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Related papers: Nernst Effect in Electron-Doped Pr$_{2-x}$Ce$_{x}$…

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We investigated the effects of Ni doping on carrier density and anomalous electrical transport properties in CeCo$_{1-x}$Ni$_x$In$_5$ ($x \leq 0.3$) by performing Hall resistivity measurements. The carrier density, estimated from the Hall…

We present a \asnmr Nuclear Magnetic Resonance (NMR) and resistivity study of the effect of 5.5 MeV proton irradiation on the optimal electron doped ($x=$ 0.068) and overdoped ($x=$ 0.107) Ba(Fe$_{1-x}$Rh$_x$)$_2$As$_2$ iron based…

Superconductivity · Physics 2017-09-26 M. Moroni , L. Gozzelino , G. Ghigo , M. A. Tanatar , R. Prozorov , P. C. Canfield , P. Carretta

We demonstrate that the zero-temperature superconducting phase diagram of underdoped cuprates can be quantitatively understood in the strong binding limit, using only the experimental spectral function of the "normal" pseudo-gap phase…

Superconductivity · Physics 2015-11-11 Yucel Yildirim , Wei Ku

We investigate the phase diagram of the electron-doped systems in high-Tc cuprates. We calculate the superconducting transition temperature Tc, the antiferromagnetic transition temperature TN, the NMR relaxation rate 1/T1 with the…

Superconductivity · Physics 2009-11-07 Akito Kobayashi , Atsushi Tsuruta , Tamifusa Matsuura , Yoshihiro Kuroda

Electron-doped and hole-doped superconducting cuprates exhibit a symmetric phase diagram as a function of doping. This symmetry is however only approximate. Indeed, electron-doped cuprates become superconductors only after a specific…

Infinite-layer Nd1-xSrxNiO2 thin films with Sr doping level x from 0.08 to 0.3 were synthesized and investigated. We found a superconducting dome to be between 0.12 and 0.235 which is accompanied by a weakly insulating behaviour in both…

The non-uniform current distribution arisen from either current crowding effect or hot spot effect provides a method to tailor the interaction between thermal gradient and electron transport in magnetically ordered systems. Here we apply…

Mesoscale and Nanoscale Physics · Physics 2024-09-17 Jiuming Liu , Bin Rong , Hua Bai , Xinqi Liu , Yanghui Liu , Yifan Zhang , Yujie Xiao , Yuzhen Liang , Qi Yao , Liyang Liao , Yumeng Yang , Cheng Song , Xufeng Kou

Thermodynamic critical field curves have been measured for $La_{2-x}Sr_{x}CuO_{4+\delta}$ over the full range of carrier concentrations where superconductivity occurs in order to determine changes in the normal state density of states with…

Superconductivity · Physics 2016-08-31 Yung M. Huh , D. K. Finnemore

We use neutron scattering to demonstrate that electron-doped superconducting Pr0.88LaCe0.12CuO4 in the underdoped regime is electronically phase separated in the ground state, showing the coexistence of a superconducting phase with a…

Superconductivity · Physics 2009-11-11 Pengcheng Dai , H. J. Kang , H. A. Mook , M. Matsuura , J. W. Lynn , Y. Kurita , Seiki Komiya , Yoichi Ando

We studied the superconducting (SC) state depletion process in an electron doped cuprate Pr$_{1.85}$Ce$_{0.15}$CuO$_{4-\delta}$ by pumping with near-infrared (NIR) and narrow-band THz pulses. When pumping with THz pulses tuned just above…

We have studied the thermopower of La_2CuO_{4+z} and Nd_2CuO_{4-y} which undergo an antiferromagnetic transition near room temperature and Bi_2Sr_{2-x}La_xCuO_{6+z} for which a broad spectrum of doping is possible. The thermopower of…

Superconductivity · Physics 2007-05-23 Mu-Yong Choi , J. S. Kim

The role of charge order in the phase diagram of high temperature cuprate superconductors has been recently re-emphasized by the experimental discovery of an incipient bi-directional charge density wave (CDW) phase in a class of underdoped…

Strongly Correlated Electrons · Physics 2024-02-20 Gargee Sharma , Chunxiao Liu , Kangjun Seo , J. D. Sau , Sumanta Tewari

After three decades of enormous scientific inquiry, the emergence of superconductivity in the cuprates remains an unsolved puzzle. One major challenge has been to arrive at a satisfactory understanding of the unusual metallic normal state…

Strongly Correlated Electrons · Physics 2019-02-28 Yangmu Li , W. Tabis , Y. Tang , G. Yu , J. Jaroszynski , N. Barišić , M. Greven

Doping of strongly layered ionic oxides is an established paradigm for creating novel electronic behavior. This is nowhere more apparent than in superconductivity, where doping gives rise to high temperature superconductivity in cuprates…

Superconductivity · Physics 2013-07-17 E. R. Ylvisaker , W. E. Pickett

The doping and energy evolution of the magnetic excitations of the electron-doped cuprate superconductor Pr$_{0.88}$LaCe$_{0.12}$CuO$_{4-\delta}$ in the superconducting state is studied based on the kinetic energy driven superconducting…

Superconductivity · Physics 2008-02-28 Li Cheng , Shiping Feng

Inelastic neutron scattering for Nd$_{2-x}$Ce$_x$CuO$_{4+\delta}$ near optimal doping ($x \approx 0.155$, $T_{c} = 25 \mathrm{K}$) reveals that the dynamic magnetic susceptibility at the antiferromagnetic zone center exhibits two…

Superconductivity · Physics 2008-12-01 G. Yu , Y. Li , E. M. Motoyama , K. Hradil , R. A. Mole , M. Greven

Xu et al. observed enhanced Nernst effect and Iguchi et al. observed patched diamagnetism, both well above $T_c$ in underdoped high-$T_c$ superconductors (HTSCs). A new mechanism is proposed here, which seems to naturally explain, at least…

Superconductivity · Physics 2009-11-10 Chia-Ren Hu

We have measured the low-energy quasiparticle excitation spectrum of the electron doped high-temperature superconductors (HTS) Nd(1.85)Ce(0.15)CuO(4-y) and Pr(1.85)Ce(0.15)CuO(4-y) as a function of temperature and applied magnetic field…

Superconductivity · Physics 2009-11-07 S. Kleefisch , B. Welter , M. Naito , A. Marx , L. Alff , R. Gross

A theory of the fluctuation-induced Nernst effect is developed for arbitrary magnetic fields and temperatures beyond the upper critical field line in a two-dimensional superconductor. First, we derive a simple phenomenological formula for…

Superconductivity · Physics 2009-02-09 M. N. Serbyn , M. A. Skvortsov , A. A. Varlamov , Victor Galitski

We report the observation of resistivity saturation in lightly doped ($x\sim 0.10)$ as-grown samples of the electron-doped cuprate La$_{2-x}$Ce$_x$CuO$_4$ (LCCO). The saturation occurs at resistivity values roughly consistent with the…

Strongly Correlated Electrons · Physics 2021-01-13 Nicholas R. Poniatowski , Tarapada Sarkar , Sankar Das Sarma , Richard L. Greene
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