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Transition metal dichalcogenides (TMDs) are a class of widely studied 2D layered materials which exist in various polymorphs. The 1T' phase of MoTe2 is of prime importance as it has been reported to show quantum spin hall (QSH) behavior…

Strongly Correlated Electrons · Physics 2021-07-06 Suvodeep Paul , Saheb Karak , Manasi Mandal , Ankita Ram , Sourav Marik , R. P. Singh , Surajit Saha

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

We have measured the conductivity of high-mobility (001) Si metal-oxide-semiconductor field effect transistors (MOSFETs) over wide ranges of electron densities n=(1.8-15)x10^11cm^2, temperatures T=30mK-4.2K, and in-plane magnetic fields…

Disordered Systems and Neural Networks · Physics 2013-03-05 N. N. Klimov , D. A. Knyazev , O. E. Omel'yanovskii , V. M. Pudalov , H. Kojima , M. E. Gershenson

The continued evolution of CMOS technology demands materials and architectures that emphasize low power consumption, particularly for computations involving large scale data processing and multivariable optimization. Ferroelectric materials…

Multi-bridge channel field effect transistor (MBCFET) provides several advantages over FinFET technology and is an attractive solution for sub-5 nm technology nodes. MBCFET is a natural choice for devices that use semiconducting layered…

Mesoscale and Nanoscale Physics · Physics 2022-09-14 Hitesh S , Pushkar Dasika , Kenji Watanabe , Takashi Taniguchi , Kausik Majumdar

Pentagonal PdSe2 is a promising candidate for layered electronic devices, owing to its high air-stability and anisotropic transport properties. Here, we investigate the performance of p-type FET based on PdSe$_2$ mono-layer using…

Mesoscale and Nanoscale Physics · Physics 2023-05-02 Keshari Nandan , Amit Agarwal , Somnath Bhowmick , Yogesh S. Chauhan

We consider the possibility that the electrons injected into organic field-effect transistors are strongly correlated. A single layer of acenes can be modelled by a Hubbard Hamiltonian similar to that used for the kappa-(BEDT-TTF)(2)X…

Strongly Correlated Electrons · Physics 2009-11-07 Olivier Cepas , Ross H. McKenzie

The bandgap dependence on the number of atomic layers of some families of 2D-materials, can be exploited to engineer and use lateral heterostructures (LHs) as high-performance Field-Effect Transistors (FET). This option can provide very…

Mesoscale and Nanoscale Physics · Physics 2020-01-10 Enrique G. Marin , Damiano Marian , Marta Perucchini , Gianluca Fiori , Giuseppe Iannaccone

We report on room-temperature Raman scattering measurements in few-layer crystals of exfoliated molybdenum ditelluride (MoTe$_{2}$) performed with the use of 632.8 nm (1.96 eV) laser light excitation. In agreement with recent study reported…

Two-dimensional (2D) semiconductors have attracted considerable interest for their unique physical properties. Here, we report the intrinsic cryogenic electronic transport properties in few-layer MoSe$_2$ field-effect transistors (FETs)…

Materials Science · Physics 2023-06-27 Yinjiang Shao , Jian Zhou , Ning Xu , Jian Chen , Kenji Watanabe , Takashi Taniguchi , Yi Shi , Songlin Li

We study electrical transport properties in exfoliated molybdenum disulfide (MoS2) back-gated field effect transistors at low drain bias and under different illumination intensities. It is found that photoconductive and photogating effect…

Ferroelectric field-effect transistors employ a ferroelectric material as a gate insulator, the polarization state of which can be detected using the channel conductance of the device. As a result, the devices are of potential to use in…

MoTe$_2$ is an exfoliable transition metal dichalcogenide (TMD) which crystallizes in three symmetries, the semiconducting trigonal-prismatic $2H-$phase, the semimetallic $1T^{\prime}$ monoclinic phase, and the semimetallic orthorhombic…

We study the evolution of the band-gap structure in few-layer MoTe$_2$ crystals, by means of low-temperature micro-reflectance (MR) and temperature-dependent photoluminescence (PL) measurements. The analysis of the measurements indicate…

Transition metal dichalcogenide MoS2 is a two-dimensional material, attracting much attention for next-generation applications thanks to rich functionalities stemmed from the crystal structure. Many experimental and theoretical works have…

Unlike Si, 2-dimensional (2D) Transition Metal Dichalcogenides (TMDs) offer atomically thin channels for carrier transport in FETs. Despite advantages like superior gate control, steep sub-threshold swing and high carrier mobility offered…

Applied Physics · Physics 2019-01-09 Ansh , Jeevesh Kumar , Ravi K Mishra , Srinivasan Raghavan , Mayank Shrivastava

Either in bulk form, or when exfoliated into atomically thin crystals, layered transition metal dichalcogenides are continuously leading to the discovery of new phenomena. The latest example is provided by 1T'-WTe$_2$, a semimetal recently…

Mesoscale and Nanoscale Physics · Physics 2017-08-23 Lin Wang , Ignacio Gutiérrez-Lezama , Céline Barreteau , Nicolas Ubrig , Enrico Giannini , A. F. Morpurgo

Employing flux-grown single crystal WSe$_2$, we report charge carrier scattering behaviors measured in $h$-BN encapsulated monolayer field effect transistors. We perform quantum transport measurements across various hole densities and…

Transition metal dichalcogenide field-effect transistors (FETs) have been actively explored for low-power electronics, light detection, and sensing. Albeit promising, their performance is strongly limited by low-frequency noise (LFN). Here,…

Mesoscale and Nanoscale Physics · Physics 2017-04-04 Isidoro Martinez , Mario Ribeiro , Pablo Andres , Luis E. Hueso , Felix Casanova , Farkhad G. Aliev

We report experiment and theory on an ambipolar gate-controlled Si-vacuum field effect transistor (FET) where we study electron and hole (low-temperature 2D) transport in the same device simply by changing the external gate voltage to tune…

Mesoscale and Nanoscale Physics · Physics 2015-08-04 Binhui Hu , M. M. Yazdanpanah , B. E. Kane , E. H. Hwang , S. Das Sarma