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Interfaces between transition-metal oxides are able to host two-dimensional electron gases (2DEGs) and exhibit exotic quantum phenomena. Here we report the observation of superconductivity below 230 mK for the heterostructure composed of…

Superconductivity · Physics 2022-12-27 Haoran Wei , Shengru Chen , Yuting Zou , Yuxin Wang , Meng Yang , Qinghua Zhang , Lin Gu , Kun Jiang , Er-Jia Guo , Zhi Gang Cheng

Biphasic interfaces are complex but fascinating regimes that display a number of properties distinct from those of the bulk. The CO$_2$-H$_2$O interface, in particular, has been the subject of a number of studies on account of its…

Materials Science · Physics 2025-02-13 Samuel G. H. Brookes , Venkat Kapil , Christoph Schran , Angelos Michaelides

Metal contacts are a key limiter to the electronic performance of two-dimensional (2D) semiconductor devices. Here we present a comprehensive study of contact interfaces between seven metals (Y, Sc, Ag, Al, Ti, Au, Ni, with work functions…

Two-dimensional transition metal dichalcogenides (TMDs) are highly appealing for gas sensors, lab-on-a-chip devices and bio-sensing applications because of their strong light-matter interaction and high surface-to-volume ratio. The ability…

Electronic and dielectric properties of vapor-phase grown MoS_{2} have been investigated in metal/MoS_{2}/silicon capacitor structures by capacitance-voltage and conductancevoltage techniques. Analytical methods confirm the MoS_{2} layered…

Materials Science · Physics 2019-07-19 M. Belete , S. Kataria , U. Koch , M. Kruth , C. Engelhard , J. Mayer , O. Engström , M. C. Lemme

MoS2 is one of the important members of transition metal dichalogenides which is emerging as a potential 2D atomically thin layered material for low power electronic and opto-electronic applications. However, for MoS2 a critical fundamental…

Mesoscale and Nanoscale Physics · Physics 2015-06-19 Anand P. S. Gaur , Satyaprakash Sahoo , Majid Ahmadi , Saroj P Dash , Maxime J-F Guinel , Ram S. Katiyar

The atomic-scale synthesis of artificial oxide heterostructures offers new opportunities to create novel states that do not occur in nature. The main challenge related to synthesizing these structures is obtaining atomically sharp…

Low-dimensional electron systems, as realized naturally in graphene or created artificially at the interfaces of heterostructures, exhibit a variety of fascinating quantum phenomena with great prospects for future applications. Once…

Strongly Correlated Electrons · Physics 2016-08-03 T. Ritschel , J. Trinckauf , K. Koepernik , B. Büchner , M. v. Zimmermann , H. Berger , Y. I. Joe , P. Abbamonte , J. Geck

Transparent conducting oxides (TCOs) are essential components of optoelectronic devices and various materials have been explored for highly efficient TCOs having a combination of high transmittance and low sheet resistance. Here, we focus…

Materials Science · Physics 2023-08-08 Reiji Okada , Hiroto Isomura , Yoshiki J. Sato , Ryuji Okazaki , Masayuki Inoue , Shinya Yoshioka

At interfaces between complex oxides it is possible to generate electronic systems with unusual electronic properties, which are not present in the isolated oxides. One important example is the appearance of superconductivity at the…

Superconductivity · Physics 2016-07-13 D. Di Castro , C. Cantoni , F. Ridolfi , C. Aruta , A. Tebano , N. Yang , G. Balestrino

The photoconversion of CO$_2$ to hydrocarbons is a sustainable route to its transformation into value-added compounds and, thereby, crucial to mitigating the energy and climate crises. CuPt nanoparticles on TiO$_2$ surfaces have been…

Two-dimensional (2D) layered dielectrics offers a compelling route towards the design of next-generation ultimately compact nanoelectronics. Motivated by recent high-throughput computational prediction of LaO$X$ ($X$ = Br, Cl) as an…

Materials Science · Physics 2023-04-12 Zhuoling Jiang , Tong Su , Cherq Chua , L. K. Ang , Chun Zhang , Liemao Cao , Yee Sin Ang

Copper nanowires are widely used as on-chip interconnects due to superior conductivity. However, with aggressive Cu interconnect scaling, the diffusive surface scattering of electrons drastically increases the electrical resistivity. In…

We show that oxygen vacancies at titanate interfaces induce a complex multiorbital reconstruction which involves a lowering of the local symmetry and an inversion of t2g and eg orbitals resulting in the occupation of the eg orbitals of Ti…

Strongly Correlated Electrons · Physics 2012-08-27 N. Pavlenko , T. Kopp , E. Y. Tsymbal , J. Mannhart , G. A. Sawatzky

Stacking atomic monolayers of semiconducting transition metal dichalcogenides (TMDs) has emerged as an effective way to engineer their properties. In principle, the staggered band alignment of TMD heterostructures should result in the…

Mesoscale and Nanoscale Physics · Physics 2017-09-14 M. Baranowski , A. Surrente , L. Klopotowski , J. M. Urban , N. Zhang , D. K. Maude , K. Wiwatowski , S. Mackowski , Y. C. Kung , D. Dumcenco , A. Kis , P. Plochocka

The interface chemistry of silicon nanocrystals (NCs) embedded in amorphous oxide matrix is studied through molecular dynamics simulations with the chemical environment described by the reactive force field model. Our results indicate that…

Materials Science · Physics 2008-04-16 D. E. Yılmaz , C. Bulutay , T. Çağın

When doped into a certain range of charge carrier concentrations, MoS2 departs from its pristine semiconducting character to become a strongly correlated material characterized by exotic phenomena such as charge density waves or…

Two-dimensional (2D) materials offer a valuable platform for manipulating and studying chemical reactions at atomic level, owing to the ease of controlling their microscopic structure at the nanometer scale. While extensive research has…

We report that annealing in low-oxygen-partial-pressure (low-p$_{\rm O2}$) ambient is effective in reducing the interface state density (D$_{\rm IT}$) at a SiC (0001)/SiO$_{\rm 2}$ interface near the conduction band edge (E$_{\rm C}$) of…

Materials Science · Physics 2019-02-19 Takuma Kobayashi , Keita Tachiki , Koji Ito , Tsunenobu Kimoto

Stacked van der Waals heterostructures based on transition metal dichalcogenides (TMDs) exhibit a rich variety of exotic interfacial phenomena. Substituting one component with an organic semiconductor (OSC) enables the design of hybrid…