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We report $^{115}$In nuclear magnetic resonance (NMR) measurements in CeCoIn$_5$ at low temperature ($T \approx 70$ mK) as a function of magnetic field ($H_0$) from 2 T to 13.5 T applied perpendicular to the $\hat c$-axis. NMR line shift…

强关联电子 · 物理学 2009-11-13 G. Koutroulakis , V. F. Mitrović , M. Horvatić , C. Berthier , G. Lapertot , J. Flouquet

We present NMR data in the normal and superconducting states of CeCoIn$_5$ for fields close to $H_{\rm c2}(0)=11.8$ T in the $ab$ plane. Recent experiments identified a first-order transition from the normal to superconducting state for $H>…

强关联电子 · 物理学 2013-05-29 B. -L. Young , R. R. Urbano , N. J. Curro , J. D. Thompson , J. L. Sarrao , A. B. Vorontsov , M. J. Graf

We present In NMR measurements in a novel thermodynamic phase of CeCoIn5 in high magnetic field, where exotic superconductivity coexists with the incommensurate spin-density wave order. We show that the NMR spectra in this phase provide…

超导电性 · 物理学 2015-05-27 K. Kumagai , H. Shishido , T. Shibauchi , Y. Matsuda

We report ^{115}In nuclear magnetic resonance (NMR) measurements in the heavy-fermion superconductor CeCoIn_5 as a function of temperature in different magnetic fields applied parallel to the $(\hat a, \hat b)$ plane. The measurements probe…

强关联电子 · 物理学 2009-11-13 V. F. Mitrović , G. Koutroulakis , M. -A. Vachon , M. Horvatić , C. Berthier , G. Lapertot , J. Flouquet

We present a ^{115}In NMR study of the quasi two-dimensional heavy-fermion superconductor CeCoIn_5 believed to host a Fulde-Ferrel-Larkin-Ovchinnkov (FFLO) state. In the vicinity of the upper critical field and with a magnetic field applied…

超导电性 · 物理学 2009-11-10 K. Kakuyanagi , M. Saito , K. Kumagai , S. Takashina , M. Nohara , H. Takagi , Y. Matsuda

By tuning superconductivity with an applied magnetic field, we use neutrons to compare the magnetic ordered phases in superconducting and normal states of CeCo$_{0.5}$Rh$_{0.5}$In$_{5}$. At zero field, CeCo$_{0.5}$Rh$_{0.5}$In$_{5}$…

We report $^{115}$In nuclear magnetic resonance (NMR) measurements of the heavy-fermion superconductor CeCoIn$_5$ in the vicinity of the superconducting critical field $H_{c2}$ for a magnetic field applied perpendicular to the $\hat…

强关联电子 · 物理学 2009-11-11 V. F. Mitrovic , M. Horvatic , C. Berthier , G. Knebel , G. Lapertot , J. Flouquet

Recent Nuclear Magnetic Resonance and elastic neutron scattering experiments have revealed conclusively the presence of static incommensurate magnetism in the field-induced B phase of CeCoIn5. We analyze the NMR data assuming the hyperfine…

强关联电子 · 物理学 2011-04-08 N. J. Curro , B. -L. Young , R. R. Urbano , M. J. Graf

We report neutron scattering experiment results revealing the nature of the magnetic order occurring in the heavy fermion superconductor Ce0.95Nd0.05CoIn5, a case for which an antiferromagnetic state is stabilized at a temperature below the…

强关联电子 · 物理学 2013-12-16 S. Raymond , S. M. Ramos , D. Aoki , G. Knebel , V. Mineev , G. Lapertot

We re-analyze Nuclear Magnetic Resonance (NMR) spectra observed at low temperatures and high magnetic fields in the field-induced B-phase of CeCoIn5. The NMR spectra are consistent with incommensurate antiferromagnetic order of the Ce…

超导电性 · 物理学 2011-04-08 Nicholas J. Curro , Ben-Li Young , Ricardo Urbano , Matthias J. Graf

The evolution of the magnetic excitation spectrum of the unconventional superconductor CeCoIn$_{5}$ was studied by inelastic neutron scattering as a function of magnetic field applied in the [1, -1, 0] direction. The spin resonance…

强关联电子 · 物理学 2009-11-13 J. Panarin , S. Raymond , G. Lapertot , J. Flouquet

The field-induced magnetic order in the singlet-ground-state system CsFeCl$_3$ has been studied by measuring magnetization and neutron diffraction. The field dependence of intensity for the neutron magnetic reflection has clearly…

The evolution of the antiferromagnetic order parameter in CeFeAsO_{1-x}F_{x} as a function of the fluorine content x was investigated primarily via zero-field muon-spin spectroscopy. The long-range magnetic order observed in the undoped…

Neutron and synchrotron resonant X-ray magnetic scattering (RXMS) complemented by heat capacity and resistivity measurements reveal the evolution of the magnetic structures of Fe and Ce sublattices in single crystal CeFeAsO. The RXMS of…

We report low-temperature $^{115}$In nuclear magnetic resonance (NMR) study of the prototypical heavy-fermion compound CeIrIn$_5$ in high magnetic fields applied close to the crystallographic $c$ axis. For this orientation, a field-induced…

强关联电子 · 物理学 2026-04-30 Y. Tokunaga , M. -T. Suzuki , S. Krämer , H. Sakai , S. Kambe , H. Harima , D. Aoki , M. Horvatić , I. Sheikin

The Nd1-xCexCoIn5 alloys evolve from local moment magnetism (x = 0) to heavy fermion superconductivity (x =1). Magnetic order is observed over a broad range of x. For a substantial range of x (0.83 <= x <= 0.95) in the temperature -…

强关联电子 · 物理学 2009-11-13 Rongwei Hu , Y. Lee , J. Hudis , V. F. Mitrovic , C. Petrovic

Spin-fluctuation-mediated unconventional superconductivity can emerge at the border of magnetism, featuring a superconducting order parameter that changes sign in momentum space. Detection of such a sign-change is experimentally…

We report ^{75}As nuclear magnetic resonance studies on an underdoped single-crystal Ba0.77K0.23Fe2As2 with Tc = 16.5 K. Below T_N = 46 K, the NMR peaks for H//c split and those for H //a shift to higher frequencies, which indicates that an…

超导电性 · 物理学 2012-11-07 Z. Li , R. Zhou , D. L. Sun , J. Yang , C. T. Lin , Guo-qing Zheng

We report high magnetic field linear magnetostriction experiments on CeCoIn$_5$ single crystals. Two features are remarkable: (i) a sharp discontinuity in all the crystallographic axes associated with the upper superconducting critical…

We investigated the magnetic field dependence of the superconducting phase transition in heavy fermion CeCoIn_5 (T_c = 2.3 K) using specific heat, magneto-caloric effect, and thermal expansion measurements. The superconducting transition…

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