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Related papers: Magnetic molecule tunnel heterojunctions

200 papers

Characterization of the structural and electron transport properties of single chiral molecules provides critical insights into the interplay between their electronic structure and electrochemical environments, providing broader…

Chemical Physics · Physics 2024-09-26 Yueqing Shi , Liya Bi , Zihao Wang , Kangkai Liang , Ji-Kun Li , Xiao-Ye Wang , Wan-Lu Li , Shaowei Li

We report an insulator-metal-insulator transition in films of five metal phthalocyanines (MPc) doped with alkali atoms. Electrical conduction measurements demonstrate that increasing the alkali concentration results in the formation of a…

Other Condensed Matter · Physics 2007-05-23 M. F. Craciun , S. Rogge , M. J. L. den Boer , S. Margadonna , K. Prassides , Y. Iwasa , A. F. Morpurgo

The magnetic tetrapyrrole molecules (such as porphyrins and phthalocyanines) with an active transition metal atom in their centre are currently intensively studied as prosperous potential elements of devices for high-density information…

Materials Science · Physics 2022-10-06 Aleksei Koshevarnikov , Tomi Ketolainen , Jacek A. Majewski

Thickness uniformity is regarded as an important parameter in designing thin film devices. However, some applications based on films with non-uniform thickness have recently emerged, such as gas sensors and optimized materials based on the…

The coexistence and competition of superconductivity and magnetism can lead to a variety of rich physics and technological applications. Recent discovery of atomic-layer superconductors and self-assembly of magnetic molecules on solid…

The Heusler alloy is used as an electrode of magnetic tunneling junctions. The junctions are deposited by magnetron dc sputtering using shadow mask techniques with AlO_{x} as a barrier and cobalt as counter electrode. Measurements of the…

Other Condensed Matter · Physics 2009-11-10 A. Conca , S. Falk , G. Jakob , M. Jourdan , H. Adrian

Recent years have shown steady progress in research towards molecular electronics [1,2], where molecules have been investigated as switches [3-5], diodes [6], and electronic mixers [7]. In much of the previous work a Scanning Tunnelling…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 R. H. M. Smit , Y. Noat , C. Untiedt , N. D. Lang , M. van Hemert , J. M. van Ruitenbeek

We report on systematic ab-initio investigations of Co and Cr interlayers embedded in Fe(001)/MgO/Fe(001) magnetic tunnel junctions, focusing on the changes of the electronic structure and the transport properties with interlayer thickness.…

Materials Science · Physics 2013-05-29 P. Bose , P. Zahn , J. Henk , I. Mertig

Quantum confinement of the perpendicular motion of electrons in single-crystalline metallic superconducting nanofilms splits the conduction band into a series of single-electron subbands. A distinctive feature of such a nanoscale multi-band…

Superconductivity · Physics 2015-05-28 Yajiang Chen , A. A. Shanenko , A. Perali , F. M. Peeters

We calculate non-perturbatively the inelastic effects on the conductance through a conjugated molecular wire-metal heterojunction, including realistic electron-phonon coupling. We show that at sub-band-gap energies the current is dominated…

Materials Science · Physics 2009-10-31 H. Ness , A. J. Fisher

The electrical and magnetic properties of p-type cubic (Ga,Mn)N thin films grown by plasma-assisted molecular beam epitaxy are reported. Hole concentrations in excess of 1018 cm-3 at room temperature are observed. Activated behaviour is…

Materials Science · Physics 2014-01-03 KW Edmonds , SV Novikov , M Sawicki , RP Campion , C. R. Staddon , AD Giddings , LX Zhao , KY Wang , T Dietl , CT Foxon , BL Gallagher

A key to building functional devices on the basis of single molecule magnets in the framework of molecular electronics is the ability to deposit and study these molecules on a surface, because the structural, electronic and magnetic…

Mesoscale and Nanoscale Physics · Physics 2016-01-26 Judith Donner , Jan-Philipp Broschinski , Bastian Feldscher , Anja Stammler , Hartmut Bögge , Thorsten Glaser , Daniel Wegner

In this paper, we have done a comparative study of electronic and magnetic properties of iron phthalocyanine (FePc) and cobalt phthalocyanine (CoPc) molecules physisorbed on monolayer of MoS$_2$ and graphene by using density functional…

Materials Science · Physics 2018-09-05 Soumyajyoti Haldar , Sumanta Bhandary , Hakkim Vovusha , Biplab Sanyal

The simplicity of single-molecule junctions based on direct bonding of a small molecule between two metallic electrodes make them an ideal system for the study of fundamental questions related to molecular electronics. Here we study the…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 O. Tal , M. Kiguchi , W. H. A. Thijssen , D. Djukic , C. Untiedt , R. H. M. Smit , J. M. van Ruitenbeek

We investigate evolution of the magnetic penetration depth and superconducting energy gap in epitaxial NbN films using a low frequency mutual inductance technique and tunneling spectroscopy using a low temperature scanning tunneling…

In the field of molecular electronics, particularly in quantum transport studies, the orientation of molecules plays a crucial role. This orientation, with respect to the electrodes, can be defined through the cavity of ring-shaped…

Materials Science · Physics 2023-02-17 A. Martinez-Garcia , T. de Ara , L. Pastor-Amat , C. Untiedt , E. B. Lombardi , W. Dednam , C. Sabater

In this Chapter we review our latest results on magnetic (AC susceptibility) and transport (resistivity) properties of Pr1.85Ce0.15CuO4 (PCCO) and Sm1.85Ce0.15CuO4 (SCCO) thin films grown by pulsed laser deposition technique. Three main…

Superconductivity · Physics 2008-02-18 S. Sergeenkov , A. J. C. Lanfredi , F. M. Araujo-Moreira

The equiatomic quaternary Heusler alloy CoFeCrAl is a candidate material for spin-gapless semiconductors (SGSs). However, to date, there have been no experimental attempts at fabricating a junction device. This paper reports a fully…

Mixed-dimensional magnetic heterostructures are intriguing, newly available platforms to explore quantum physics and its applications. Using state-of-the-art many-body perturbation theory, we predict the energy level alignment for a…

Materials Science · Physics 2020-10-28 Runrun Xu , Fengyuan Xuan , Su Ying Quek

Engineering heterostructures with various types of quantum materials can provide an intriguing playground for studying exotic physics induced by the proximity effect. Here, we report the successful synthesis of iron-based superconductor…