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We experimentally investigate charge transport through a single planar junction between a NiTe$_2$ Dirac semimetal and a normal gold lead. At millikelvin temperatures we observe non-Ohmic $dV/dI(V)$ behavior resembling Andreev reflection at…

Mesoscale and Nanoscale Physics · Physics 2022-12-16 V. D. Esin , O. O. Shvetsov , A. V. Timonina , N. N. Kolesnikov , E. V. Deviatov

The interfacial electronic properties of complex oxides are governed by a delicate balance between charge transfer, lattice distortions, and electronic correlations, posing a key challenge for controlled tunability in materials research.…

Materials Science · Physics 2025-11-05 Haidong Liang , Ganesh Ji Omar , Kun Han , Andrew A. Bettiol , Zhen Huang , A. Ariando

Heterostructures of graphene in proximity to magnetic insulators open the possibility to investigate exotic states emerging from the interplay of magnetism, strain and charge transfer between the layers. Recent reports on the growth of…

Strongly Correlated Electrons · Physics 2024-06-13 Aleksandar Razpopov , Roser Valentí

The two-dimensional electron liquid, at the (001) interface between band insulators {L}a{A}l{O}$_3$ and {S}r{T}i{O}$_3$, undergoes Lifshitz transition as the interface is doped with carriers. At a critical carrier density, two new orbitals…

Strongly Correlated Electrons · Physics 2016-10-11 S. Nandy , N. Mohanta , S. Acharya , A. Taraphder

We present a detailed numerical study of the electronic properties of single-layer graphene with resonant ("hydrogen") impurities and vacancies within a framework of noninteracting tight-binding model on a honeycomb lattice. The algorithms…

Mesoscale and Nanoscale Physics · Physics 2010-09-29 Shengjun Yuan , Hans De Raedt , Mikhail I. Katsnelson

Nickel-based superconductors provide a long-awaited experimental platform to explore possible cuprate-like superconductivity. Despite similar crystal structure and $d$ electron filling, these systems exhibit several differences. Nickelates…

This work deals with the intrinsic and extrinsic properties of the graphene layers inside the graphite structure, in particular the influence of defects and interfaces. We discuss the evidence for ballistic transport found in mesoscopic…

Materials Science · Physics 2011-10-13 J. Barzola-Quiquia , A. Ballestar , S. Dusari , P. Esquinazi

The great majority of electronic and optoelectronic devices depends on interfaces between n-type and p-type semiconductors. Finding such matching donor-acceptor systems in molecular crystals remains a challenging endeavor. Structurally…

Interfacial superconductivity is observed in a variety of heterostructures composed of different materials including superconducting and nonsuperconducting (at appropriate doping and temperatures) cuprates and iron-based pnictides. The…

Superconductivity · Physics 2015-06-23 Andreas Moor , Anatoly F. Volkov , Konstantin B. Efetov

We have investigated the charge dynamics and the nature of many-body interactions in La- and Pr- doped CaFe2As2. From the infrared part of the optical conductivity, we discover that the scattering rate of mobile carriers above 200 K…

We examine an effect of acoustic phonon scattering on an electric conductivity of single-component molecular conductor [Pd(dddt)$_2$] (dddt = 5,6-dihydro-1,4-dithiin-2,3-dithiolate) with a half-filled band by applying the previous…

Materials Science · Physics 2020-09-30 Yoshikazu Suzumura , Reizo Kato , Masao Ogata

We investigate the dynamics of correlated charge carriers in the vicinity of the Mott metal-to-insulator transition in various of the title quasi-two-dimensional organic charge-transfer salts by means of fluctuation (noise) spectroscopy.…

Strongly Correlated Electrons · Physics 2015-03-19 Jens Brandenburg , Jens Müller , Dieter Schweitzer , John A. Schlueter

The interface superconductivity in LaAlO$_{3}$-SrTiO$_{3}$ heterostructures reveals a non-monotonic behavior of the critical temperature as a function of the two-dimensional density of charge carriers. We develop a theoretical description…

Superconductivity · Physics 2014-07-22 S. N. Klimin , J. Tempere , J. T. Devreese , D. van der Marel

We report the fabrication of back-gated field-effect transistors (FETs) using ultra-thin, mechanically exfoliated MoSe2 flakes. The MoSe2 FETs are n-type and possess a high gate modulation, with On/Off ratios larger than 106. The devices…

Mesoscale and Nanoscale Physics · Physics 2013-01-04 S. Larentis , B. Fallahazad , E. Tutuc

In this work, we describe the charge transport in two-dimensional (2D) Schottky barrier field-effect transistors (SB-FETs) based on the carrier injection at the Schottky contacts. We first develop a numerical model for thermionic and…

Applied Physics · Physics 2023-07-12 Ashwin Tunga , Zijing Zhao , Ankit Shukla , Wenjuan Zhu , Shaloo Rakheja

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

Two dimensional SrTiO3-based interfaces stand out among non-centrosymmetric superconductors due to their intricate interplay of gate tunable Rashba spin-orbit coupling and multi-orbital electronic occupations, whose combination…

A new method which allows one to study multiple coherent reflection/transmissions by partially transparent interfaces, (e.g., in multi-layer mesoscopic structures or grain boundaries in high-Tc's), in the framework of the quasiclassical…

Superconductivity · Physics 2009-10-31 A. Shelankov , M. Ozana

Ultrathin two-dimensional (2D) electronic systems at the interfaces of layered materials are highly desirable platforms for exploring of novel quantum phenomena and developing advanced device applications. Here, we investigate ultrathin…

Mesoscale and Nanoscale Physics · Physics 2025-03-31 Zengxing Lu , Jiatai Feng , Xuan Zheng , You-guo Shi , Run-Wei Li , Carmine Autieri , Mario Cuoco , Milan Radovic , Zhiming Wang

Black phosphorus (BP) has recently emerged as a promising narrow band gap layered semiconductor with optoelectronic properties that bridge the gap between semi-metallic graphene and wide band gap transition metal dichalcogenides such as…