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One of the major roadblocks for the establishment of 2D semiconductor technology for CMOS integrated circuits is lack of industry scalable doping techniques that lead to 2D FETs with comparable n-type and p-type behavior. Here we…

Applied Physics · Physics 2019-01-09 Ansh , J Kumar , R K Mishra , S Raghavan , Mayank Shrivastava

Contact resistance of semiconducting transition metal dichalcogenides has been shown to decrease in lateral heterojunctions formed with their metallic phases but its origins remain elusive. Here we combine first principles and quantum…

Mesoscale and Nanoscale Physics · Physics 2020-03-04 Adam Pfeifle , Marcelo A. Kuroda

Topological superconductors (TSCs) are unconventional superconductors with bulk superconducting gap and in-gap Majorana states on the boundary that may be used as topological qubits for quantum computation. Despite their importance in both…

Two-dimensional layered materials, such as transition metal dichalcogenides (TMDCs), are promising materials for future electronics owing to their unique electronic properties. With the presence of a band gap, atomically thin gate defined…

Mesoscale and Nanoscale Physics · Physics 2015-10-28 Xiang-Xiang Song , Di Liu , Vahid Mosallanejad , Jie You , Tian-Yi Han , Dian-Teng Chen , Hai-Ou Li , Gang Cao , Ming Xiao , Guang-Can Guo , Guo-Ping Guo

Atomically thin, single-crystalline transition metal dichalcogenides (TMDCs) grown via chemical vapor deposition (CVD) on sapphire substrates exhibit exceptional mechanical and electrical properties, positioning them as excellent channel…

Understanding quasiparticle band structures of transition metal dichalcogenides (TMDs) is critical for technological advances of these materials for atomic layer electronics and photonics. Although theoretical calculations to date have…

Mesoscale and Nanoscale Physics · Physics 2015-10-30 Chendong Zhang , Yuxuan Chen , Amber Johnson , Ming-Yang Li , Lain-Jong Li , Patrick C. Mende , Randall M. Feenstra , Chih-Kang Shih

Understanding the interfacial electrical properties between metallic electrodes and low dimensional semiconductors is essential for both fundamental science and practical applications. Here we report the observation of thickness reduction…

Mesoscale and Nanoscale Physics · Physics 2015-02-17 Song-Lin Li , K. Komatsu , Shu Nakaharai , Yen-Fu Lin , M. Yamamoto , X. F. Duan , K. Tsukagoshi

The manipulation of two-dimensional materials via their dielectric environment offers novel opportunities to control electronic as well as optical properties and allows to imprint nanostructures in a non-invasive way. Here we asses the…

Strongly Correlated Electrons · Physics 2020-10-02 Christina Steinke , Tim O. Wehling , Malte Rösner

Atomically thin transition metal dichalcogenides (TMDCs) such as MoS$_2$ and WSe$_2$ are emerging as a new platform for exploring many-body effects. Coulomb interactions are markedly enhanced in these materials because of the reduced…

Mesoscale and Nanoscale Physics · Physics 2017-10-03 Shuigang Xu , Liheng An , Jiangxiazi Lin , Zefei Wu , Tianyi Han , Gen Long , Yuheng He , Zhi-qiang Bao , Fan Zhang , Ning Wang

Recent experiment has uncovered semimetal bismuth (Bi) as an excellent electrical contact to monolayer MoS$_2$ with ultralow contact resistance. The contact physics of the broader semimetal/monolayer-semiconductor family beyond Bi/MoS$_2$,…

Materials Science · Physics 2023-04-19 Tong Su , Yueyan Li , Qianqian Wang , Weiwei Zhao , Liemao Cao , Yee Sin Ang

The development of advanced electronic devices is contingent upon sustainable material development and pioneering research breakthroughs. Traditional semiconductor-based electronic technology faces constraints in material thickness scaling…

Reducing the contact resistance of field-effect transistors based on two-dimensional materials is one of the key improvements required to enable the integration of such transistors in an advanced semiconductor manufacturing process.…

Mesoscale and Nanoscale Physics · Physics 2024-12-31 Giuseppe Lovarelli , Fabrizio Mazziotti , Demetrio Logoteta , Giuseppe Iannaccone

Semiconducting transition metal dichalcogenides (TMDs) are promising for flexible high-specific-power photovoltaics due to their ultrahigh optical absorption coefficients, desirable band gaps and self-passivated surfaces. However,…

Using first-principles atomistic simulations, we study the response of atomically-thin layers of transition metal dichalcogenides (TMDs) - a new class of two-dimensional inorganic materials with unique electronic properties - to electron…

Superconductivity in few-layer semiconducting transition metal dichalcogenides (TMDs) can be induced by field-effect doping through ionic-liquid gating. While several experimental observations have been collected over the years, a…

Superconductivity · Physics 2024-09-24 Thibault Sohier , Marco Gibertini , Ivar Martin , Alberto F. Morpurgo

Manipulating materials properties far from equilibrium recently garnered significant attention, with experimental emphasis on transient melting, enhancement, or induction of electronic order. A more tantalizing aspect of the matter-light…

Materials Science · Physics 2016-10-28 Martin Claassen , Chunjing Jia , Brian Moritz , Thomas P. Devereaux

Two-dimensional transition metal dichalcogenides (TMDs) exhibit an extensive variety of novel electronic properties, such as charge density wave quantum spin Hall phenomena, superconductivity, and Dirac and Weyl semi-metallic properties.…

Strongly Correlated Electrons · Physics 2023-09-15 S. Koley

High quality electrical contact to semiconducting transition metal dichalcogenides (TMDCs) such as $MoS_2$ is key to unlocking their unique electronic and optoelectronic properties for fundamental research and device applications. Despite…

Two-dimensional (2D) semiconductors, such as the transition metal dichalcogenides, have demonstrated tremendous promise for the development of highly tunable quantum devices. Realizing this potential requires low-resistance electrical…

Atomically thin transition metal dichalcogenides (TMDs) have distinct opto-electronic properties including enhanced luminescence and high on-off current ratios, which can be further modulated by making more complex TMD heterostructures.…

Mesoscale and Nanoscale Physics · Physics 2020-01-28 Akshay Singh , Hae Yeon Lee , Silvija Gradecak