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We report the first formation of the metallic $p$-$n$ junctions, the ferroelectric (Ba,Sr)TiO$_3$ (BST) switched optimally electron-doped ($n$-type) metallic T'-phase superconductor, (La,Ce)$_2$CuO$_4$ (LCCO), and hole-doped ($p$-type)…

Materials Science · Physics 2007-05-23 J. Yuan , H. Wu , L. Zhao , K. Jin , L. X. Cao , B. Y. Zhu , S. J. Zhu , J. P. Zhong , J. Miao , H. Yang , B. Xu , X. Y. Qi , Y. Han , X. G. Qiu , X. F. Duan , B. R. Zhao

After the electromagnetic generator, searching for novel electric generators without strong magnetic field is highly demanded. The generator without strong magnetic field calls for a physical picture distinct from the traditional…

Applied Physics · Physics 2019-12-04 Yanghua Lu , Sirui Feng , Zhenzhen Hao , Runjiang Shen , Shisheng Lin

Transition voltage spectroscopy (TVS) has recently been introduced as a spectroscopic tool for molecular junctions where it offers the possibility to probe molecular level energies at relatively low bias voltages. In this work we perform…

Mesoscale and Nanoscale Physics · Physics 2015-05-19 Jingzhe Chen , Troels Markussen , Kristian S. Thygesen

Using a pair of p- and n-type semiconductors separated by a nanoscale vacuum gap, we introduce an optoelectronics element prototype, "photonic p-n junction", as an analogue of the electronic p-n junction, which is demonstrated to serve as…

Optics · Physics 2022-10-05 Deyu Xu , Junming Zhao , Linhua Liu

We propose a possible route to achieve high thermoelectric efficiency in molecular junctions by combining a local chemical tuning of the molecular electronic states with the use of semiconducting electrodes. The former allows to control the…

Materials Science · Physics 2009-08-05 D. Nozaki , H. Sevinçli , W. Li , R. Gutierrez , G. Cuniberti

We study theoretically a junction consisting of a normal metal, PT-symmetric non-Hermitian superconductor, and an insulating thin layer between them (N-I-PTS junction). We calculate current-voltage characteristics for this junction using…

Mesoscale and Nanoscale Physics · Physics 2023-09-15 Viktoriia Kornich

It was recently suggested that molecular junctions would be excellent elements for efficient and high-power thermoelectric energy conversion devices. However, experimental measurements of thermoelectric conversion in molecular junctions…

Mesoscale and Nanoscale Physics · Physics 2015-06-09 Elinor Zerah-Harush , Yonatan Dubi

We use simultaneous electronic transport and optical characterization measurements to reveal new information about electronic and optical processes in nanoscale junctions fabricated by electromigration. Comparing electronic tunneling and…

Mesoscale and Nanoscale Physics · Physics 2015-05-28 Douglas Natelson , Daniel R. Ward , Falco Hüser , Fabian Pauly , Juan Carlos Cuevas , David A. Corley , James M. Tour

We demonstrate the reversible in situ photoreduction of molecular junctions of phosphomolybdate [PMo12O40]3- monolayer self-assembled on flat gold electrodes, connected by the tip of a conductive atomic force microscope. The conductance of…

We have investigated metallic break junctions of the heavy-fermion compound UPd2Al3 at low temperatures between 0.1K and 9K and in magnetic fields up to 8T. Both the current-voltage I(V) characteristics and the dV/dI (V) spectra clearly…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Yu. G. Naidyuk , K. Gloos , I. K. Yanson , N. K. Sato

The current-voltage p-n junction characteristics were mainly analyzed until now at low injection levels and high level injection separately. This work unifies the low injection, medium injection, high injection levels and the ohmic region…

Materials Science · Physics 2009-07-12 Miron J. Cristea

The dynamical characteristics of a single frequency low pressure capacitively coupled plasma (CCP) device under varying applied RF voltages and driving frequencies are studied using particle-in-cell/Monte Carlo collision simulations. An…

Plasma Physics · Physics 2018-08-29 Sarveshwar Sharma , Abhijit Sen , N. Sirse , M. M. Turner , A. R. Ellingboe

Plasmonic modes offer the potential to achieve PetaVolts per meter fields, that would transform the current paradigm in collider development in addition to non-collider searches in fundamental physics. PetaVolts per meter plasmonics relies…

We present a detailed study of the non-linear thermoelectric properties of a molecular junction, represented by a dissipative Anderson-Holstein model. A single orbital level with strong Coulomb interaction is coupled to a localized…

Mesoscale and Nanoscale Physics · Physics 2013-01-10 M. Leijnse , M. R. Wegewijs , K. Flensberg

The thermoelectric voltage developed across an atomic metal junction (i.e., a nanostructure in which one or a few atoms connect two metal electrodes) in response to a temperature difference between the electrodes, results from the quantum…

Understanding and controlling heat transport in molecular junctions would provide new routes to design nanoscale coupled electronic and phononic devices. Using first principles full quantum calculations, we tune thermal conductance of a…

Mesoscale and Nanoscale Physics · Physics 2015-11-20 Qian Li , Ivan Duchemin , Shiyun Xiong , Gemma C. Solomon , Davide Donadio

The valence band electronic structure of Pr$_{0.5}$Sr$_{0.5}$MnO$_3$ has been investigated across its paramagnetic metallic (PMM) - ferromagnetic metallic (FMM) - antiferromagnetic insulator (AFMI) transition. Using surface sensitive high…

Materials Science · Physics 2011-04-19 P. Pal , M. K. Dalai , I. Ulfat

The proposed protocol is an attempt to meet the experimentalists' legitimate desire of reliably and easily extracting microscopic parameters from current-voltage measurements on molecular junctions. It applies to junctions wherein charge…

Mesoscale and Nanoscale Physics · Physics 2024-02-27 Ioan Baldea

Non-magnetic p-n junctions have been fundamental components in the silicon era, serving as the backbone for nearly all Si-based semiconductor devices, including transistors. To tackle challenges such as scaling limitations, excessive…

We propose a junction of metal and rare-earth compound semiconductor as the basis for a possible efficient low-temperature thermoelectric device. If an overlayer of rare earth atoms differing from the bulk is placed at the interface, very…

Strongly Correlated Electrons · Physics 2009-10-31 Massimo Rontani , L. J. Sham