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We investigate the superconducting properties of molybdenum disulphide (MoS$_2$) monolayer across a broad doping range, successfully recreating the so far unresolved superconducting dome. Our first-principles findings reveal several…

Superconductivity · Physics 2024-12-05 Nina Girotto Erhardt , Jan Berges , Samuel Poncé , Dino Novko

The observation of helical surface states in Bi-based three-dimensional topological insulators has been a challenge since their theoretical prediction. The main issue raises when the Fermi level shifts deep into the bulk conduction band due…

Mesoscale and Nanoscale Physics · Physics 2021-02-18 Shaham Jafarpisheh , An Ju , Kevin Janßen , Takashi Taniguchi , Kenji Watanabe , Christoph Stampfer , Bernd Beschoten

Density functional theory calculations are used to show that it is possible to dope semiconducting transition metal dichalcogenides (TMD) such as MoS$_2$ and WS$_2$ with electrons and/or holes either by chemical substitution or by…

Mesoscale and Nanoscale Physics · Physics 2014-09-16 A. Carvalho , A. H. Castro Neto

Tuneable electronic properties in transition metal dichalcogenides (TMDs) are essential to further their use in device applications. Here, we present a comprehensive scanning tunnelling microscopy and spectroscopy study of a doping-induced…

Strongly Correlated Electrons · Physics 2025-01-30 Andreas Ørsted , Alessandro Scarfato , Céline Barreteau , Enrico Giannini , Christoph Renner

Recently, an experimental study developed an efficient way to obtain sulfur-doped gamma-graphdiyne. This study has shown that this new material could have promising applications in lithium-ion batteries, but the complete understanding of…

Materials Science · Physics 2020-05-12 Eliezer Fernando Oliveira , Augusto Batagin-Neto , Douglas Soares Galvao

In an earlier work, it was shown that the dispersion of the van der Waals heterostructures (vdWHs) of graphene monolayer on 2D transition metal dichalcogenide (GrTMD) substrate comprises of the spin-split, gapped bands. Using these it was…

Mesoscale and Nanoscale Physics · Physics 2018-04-20 Partha Goswami

The recent demonstration of resonant tunneling transport in nitride semiconductors has led to an invigorated effort to harness this quantum transport regime for practical applications. In polar semiconductors, however, the interplay between…

Applied Physics · Physics 2023-03-16 Jimy Encomendero , Vladimir Protasenko , Farhan Rana , Debdeep Jena , Huili Grace Xing

Work function-mediated charge transfer in graphene/$\alpha$-RuCl$_3$ heterostructures has been proposed as a strategy for generating highly-doped 2D interfaces. In this geometry, graphene should become sufficiently doped to host surface and…

Nanoscale control of charge doping in two-dimensional (2D) materials permits the realization of electronic analogs of optical phenomena, relativistic physics at low energies, and technologically promising nanoelectronics. Electrostatic…

We present the discovery of a charge density wave (CDW) ground state in heavily electron-doped molybdenum disulfide (MoS$_2$). This is the first observation of a CDW in any $d^2$ (column 6) transition metal dichalcogenide (TMD). The band…

Zincblende copper iodide has been attracting growing interest as p-type semiconductor for applications in transparent electronics and transparent thermoelectrics. A key step towards technological applications is the possibility to enhance…

Materials Science · Physics 2022-12-22 Michael Seifert , Miguel A. L. Marques , Silvana Botti

The problem of a spatially discontinuous diffusion coefficient ($D(\boldsymbol x)$) is one that may be encountered in hydrogeologic systems due to natural geological features or as a consequence of numerical discretization of flow…

Computational Physics · Physics 2020-07-03 Michael J. Schmidt , Nicholas B. Engdahl , Stephen D. Pankavich , Diogo Bolster

This paper depicts the actual variation of gate induced drain leakage current with impurity doping concentration by complete qualitative and quantitative approach. De Casteljaus algorithm is applied to describe the band to band tunneling in…

Mesoscale and Nanoscale Physics · Physics 2019-04-11 Arnesh Sen , Jayoti Das

We demonstrate the application of two-photon absorption transient current technique to wide bandgap semiconductors. We utilize it to probe charge transport properties of single-crystal Chemical Vapor Deposition (scCVD) diamond. The charge…

Instrumentation and Detectors · Physics 2021-01-22 C. Dorfer , D. Hits , L. Kasmi , G. Kramberger , M. Lucchini , M. Mikuz , R. Wallny

We have modified the metal-assisted transfer technique to obtain large-area few-layer flakes from transition metal dichalcogenides bulk crystals by introducing an initial stage - exfoliation of the bulk crystal onto an intermediate…

Materials Science · Physics 2024-09-10 T. A. Kamenskaya , I. A. Eliseyev , V. Yu. Davydov , A. Yu. Kuntsevich

We report field-effect transistors (FETs) with single-crystal molybdenum disulfide (MoS2) channels synthesized by chemical vapor deposition (CVD). For a bilayer MoS2 FET, the mobility is ~17 cm2V-1s-1 and the on/off current ratio is ~108,…

Materials Science · Physics 2015-06-15 Wei Wu , Debtanu De , Su-Chi Chang , Yanan Wang , Haibing Peng , Jiming Bao , Shin-Shem Pei

Dielectrophoresis is an electric field-based technique for moving neutral particles through a fluid. When used for particle separation, dielectrophoresis has many advantages compared to other methods, providing label-free operation with…

Mono- and few-layer transition-metal dichalcogenides (TMDCs) provide opportunities for ideal two-dimensional semiconductors for electronic and optoelectronic devices. For electronic devices on TMDCs, it is essential to incorporate n- and/or…

Materials Science · Physics 2019-08-14 Sehoon Oh , June Yeong Lim , Seongil Im , Hyoung Joon Choi

In this paper, we introduce two new methods of mitigating decoder error propagation for low-latency sliding window decoding (SWD) of spatially coupled low density parity check (SC-LDPC) codes. Building on the recently introduced idea of…

Information Theory · Computer Science 2020-04-21 Min Zhu , David G. M. Mitchell , Michael Lentmaier , Daniel J. Costello

We investigate transport in phosphorus-doped buried-channel metal-oxide-semiconductor field-effect transistors at temperatures between 10 and 295 K. In a range of doping concentration between around 2.1 and 8.7 x 1017 cm-3, we find that a…