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Ultrathin transition metal dichalcogenides (TMDCs) of Mo and W show great potential for digital electronics and optoelectronic applications. Whereas early studies were limited to mechanically exfoliated flakes, the large-area synthesis of…

Single-layer MoS2 is a direct-gap semiconductor whose electronic band structure strongly depends on the strain applied to its crystal lattice. While uniaxial strain can be easily applied in a controlled way, e.g., by bending of a flexible…

Mesoscale and Nanoscale Physics · Physics 2015-10-01 G. Plechinger , A. Castellanos-Gomez , M. Buscema , H. S. J. van der Zant , G. A. Steele , A. Kuc , T. Heine , C. Schüller , T. Korn

Understanding new superconductors requires high-quality epitaxial thin films to explore intrinsic electromagnetic properties, control grain boundaries and strain effects, and evaluate device applications. So far superconducting properties…

Atomically thin two-dimensional (2D) semiconductors such as molybdenum disulphide (MoS2) hold great promise in electrical, optical, and mechanical devices and display novel physical phenomena such as coupled spin-valley physics and the…

Heterostructures comprising of silicon (Si), molybdenum disulfide (MoS${_2}$) and graphene are investigated with respect to the vertical current conduction mechanism. The measured current-voltage (I-V) characteristics exhibit temperature…

The ability to perform efficient electrical spin injection from ferromagnetic metals into two-dimensional semiconductor crystals based on transition metal dichalcogenide monolayers is a prerequisite for spintronic and valleytronic devices…

Materials Science · Physics 2018-03-29 Thomas Garandel , Rémi Arras , Xavier Marie , Pierre Renucci , Lionel Calmels

The new generation of two-dimensional (2D) materials has shown a broad range of applications for optical and electronic devices. Understanding the properties of these materials when integrated with the more traditional three-dimensional…

Thicknesses-dependent performances of metal-multilayered semiconductor junctions have attracted increasing attention, but till present, the mechanism of interaction and the resulting charge distribution at interfaces which control the…

Materials Science · Physics 2019-10-30 Qian Wang , Yangfan Shao , Xingqiang Shi

Monolayer transition metal dichalcogenides (e.g., MoS2) exhibit exceptionally large optical nonlinearities for high-order nonlinear light generation (NLG), yet their inherent atomic thickness fundamentally limits light-matter interactions…

With reduced degrees of freedom, structural defects are expected to play a greater role in two-dimensional materials in comparison to their bulk counterparts. In particular, mechanical strength, electronic properties, and chemical…

Materials Science · Physics 2016-04-05 Xiaolong Liu , Itamar Balla , Hadallia Bergeron , Mark C. Hersam

Two-Dimensional (2D) transition metal dichalcogenides (TMDs) have been the subject of extensive attention thanks to their unique properties and atomically thin structure. Because of its unprecedented room-temperature magnetic properties,…

Materials Science · Physics 2024-12-10 Elham Easy , Mengqi Fang , Mingxing Li , Eui-Hyeok Yang , Xian Zhang

Molybdenum disulfide (MoS2) of single and few-layer thickness was exfoliated on SiO2/Si substrate and characterized by Raman spectroscopy. The number of S-Mo-S layers of the samples was independently determined by contact-mode atomic-force…

Materials Science · Physics 2010-11-16 Changgu Lee , Hugen Yan , Louis E. Brus , Tony F. Heinz , James Hone , Sunmin Ryu

In the present study we employed density functional theory calculations to investigate the mechanical behavior, bonding nature and defect processes of the new ordered MAX phase Mo2ScAlC2. The mechanical stability of the compound is verified…

Materials Science · Physics 2017-02-13 M. A. Hadi , S. H. Naqib , S. -R. G. Christopoulos , A. Chroneos , A. K. M. A. Islam

Atomically thin materials, like semiconducting transition metal dichalcogenides (S-TMDs), are highly sensitive to the environment. This opens up an opportunity to externally control their properties by changing their surroundings. We…

Mesoscale and Nanoscale Physics · Physics 2019-10-23 M. Grzeszczyk , M. R. Molas , K. Nogajewski , M. Bartoš , A. Bogucki , C. Faugeras , P. Kossacki , A. Babiński , M. Potemski

Interface of transition metal dichalcogenide (TMDC) and high-k dielectric transition metal oxides (TMO) had triggerred umpteen discourses due to the indubitable impact of TMO in reducing the contact resistances and restraining the…

A detailed nanoscale structural characterization was performed on high-quality La0.66Sr0.33MnO3 (LSMO) thin films of different thicknesses and deposited by pulsed laser deposition onto buffered Si (100) substrates. A multilayered structure…

Materials Science · Physics 2020-09-16 Aneely Carrero , Augusto Roman , Myriam Aguirre , Laura B. Steren

Molybdenum disulfide (MoS$_2$) is a promising material for making two-dimensional crystals and flexible electronic and optoelectronic devices at the nanoscale. MoS$_2$ flakes can show high mobilities and have even been integrated in…

Materials Science · Physics 2015-06-15 Mohamed Boukhicha , Matteo Calandra , Marie-Aude Measson , Ophelie Lancry , Abhay Shukla

We study the effect of local strain in the electronic transport properties of vertical metal-atomically thin MoS2-metal structures. We use a conductive atomic force microscope tip to apply different load forces to monolayer and few-layer…

Mesoscale and Nanoscale Physics · Physics 2017-01-25 Jorge Quereda , Juan José Palacios , Nicolás Agräit , Andres Castellanos-Gomez , Gabino Rubio-Bollinger

We report a comparative study of the properties of very thin films of La0.67Ca0.33MnO3 grown epitaxially under strain on flat SrTiO3 (STO) and on 1 deg miscut STO. For the films on flat STO the transport properties show well-known behavior,…

Materials Science · Physics 2012-06-06 C. Beekman , J. Aarts

The coexistence of semiconducting (2H) and metallic (1T) phases of MoS$_{2}$ monolayers have further pushed their strong potential for applications in the next generation of electronic devices based on the two-dimensional lateral…

Computational Physics · Physics 2021-12-01 Mohammad Bahmani , Mahdi Ghorbani-Asl , Thomas Frauenheim