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Negative differential resistance (NDR) is tuned at junctions of electronically different dimer and trimer of Rose Bengal on an atomic flat gold (111) surface. Isolated molecule did not show any NDR. But it was induced to show double NDR…

Mesoscale and Nanoscale Physics · Physics 2015-06-25 Anirban Bandyopadhyay , Y. Wakayama

We report on the fabrication and measurements of platinum-self-aligned nanogap devices containing cubed iron (core)/iron oxide (shell) nanoparticles (NPs) with two average different sizes (13 and 17 nm). The nanoparticles are deposited by…

We report on the fabrication and electrical characterization of field-effect devices based on wire-shaped InP crystals grown from Au catalyst particles by a vapor-liquid-solid process. Our InP wires are n-type doped with diameters in the…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 S. De Franceschi , J. A. van Dam , E. P. A. M. Bakkers , L. F. Feiner , L. Gurevich , L. P. Kouwenhoven

Dipolar couplings are an important source of structure as they provide site specific dipolar splittings for aligned samples and hence are extensively used for the study of membrane proteins in lipid bilayers, liquid crystals and single…

Biological Physics · Physics 2010-10-05 S. Jayanthi , K. V. Ramanathan

Monolayer transition metal dichalcogenides (TMDs) show an optimal surface-to-volume ratio and are thus promising candidates for novel molecule sensor devices. It was recently predicted that a certain class of molecules exhibiting a large…

Spin crossover (SCO) molecules are promising bi-stable magnetic switches with applications in molecular spintronics. However, little is known about the switching effects of a single SCO molecule when it is confined between two metal…

Mesoscale and Nanoscale Physics · Physics 2020-06-12 Alex Gee , Ayoub H. Jaafar , Barbora Brachňaková , Jamie Massey , Christopher H. Marrows , Ivan Šalitroš , N. T. Kemp

Microwave band on-chip microcoils are developed for the application to single electron spin resonance measurement with a single quantum dot. Basic properties such as characteristic impedance and electromagnetic field distribution are…

Mesoscale and Nanoscale Physics · Physics 2007-10-24 Toshiaki Obata , Michel Pioro-Ladriere , Toshihiro Kubo , Katsuharu Yoshida , Yasuhiro Tokura , Seigo Tarucha

Scanning tunneling spectroscopy measures how a single electron with definite energy propagates between a sample surface and the tip of a scanning tunneling microscope. In the simplest description, the differential conductance measured is…

Mesoscale and Nanoscale Physics · Physics 2019-05-07 Mikko M. Ervasti , Fabian Schulz , Peter Liljeroth , Ari Harju

We present a comprehensive electrical characterization of an InAs/InP nanowire heterostructure, comprising two InP barriers forming a quantum dot (QD), two adjacent lead segments (LSs) and two metallic contacts, and demonstrate how to…

We report on tuning the carrier capture events at a single dangling bond (DB) midgap state by varying the substrate temperature, doping type, and doping concentration. All-electronic time-resolved scanning tunneling microscopy (TR-STM) is…

Mesoscale and Nanoscale Physics · Physics 2017-11-03 Mohammad Rashidi , Erika Lloyd , Taleana R. Huff , Roshan Achal , Marco Taucer , Jeremiah J. Croshaw , Robert A. Wolkow

We study single electron transport across a single Bi dopant in a Silicon Nanotransistor to assess how the strong hyperfine coupling with the Bi nuclear spin $I=9/2$ affects the transport characteristics of the device. In the sequential…

Mesoscale and Nanoscale Physics · Physics 2013-08-19 F. Delgado , R. Aguado , J. Fernández-Rossier

A Mn-porphyrin was contacted on Au(111) in a low-temperature scanning tunneling microscope (STM). Differential conductance spectra show a zero-bias resonance that is due to an underscreened Kondo effect according to many-body calculations.…

Linear transport through a single-walled carbon nanotube ring (CNR), pierced by a magnetic field and capacitively coupled to a gate voltage source, is investigated starting from a model of interacting $p_z$-electrons. The dc-conductance,…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 M. Eroms , L. Mayrhofer , M. Grifoni

A room temperature single-electron transistor based on the single cluster molecule has been demonstrated for the first time. Scanning tunneling microscope tip was used to study the transport via single carboran cluster molecule…

We report on inelastic electron tunneling spectroscopy measurements carried out on single molecules incorporated into a mechanically controllable break-junction of Au and Pt electrodes at low temperature. Here we establish a correlation…

Mesoscale and Nanoscale Physics · Physics 2010-11-16 Youngsang Kim , Hyunwook Song , Florian Strigl , Hans-Fridtjof Pernau , Takhee Lee , Elke Scheer

Nuclear magnetic resonance (NMR) has enormous applications. Two-dimensional NMR is an essential technique to characterize correlations between nuclei and, hence, molecule structures. Towards the ultimate goal of single-molecule NMR,…

Quantum Physics · Physics 2016-11-30 Wen-Long Ma , Ren-Bao Liu

A single-hole transistor is patterned in a p-type, C-doped GaAs/AlGaAs heterostructure by AFM oxidation lithography. Clear Coulomb blockade resonances have been observed at T=300 mK. A charging energy of ~ 1.5 meV is extracted from Coulomb…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Boris Grbic , Renaud Leturcq , Klaus Ensslin , Dirk Reuter , Andreas D. Wieck

Hybrid normal metal - insulator - superconductor microstructures suitable for studying an interference of electrons were fabricated. The structures consist of a superconducting loop connected to a normal metal electrode through a tunnel…

Superconductivity · Physics 2009-04-07 K. Yu. Arutyunov , T. T. Hongisto

We carry out experiments on single-molecule junctions at low temperatures, using the mechanically controlled break junction technique. Analyzing the results received with more than ten different molecules the nature of the first peak in the…

Mesoscale and Nanoscale Physics · Physics 2012-03-21 Daniel Secker , Stefan Wagner , Stefan Ballmann , Rainer Härtle , Michael Thoss , Heiko B. Weber

One of the ultimate goals of molecular electronics is to create technologies that will complement - and eventually supersede - Si-based microelectronics technologies. To reach this goal, electronic properties that mimic at least some of the…

Mesoscale and Nanoscale Physics · Physics 2015-06-26 Bingqian Xu , Yonatan Dubi