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The rapid growth of electronic waste must be curtailed to prevent accumulation of environmentally and biologically toxic materials, which are essential to traditional electronics. The recent proliferation of transient electronics has…

Half-Heusler compounds have emerged as promising thermoelectric materials that offer huge compositional space to tune their thermoelectric performance. A class of stable half Heusler compounds formed from elements of three specific groups…

Materials Science · Physics 2020-11-17 Parul R. Raghuvanshi , Suman Mondal , Amrita Bhattacharya

I review progress in measurements of the dynamic spin susceptibility in the normal state which yield a new phase diagram and discuss microscopic calculations which yield qualitative, and in many cases, quantitative agreement with the…

Condensed Matter · Physics 2009-10-30 David Pines

Electronic transport in highly doped but still insulating silicon at low temperatures is dominated by hopping between localized states; it serves as a model system of a disordered solid for which the electronic interaction can be…

Strongly Correlated Electrons · Physics 2007-05-23 Marco Hering , Marc Scheffler , Martin Dressel , Hilbert v. Lohneysen

Organic compounds are always promising candidates of superconductors with high transition temperatures. We examine this proposal by choosing 2,2$'$-bipyridine solely composed by C, H, and N atoms. The presence of Meissner effect with a…

Superconductivity · Physics 2018-01-25 Kai Zhang , Ren-Shu Wang , An-Jun Qin , Xiao-Jia Chen

In the last six years (2015-2021), many superconducting hydrides with critical temperatures $\textit{T}$$_C$ of up to 253 K, a record for today, have been discovered. Now, a special field of hydride superconductivity at ultrahigh pressures…

Superconductivity · Physics 2023-07-26 Dmitrii Semenok

Doping is an effective way to modify the electronic property of two-dimensional (2D) materials and endow them with new functionalities. However, wide-range control of the substitutional doping concentration with large scale uniformity…

In two-dimensional multivalley semiconductors, at low doping, even a moderate electron-electron interaction enhances the response to any perturbation inducing a valley polarization. If the valley polarization is due to the electron-phonon…

Superconductivity · Physics 2015-03-05 Matteo Calandra , Paolo Zoccante , Francesco Mauri

Control of chain length and morphology in combination with single-molecule spectroscopy techniques provide a comprehensive photophysical picture of excited-state losses in the prototypical conjugated polymer poly(3-hexylthiophene) (P3HT). A…

Chemical Physics · Physics 2014-09-18 Florian Steiner , Jan Vogelsang , John M. Lupton

We perform a phenomenological analysis of the problem of the electronic doping of a graphene sheet by deposited transition metal atoms, which aggregate in clusters. The sample is placed in a capacitor device such that the electronic doping…

Strongly Correlated Electrons · Physics 2015-03-19 Jaime E. Santos , Nuno M. R. Peres , Joao M. B. Lopes dos Santos , Antonio H. Castro Neto

Recent studies demonstrate that novel 2D triphosphides semiconductors possess high carrier mobility and promising thermoelectric performance, while the carrier transport behaviors in 2D semimetal triphosphides have never been elucidated…

Materials Science · Physics 2023-08-09 Yongchao Rao , C. Y. Zhao , Lei Shen , Shenghong Ju

We investigate the magnetic and superconducting properties in electron-doped Li$_x$HfNCl. HfNCl is a band insulator that undergoes an insulator to superconductor transition upon doping at $x\approx0.13$. The persistence of the insulating…

Superconductivity · Physics 2017-08-02 Betül Pamuk , Francesco Mauri , Matteo Calandra

Using first principle calculations, we examine the sequence of phases in electron doped dichalcogenides, such as recently realized in field-gated MoS$_2$. Upon increasing the electron doping level, we observe a succession of semiconducting,…

Materials Science · Physics 2014-12-10 M. Rösner , S. Haas , T. O. Wehling

A recent experiment has reported a nitrogen-doped lutetium hydride acheving a remarkable Tc of 294 K at just 1 GPa, significantly reducing the required pressure for obtaining room temperature superconductivity. However, subsequent…

Superconductivity · Physics 2024-05-15 Zheng-Wei Liao , Xin-Wei Yi , Jing-Yang You , Bo Gu , Gang Su

We investigate the phase diagram of the \tj Model on a triangular lattice using a Variational Monte-Carlo approach. We use an extended set of Gutzwiller projected fermionic trial wave-functions allowing for simultaneous magnetic and…

Superconductivity · Physics 2007-05-23 Cédric Weber , Andreas Laeuchli , Frédéric Mila , Thierry Giamarchi

We report suppression of superconductivity in Bi4O4S3 compound by Se doping at S site. Bulk polycrystalline samples are synthesized by solid state reaction route. The Rietveld refined of XRD data of all the studied samples show that the…

Superconductivity · Physics 2014-03-05 Rajveer Jha , V. P. S. Awana

We synthesized a series of Nb$_{2}$Pd$_{1-x}$Ru$_{x}$S$_{5}$ polycrystalline samples by a solid-state reaction method and systematically investigated the Ru-doping effect on superconductivity by transport and magnetic measurements. It is…

Superconductivity · Physics 2017-04-11 Qian Chen , Xiaohui Yang , Xiaojun Yang , Jian Chen , Chenyi Shen , Pan Zhang , Yupeng Li , Qian Tao , Zhu-An Xu

Despite the highly porous nature with significantly large surface area, metal organic frameworks (MOFs) can be hardly used in electronic, and optoelectronic devices due to their extremely poor electrical conductivity. Therefore, the study…

Organic water-gated thin-film transistors (WG-TFTs) are of great interest in developing low-cost and high-performance biosensors. The device's sensitivity to changes in measurement conditions can impair long-term operation, and care must be…

By using solid state reaction method, we have synthesized the Pd-doped superconductor SrFe2-xPdxAs2. The systematic evolution of the lattice constants indicated that the Fe ions were successfully replaced by the Pd. By increasing the doping…

Superconductivity · Physics 2016-06-28 Xiyu Zhu , Fei Han Peng Cheng , Bing Shen , Hai-Hu Wen