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Muon spin rotation ($\mu$SR) measurements of internal magnetic field shifts, known as the muon Knight shift, is used for determining pairing symmetries in superconductors. While this technique has been especially effective for…

Many important questions for high-$T_c$ cuprates are closely related to the insulating nature of parent compounds. While there has been intensive discussion on this issue, all arguments rely strongly on, or are closely related to, the…

Cuprate superconductors have attracted extensive attention due to high critical temperatures. Conventional cuprates typically contain perfect CuO$_2$ planes which are considered as a key factor to superconductivity since the…

超导电性 · 物理学 2026-01-09 Jing-Xuan Wang , Rong-Qiang He , Zhong-Yi Lu

We show from a bond valence sum correlation that very high superconducting $ T_{c} $ values should be found in optimally hole-doped infinite-layer ACuO$ _{2} $ cuprates - up to 160~K for A = Ba. The projected increase in $ T_{c} $ across…

超导电性 · 物理学 2016-12-07 B. P. P. Mallett , N. Gaston , J. G. Storey , G. V. M. Williams , A. B. Kaiser , J. L. Tallon

In high-$T_c$ cuprates many quantities exhibit a non-Fermi liquid universality hinting at a very peculiar structure of the underlying pairing mechanism for superconductivity: in this work we focus on the universality for the in-plane…

超导电性 · 物理学 2016-05-06 P. A. Marchetti , G. Bighin

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…

超导电性 · 物理学 2017-05-23 Jürgen Haase , Michael Jurkutat , Jonas Kohlrautz

We report the results from a thermopower and a Cu nuclear magnetic resonance (NMR) study of the infinite CuO2 layer electron doped high temperature superconducting cuprate (HTSC), Sr0.9La0.1CuO2. We find that the temperature dependence of…

超导电性 · 物理学 2009-11-07 G. V. M. Williams , R. Dupree , A. Howes , S. Kramer , H. J. Trodahl , C. U. Jung , Min-Seok Park , Sung-Ik Lee

We investigate the diversity of dark matter (DM) density profiles in a large sample of late-type galaxies from the SPARC database, with the goal of testing whether a cusp-to-core transition occurs across galaxy mass scales. We perform…

星系天体物理 · 物理学 2026-01-27 Kohei Hayashi , Yuka Kaneda , Masao Mori , Michi Shinozaki

Generally strong charge and magnetic inhomogeneities are observed in NQR/NMR experiments on underdoped cuprates. It is not the case for the underdoped HgBa$_2$CuO$_{4+\delta}$, the most symmetric and highest T$_c$ single layer cuprate,…

超导电性 · 物理学 2016-03-04 Jia-Wei Mei , Alexey A. Soluyanov , T. M. Rice

Chemical substitution, combined with strain, allows the charge-transfer energy in hole-doped cuprates to be broadly tuned. We theoretically characterize the structural and electronic properties of the family of compounds $R_2$CuO$_2$S$_2$,…

超导电性 · 物理学 2014-03-25 Chuck-Hou Yee , Gabriel Kotliar

Both theoretical considerations and experimental data point to a more complicated nature of the valence hole states in doped cuprates than it is predicted by Zhang-Rice model. Actually, we deal with a competition of conventional hybrid Cu…

强关联电子 · 物理学 2009-11-10 A. S. Moskvin

Recently, scanning tunneling microscopy on Bi-2212 cuprate superconductor has revealed a spatial variation of the energy gap that is directly correlated with a modulation of the apical oxygen position. We identify two mechanisms by which…

超导电性 · 物理学 2016-09-08 M. Mori , G. Khaliullin , T. Tohyama , S. Maekawa

The interplay of charge orders with superconductivity in underdoped cuprates at high magnetic fields ($H$) is an open question, and even the value of the upper critical field ($H_{c2}$), a measure of the strength of superconductivity, has…

超导电性 · 物理学 2020-08-28 Zhenzhong Shi , P. G. Baity , T. Sasagawa , Dragana Popović

Recent nuclear magnetic resonance studies [A. Pustogow {\it et al.}, arXiv:1904.00047] have challenged the prevalent chiral triplet pairing scenario proposed for Sr$_2$RuO$_4$. To provide guidance from microscopic theory as to which other…

超导电性 · 物理学 2019-12-16 A. T. Rømer , D. D. Scherer , I. M. Eremin , P. J. Hirschfeld , B. M. Andersen

The sensitivity of Density Functional Theory plus Dynamical Mean Field Theory calculations to different constructions of the correlated orbitals is investigated via a detailed comparison of results obtained for the quantum material…

强关联电子 · 物理学 2021-05-12 Jonathan Karp , Alexander Hampel , Andrew J. Millis

We have performed inelastic neutron scattering measurements on the single-layer cuprate Bi2+xSr2-xCuO6+y (Bi2201) with x=0.2, 0.3, 0.4 and 0.5, a doping range that spans the spin-glass (SG) to superconducting (SC) phase boundary. The doping…

强关联电子 · 物理学 2013-02-06 M. Enoki , M. Fujita , T. Nishizaki , S. Iikubo , D. K. Singh , S. Chang , J. M. Tranquada , K. Yamada

Measurements of the $c$-axis penetration depth $\lambda_c$ in the cuprates reveal a low-temperature $T$ dependence which is inconsistent with simple models of coupling between the CuO$_2$ layers. In this paper, we examine whether a model…

凝聚态物理 · 物理学 2007-05-23 R. J. Radtke , V. N. Kostur

The recent discovery of superconductivity in hole-doped NdNiO$_2$ thin films has captivated the condensed matter physics community. Such compounds with a formal Ni$^+$ valence have been theoretically proposed as possible analogues of the…

There is a clear discrepancy among the energy-gap values for different 90 K cuprates, inferred from tunneling measurements. By using the phase diagram for hole-doped cuprates we show that tunneling measurements performed on 90 K cuprates,…

超导电性 · 物理学 2007-05-23 A. Mourachkine

We determine the magnetic phase diagram for the YBa$_2$Cu$_3$O$_{6+x}$ and La$_{2-x}$Sr$_x$CuO$_4$ systems from various NMR experiments. We discuss the possible interpretation of NMR and neutron scattering experiments in these systems in…

凝聚态物理 · 物理学 2009-10-28 V. Barzykin , D. Pines