materials and devices which offer efficient thermoelectric effects at low temperature is a major obstacle for the development of thermal management strategies for low-temperature electronic systems. Superconductors cannot offer…

Mesoscale and Nanoscale Physics · Physics 2014-09-04 F. Giazotto , J. W. A. Robinson , J. S. Moodera , F. S. Bergeret

Two-dimensional (2D) multiferroics have been casted great attention owing to their promising prospects for miniaturized electronic and memory devices.Here, we proposed a highly stable 2D multiferroic, VOF monolayer, which is an intrinsic…

Materials Science · Physics 2021-12-22 Shaowen Xu , Fanhao Jia , Guodong Zhao , Wei Wu , Wei Ren

Theoretical predictions are made for the current-voltage characteristics of two-dimensional heterojunction interlayer tunneling field-effect transistors (Thin-TFETs), focusing on the magnitude of the current that is achievable in such…

Mesoscale and Nanoscale Physics · Physics 2017-09-22 Jun Li , Yifan Nie , Kyeongjae Cho , Randall M. Feenstra

In this paper we study the size effects of the ferroelectric nanotube phase diagrams and polar properties allowing for effective surface tension and depolarization field influence. The approximate analytical expression for the…

Materials Science · Physics 2007-05-23 A. N. Morozovska , M. D. Glinchuk , E. A. Eliseev

Phase engineering by strains in 2D semiconductors is of great importance for a variety of applications. Here, we present a study of strain induced ferroelectric (FE) transition on bismuth oxyselenide (Bi$_2$O$_2$Se) films, a…

Materials Science · Physics 2023-03-07 Mengqi Wu , Zhefeng Lou , Chen-Min Dai , Tao Wang , Jiaqi Wang , Ziye Zhu , Zhuokai Xu , Tulai Sun , Wenbin Li , Xiaorui Zheng , Xiao Lin