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We demonstrate the phenomenon of induced-charge capacitive deionization (ICCDI) that occurs around a porous and conducting particle immersed in an electrolyte, under the action of an external electric field. The external electric field…

Fluid Dynamics · Physics 2016-12-21 S. Rubin , M. E. Suss , P. M. Biesheuvel , M. Bercovici

We calculate analytically the charge density $\rho_{\text{ind}}(\boldsymbol{r})$ at small distances induced by a Coulomb impurity in two-dimensional transition metal dichalcogenides. The calculations were performed exactly in the coupling…

Mesoscale and Nanoscale Physics · Physics 2024-08-20 V. K. Ivanov , I. S. Terekhov

Several material families show competition between superconductivity and other orders. When such competition is driven by doping, it invariably involves spatial inhomogeneities which can seed competing orders. We study impurity-induced…

Strongly Correlated Electrons · Physics 2018-01-17 Madhuparna Karmakar , R. Ganesh

The possibility of charge density oscillations in a {\it finite-thickness} two-dimensional system is investigated for strong magnetic fields and integer filling factors. Using an effective action formalism, it is shown that an {\it…

Condensed Matter · Physics 2007-05-23 S. Sakhi , P. Vasilopoulos

We present ab-initio electronic structure results on the surface of sqr3 adsorbates. In particular, we address the issue of metal-insulator instabilities, charge-density-waves (CDWs) or spin-density-waves (SDWs), driven by partly filled…

Materials Science · Physics 2009-10-31 S. Scandolo , F. Ancilotto , G. L. Chiarotti , G. Santoro , S. Serra , E. Tosatti

We have probed the effects of atomic-scale impurities on superconductivity in Bi_{2}Sr_{2}CaCu_{2}O_{8} by performing low-temperature tunneling spectroscopy measurements with a scanning tunneling microscope. Our results show that…

Superconductivity · Physics 2016-08-31 Ali Yazdani , C. M. Howald , C. P. Lutz , A. Kapitulnik , D. M. Eigler

The one-dimensional metallic states that appear at the zigzag edges of semiconducting two-dimensional transition metal di-chalcogenides (TMDCs) result from the intrinsic electric polarization in these materials, which for D$_{3h}$ symmetry…

Materials Science · Physics 2020-10-28 Sridevi Krishnamurthi , Mojtaba Farmanbar , Geert Brocks

The local density of states (LDOS) and its Fourier component induced by a unitary impurity in a supercurrent-carrying d-wave superconductor are investigated. Both of these quantities possess a reflection symmetry about the line passing…

Superconductivity · Physics 2009-11-10 Degang Zhang , C. S. Ting , C. -R. Hu

We present the results on the anomalous 2D transport behavior by employing Drude-Boltzmann transport theory and taking into account the realistic charge impurity scattering effects. Our results show quantitative agreement with the existing…

Strongly Correlated Electrons · Physics 2009-10-31 S. Das Sarma , E. H. Hwang , Igor Zutic

We describe the general phenomenon of `induced-charge electro-osmosis' (ICEO) -- the nonlinear electro-osmotic slip that occurs when an applied field acts on the ionic charge it {\sl induces} around a polarizable surface. Motivated by a…

Fluid Dynamics · Physics 2007-05-23 Todd M. Squires , Martin Z. Bazant

Surface effects on the electronic energy loss of charged particles entering a metal surface are investigated within linear-response theory, in the framework of time-dependent density functional theory. Interesting phenomena occur in the…

Materials Science · Physics 2007-05-23 A. Garcia-Lekue , J. M. Pitarke

In stark contrast to the conventional charge density wave (CDW) materials, the one-dimensional CDW on the In/Si(111) surface exhibits immediate damping of the CDW oscillation during the photoinduced phase transition. Here, by successfully…

Materials Science · Physics 2023-04-11 Yu-Xiang Gu§ , Wen-Hao Liu§ , Zhi Wang , Shu-Shen Li , Lin-Wang Wang , Jun-Wei Luo

The electronic properties of a Kondo impurity are investigated in a magnetic field using linear response theory. The distribution of electrical charge and magnetic polarization are calculated in real space. The (small) magnetic field does…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 Gerd Bergmann

An intuitive chemical perspective on the LK-99 material is outlined and supported by DFT calculations. A hidden flat Lead band that exhibits instability toward charge density wave formation is exposed. Electron transfer between Lead…

Superconductivity · Physics 2023-08-15 Itai Panas

In materials with strong local Coulomb interactions, simple defects such as atomic substitutions strongly affect both macroscopic and local properties of the system. A nonmagnetic impurity, for instance, is seen to induce magnetism nearby.…

Strongly Correlated Electrons · Physics 2015-05-13 H. Alloul , J. Bobroff , M. Gabay , P. J. Hirschfeld

While standard scaling arguments show that a system of non-interacting electrons in two dimensions and in the presence of uncorrelated disorder is insulating, in this work we discuss the case where inter-impurity correlations are included.…

Disordered Systems and Neural Networks · Physics 2009-11-10 M. Hilke

We calculate the modification of the local electronic structure caused by a local impurity on the surface of a 3D Topological Insulator. We find that the LDOS around the Dirac point of the electronic spectrum at the surface is significantly…

Materials Science · Physics 2013-11-25 Rudro R. Biswas , Alexander V. Balatsky

It is shown that, although the major feature of the microwave-induced magnetoresistance oscillations in two-dimensional (2D) electron systems is insensitive to the behavior of the elastic scattering in the photon-assisted impurity…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 X. L. Lei

We study the role of the onset of Shockley states, $D_s$, belonging to (111) surfaces of Cu, Ag and Au in the Kondo effect when a magnetic impurity is deposited on them. When $D_s$ approaches to the Fermi level, $E_F$, thing that can be…

Strongly Correlated Electrons · Physics 2019-11-06 J. Fernández , P. Roura-Bas

Theoretical model of a rough surface in a d-wave superconductor is studied for the general case of arbitrary strength of electron scattering by an impurity layer covering the surface. Boundary conditions for quasiclassical Eilenberger…

Superconductivity · Physics 2009-10-31 A. A. Golubov , M. Yu. Kupriyanov
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