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相关论文: NMR Evidence of Charge Fluctuations in Multiferroi…

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Spin fluctuations are reported near the magnetic field driven quantum critical point in YbRh2Si2. On cooling, ferromagnetic fluctuations evolve into incommensurate correlations located at q0=+/- (delta,delta) with delta=0.14 +/- 0.04 r.l.u.…

强关联电子 · 物理学 2015-06-05 C. Stock , C. Broholm , F. Demmel , J. Van Duijn , J. W. Taylor , H. J. Kang , R. Hu , C. Petrovic

Static and dynamical magnetic and electronic properties of the kagome metal Sc$_3$Mn$_3$Al$_7$Si$_5$ have been investigated by $^{27}$Al nuclear magnetic resonance (NMR) measurements. The temperature dependence of Knight shift ($K$) shows a…

We report first inelastic neutron scattering measurements in the normal state of Sr_2RuO_4 that reveal the existence of incommensurate magnetic spin fluctuations located at ${\bf q}_0=(\pm 0.6\pi/a, \pm 0.6\pi/a, 0)$. This finding confirms…

超导电性 · 物理学 2009-10-31 Y. Sidis , M. Braden , P. Bourges , B. Hennion. S. Nishizaki , Y. Maeno , Y. Mori

We present a high-pressure NMR study of the overdoped iron pnictide superconductor NaFe$_{0.94}$Co$_{0.06}$As. The low-energy antiferromagnetic spin fluctuations in the normal state, manifest as the Curie-Weiss upturn in the spin-lattice…

We have carried out the $^{11}$B NMR measurement on the itinerant paramagnetic systems U$M_{3}$B$_{2}$ ($M =$ Co, Ir) to investigate the low-dimensional characteristics of the $5f$-electrons due to the structural anisotropy. The recent…

强关联电子 · 物理学 2007-05-23 T. Fujimoto , H. Sakai , Y. Tokunaga , S. Kambe , R. E. Walstedt , S. Ikeda , J. Yamaura , T. D. Matsuda , Y. Haga , Y. Onuki

We report on NMR studies of the quasi--1D antiferromagnetic $S=1/2$ chain cuprate LiCuVO$_4$, focusing on the high--field spin--modulated phase observed recently in applied magnetic fields $H > H_{\rm c2}$ ($\mu_0H_{\rm c2} \approx 7.5$ T).…

材料科学 · 物理学 2010-02-12 N. Buttgen , W. Kraetschmer , L. E. Svistov , L. A. Prozorova , A. Prokofiev

We report $^{93}$Nb and $^{121}$Sb NMR and $^{57}$Fe M\"{o}ssbauer studies combined with DFT calculations of Nb$_{1-x}$Ti$_x$FeSb ($0\leqslant x \leqslant0.3$), one of the most promising thermoelectric systems for applications above 1000 K.…

We have studied the magnetic excitations in Ca$_{2-x}$Sr$_x$RuO$_4$, x=0.52 and 0.62, which exhibit an anomalous high susceptibility and heavy mass Fermi liquid behavior. Our inelastic neutron scattering experiments reveal strongly enhanced…

强关联电子 · 物理学 2016-08-31 O. Friedt , P. Steffens , M. Braden , Y. Sidis , S. Nakatsuji , Y. Maeno

We report 75As-nuclear quadrupole resonance (NQR) studies on (Ca_4Al_2O_{6-y})(Fe_2As_2) with Tc=27K, which unravel unique normal-state properties and point to unconventional nodeless superconductivity (SC). Measurement of…

超导电性 · 物理学 2015-05-28 H. Kinouchi , H. Mukuda , M. Yashima , Y. Kitaoka , P. M. Shirage , H. Eisaki , A. Iyo

The anomalous transport and thermodynamic properties in the quantum-critical region, in the cuprates, and in the quasi-two dimensional Fe-based superconductors and heavy-fermion compounds, have the same temperature dependences. This can…

强关联电子 · 物理学 2016-07-27 Chandra M. Varma

The frustrated one-dimensional (1D) quantum magnet LiCuSbO$_4$ is one rare realization of the $J_1-J_2$ spin chain model with an easily accessible saturation field, formerly estimated to 12~T. Exotic multipolar nematic phases were…

We report $^{75}$As- and $^{51}$V-nuclear magnetic resonance (NMR) measurements on the iron-based superconductor Sr$_2$VFeAsO$_3$ with alternating stacks structure. We find that the $^{75}$As nuclear spin-spin relaxation rate ($1/T_2$)…

超导电性 · 物理学 2014-05-14 Keiji Ueshima , Fei Han , Xiyu Zhu , Hai-Hu Wen , Shinji Kawasaki , Guo-qing Zheng

The ternary semiconductor AgInTe$_2$ is a thermoelectric material with chalcopyrite-type structure that transforms reversibly into a rocksalt-type structure under high pressure. Nuclear magnetic resonance (NMR) is considered to provide…

A comprehensive comparison between the magnetic field- and temperature-dependent low frequency spin dynamics in the antiferromagnetic spin-1/2 Heisenberg chain (AFHC) system copper pyrazine dinitrate, probed via the 13C-nuclear magnetic…

强关联电子 · 物理学 2015-05-19 H. Kuehne , A. A. Zvyagin , M. Guenther , A. P. Reyes , P. L. Kuhns , M. M. Turnbull , C. P. Landee , H. -H. Klauss

We have performed $^{69,71}$Ga nuclear magnetic resonance (NMR) and nuclear quadrupole resonance (NQR) and muon spin rotation/resonance on the quasi two-dimensional antiferromagnet (AFM) NiGa$_2$S$_4$, in order to investigate its spin…

强关联电子 · 物理学 2009-11-13 H. Takeya , K. Ishida , K. Kitagawa , Y. Ihara , K. Onuma , Y. Maeno , Y. Nambu , S. Nakatsuji , D. E. MacLaughlin , A. Koda , R. Kadono

The temperature dependence of the frequency shift and spin-lattice relaxation rate of isolated, nonmagnetic Li-8 impurities implanted in a nearly ferromagnetic host (Pd) are measured by means of beta-detected nuclear magnetic resonance…

We perform magnetic susceptibility and magnetic torque measurements on the organic $\kappa$-(BEDT-TTF)$_2$Hg(SCN)$_2$Br, which is recently suggested to host an exotic quantum dipole-liquid in its low-temperature insulating phase. Below the…

We report the results of {11}B nuclear magnetic resonance (NMR) measurements of SrB_{6} and Ca_{0.995}La_{0.05}B_{6} below room temperature. Although the electrical resistivities of these two materials differ substantially, their {11}B-NMR…

强关联电子 · 物理学 2009-10-31 J. L. Gavilano , Sh. Mushkolaj , D. Rau , H. R. Ott , A. Bianchi , D. P. Young , Z. Fisk

Temperature and field-dependent magnetization $M(H,T)$ measurements and neutron scattering study of a single crystal CeSb$_2$ are presented. Several anomalies in the magnetization curves have been confirmed at low magnetic field, i.e., 15.6…

材料科学 · 物理学 2020-08-26 B. Liu , L. Wang , I. Radelytskyi , Y. Zhang , M. Meven , H. Deng , F. Zhu , Y. Su , X. Zhu , S. Tan , A. Schneidewind

Unwanted fluctuations over time, in short, noise, are detrimental to device performance, especially for quantum coherent circuits. Recent efforts have demonstrated routes to utilizing magnon systems for quantum technologies, which are based…

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