Michael Jurkutat

• Leipzig University

Cuprate superconductors still hold many open questions, and recently, the role of symmetry breaking electronic charge ordering resurfaced in underdoped cuprates as a phenomenon that competes with superconductivity. Here, unambiguous nuclear magnetic resonance (NMR) proof is presented for the existence of local charge ordering in nearly optimally do...

Cuprate superconductors still hold many open questions, in particular concerning their normal state properties, including the role of charge ordering. Nuclear magnetic resonance on $^{63,65}$Cu and $^{17}$O in the CuO$_2$ plane is a very sensitive bulk probe of charge variations, but not properly understood. Since early NMR, the oxygen satellite li...

Superstripes 2017 Quantum in Complex Matter: Superconductivity, Magnetism & Ferroelectricity Papers presented at the international conference Superstripes 2017 Ischia Italy June 4-10, 2017 Organized by Non profit organization for scientific research Superstripes onlus Rome International Center for Materials Science Superstripes - RICMASS Chairman...

Nuclear magnetic resonance (NMR) shifts, if stripped off their uncertainties, must hold key information about the electronic fluid in the cuprates. The early shift interpretation that favored a single-fluid scenario will be reviewed, as well as recent experiments that reported its failure. Thereafter, based on literature shift data for planar Cu a...

Since the discovery of high-temperature superconductivity in cuprates by Bednorz and Müller, NMR has contributed notably to our view and understanding of cuprate chemistry and physics, of which a brief account is given here. However, recent major insights from NMR that, at least in part, challenge certain views developed in the early years of cupra...

Charge inhomogeneities in the cuprates were reported early on and have been in the focus of much research recently. Nuclear magnetic resonance (NMR) is very sensitive to local charge symmetry through the electric quadrupole interaction that must detect any static charge density variation. Recent experiments in high magnetic fields that seem to indu...

Supplementary Figure 1, Supplementary Tables 1-2 and Supplementary References

Universal scaling laws can guide the understanding of new phenomena, and for cuprate high-temperature superconductivity such an early influential relation showed that the critical temperature of superconductivity ($T_c$) correlates with the density of the superfluid measured at low temperatures. This famous Uemura relation has been inspiring the co...

The local distribution of electrons and holes in the CuO2 plane of the high-temperature superconducting cuprates is determined with nuclear magnetic resonance through the quadrupole splittings of 17O and Cu63. Based on new data for single crystals of electron-doped Pr2−xCexCuO4 (x=0, 0.05, 0.10, 0.15) as well as Nd2−xCexCuO4 (x=0, 0.13) the changes...

The phase diagram of the superconducting cuprates is often used to show how their electronic properties change as a function of the mean doping level, i.e., the average hole content of the CuO$_2$ plane. In Nuclear Magnetic Resonance (NMR) experiments average doping, as well as the distribution of these holes between planar Cu and O reveals itself...

Nuclear Magnetic Resonance (NMR) of Cu and O has been applied successfully to probe locally the charge distribution in the CuO2 plane of the hole-doped cuprates. However, for the electron-doped systems, only insufficient Cu NMR data are available. Here, with a set of new 63Cu NMR experiments including double-resonance experiments, we examine the qu...

We report on the temperature dependence of $^{63}$Cu and $^{199}$Hg NMR magnetic shifts and linewidths for an optimally doped and an underdoped HgBa$_{2}$CuO$_{4+\delta}$ single crystal, as well as the quadrupole splitting and its distribution for $^{63}$Cu. From the $^{63}$Cu and $^{199}$Hg \textit{magnetic shifts} we have recently concluded on th...

We report the results from a (63)Cu nuclear magnetic resonance (NMR) study of the electron-doped high temperature superconducting cuprate (HTSC) Pr(1.85)Ce(0.15)Cu(1-x)Ni(x)O(4). We find that Ni induces a magnetic broadening of the (63)Cu NMR spectra that can be interpreted in terms of an induced spin density oscillation about the Ni site, similar...