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Non-local quasiparticles in correlated quantum materials can exhibit the proximity effect. For instance, in metal superconductor hybrid systems, the leaking of cooper pairs to the metallic region induces superconducting correlations in a…

强关联电子 · 物理学 2023-03-29 Anurag Banerjee , Louis Haurie , Catherine Pépin

The hydrostatic pressure induced changes in the transport properties of monolayer (ML) MoS$_2$ have been investigated using first-principles density functional theory based calculations. The application of pressure induces shift in the…

材料科学 · 物理学 2023-08-02 Saumen Chaudhuri , Amrita Bhattacharya , A. K. Das , G. P. Das , B. N. Dev

Compelling efforts to improve the critical temperature ($T_{c}$) of superconductors have been made through high-pressure application. Understanding the underlying mechanism behind such improvements is critically important, however, much…

We report temperature-dependent transport and x-ray diffraction measurements of the influence of Ti hole doping on the charge density wave (CDW) in 1T-Ta(1-x)Ti(x)S(2). Confirming past studies, we find that even trace impurities eliminate…

Charge density wave (CDW) resulted from a small distortion in the lattice is able to create new orders beyond the original lattice. In 2H-NbSe2, one of the layered transition metal dichalcogenides (TMD), the 3x3 charge order appears in…

The discovery of a magnetic-field-induced charge-density-wave (CDW) order in the pseudogap state via nuclear magnetic resonance (NMR) studies has highlighted the importance of "charge" in the physics of high transition-temperature ($T_{\rm…

超导电性 · 物理学 2021-08-26 Shinji Kawasaki , Madoka Ito , Dai Kamijima , Chengtian Lin , Guo-qing Zheng

Single crystals of pristine and 6% Pd-intercalated 2H-TaSe$_2$ have been studied by means of $^{77}$Se nuclear magnetic resonance (NMR). The temperature dependence of the $^{77}$Se spectrum, with an unexpected line narrowing upon Pd…

强关联电子 · 物理学 2022-03-21 Seung-Ho Baek , Yeahan Sur , Kee Hoon Kim , Matthias Vojta , Bernd Buechner

The effect of hydrostatic pressure on the superconducting transition temperature of Na{0.35}CoO{2}.yH{2}O was investigated by ac susceptibility measurements up to 1.6 GPa. The pressure coefficient of T{c} is negative and the dependence…

超导电性 · 物理学 2009-11-10 B. Lorenz , J. Cmaidalka , R. L. Meng , C. W. Chu

Bulk electrical dissipation caused by charge-density-wave (CDW) depinning and sliding is a classic subject. We present a novel local, nanoscale mechanism describing the occurrence of mechanical dissipation peaks in the dynamics of an atomic…

介观与纳米尺度物理 · 物理学 2014-09-19 Franco Pellegrini , Giuseppe E. Santoro , Erio Tosatti

Charge density waves (CDWs) are understood in great details in one dimension, but they remain largely enigmatic in two dimensional systems. In particular, numerous aspects of the associated energy gap and the formation mechanism are not…

介观与纳米尺度物理 · 物理学 2021-01-19 Marcello Spera , Alessandro Scarfato , Árpad Pásztor , Enrico Giannini , David R. Bowler , Christoph Renner

Measurements of the magnetization under high hydrostatic pressure (up to 10.2 kbar) in YBa_2Cu_4O_8 were carried out. From the scaling analysis of the magnetization data the pressure induced shifts of the transition temperature T_c, the…

超导电性 · 物理学 2009-11-11 R. Khasanov , T. Schneider , H. Keller

The stability of a Charge Density Wave (CDW) in a one-dimensional ring pierced by a Aharonov-Bohm flux is studied in a mean-field picture. It is found that the stability depends on the parity of the number $N$ of electrons. When the size of…

介观与纳米尺度物理 · 物理学 2009-10-31 Gilles Montambaux

Proximity effect is a very powerful approach and has been widely applied to induce electron correlations such as: superconductivity, magnetism and spin-orbit effects at the interface of heterostructure quantum materials. However, proximity…

Using single crystal neutron and x-ray diffraction, we discovered a charge density wave (CDW) below 320 K, which accounts for the long-sought origin of the heat capacity and resistivity anomalies in UPt2Si2. The modulation wavevector, Qmod,…

Measurements of the nonlinear conductivity in NbSe$_3$ when the high-T and the low-T charge-density waves (CDWs) are simultaneously sliding have been performed. It is shown that the threshold electric field, $E_{t1}$, for depinning the…

强关联电子 · 物理学 2015-06-12 A. A. Sinchenko , P. Monceau

Clarifying the interplay between charge density waves (CDWs) and superconductivity is important in the kagome metal CsV$_3$Sb$_5$, and pressure ($P$) can play a crucial role. Here, we present $^{121/123}$Sb nuclear quadrupole resonance…

强关联电子 · 物理学 2023-05-17 X. Y. Feng , Z. Zhao , J. Luo , J. Yang , A. F. Fang , H. T. Yang , H. J. Gao , R. Zhou , Guo-qing Zheng

The collective charge density wave (CDW) conduction is modulated by a transverse single-particle current in a transistor-like device. Nonequilibrium conditions in this geometry lead to an exponential reduction of the depinning threshold,…

强关联电子 · 物理学 2009-10-31 N. Markovic , M. A. H. Dohmen , H. S. J. van der Zant

We study the dependence of the dimensional character of the charge-density wave (CDW) in TiSe$_2$ by a controlled variation of the number of available charge carriers in the conduction band. A change of dimensionality is realised by H2O…

强关联电子 · 物理学 2016-06-28 Matthias M. May , Christoph Janowitz , Recardo Manzke

Disorder is generically anticipated to suppress long range charge density wave (CDW) order. We report transport, thermodynamic, and scattering experiments on Pd$_x$ErTe$_3$, a model CDW system with disorder induced by intercalation. The…

强关联电子 · 物理学 2019-06-24 J. A. W. Straquadine , F. Weber , S. Rosenkranz , A. H. Said , I. R. Fisher

While stripe phases with broken rotational symmetry of charge density appear in many complex correlated systems, the heterogeneity of spatial ordering and dynamics remains elusive. This missing info is at the heart of understanding the…