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相关论文: Evidence for the FFLO state in CeCoIn_5 from penet…

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We report specific heat measurements of the heavy fermion superconductor CeCoIn5 in the vicinity of the superconducting critical field H_{c2}, with magnetic field in the [110], [100], and [001] directions, and at temperatures down to 50 mK.…

强关联电子 · 物理学 2009-11-10 A. Bianchi , R. Movshovich , C. Capan , A. Lacerda , P. G. Pagliuso , J. L. Sarrao

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 have measured the thermal conductivity of the heavy-fermion superconductor CeCoIn_5 in the vicinity of the upper critical field, with the magnetic field perpendicular to the c axis. Thermal conductivity displays a discontinuous jump at…

Angular dependent magnetothermal conductivity experiments on CeCoIn_5 indicate that this compound is a d-wave superconductor. In this study, the low-temperature behavior of the upper critical field is measured in a single crystal of…

Experimental evidence suggests that the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state may be realized in the unconventional, heavy-fermion superconductor CeCoIn$_5$. We present a self-consistent calculation of the field versus temperature…

超导电性 · 物理学 2007-05-23 A. B. Vorontsov , J. A. Sauls , M. J. Graf

Motivated by a striking observation of a Fulde-Ferell-Larkin-Ovchinnikov (FFLO) vortex state in the heavy fermion material CeCoIn5 in fields {\it perpendicular} to the superconducting planes (${\bf H} \parallel c$), superconducting phase…

超导电性 · 物理学 2009-11-13 Ryusuke Ikeda

A Fulde-Ferrell-Larkin-Ovchinnkov (FFLO) state was previously reported in the quasi-2D heavy fermion CeCoIn5 when a magnetic field was applied parallel to the ab-plane. Here, we conduct 115^In NMR studies of this material in a PERPENDICULAR…

超导电性 · 物理学 2009-11-11 K. Kumagai , M. Saitoh , T. Oyaizu , Y. Furukawa , S. Takashima , M. Nohara , H. Takagi , Y. Matsuda

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

The heavy-fermion superconductor CeCoIn$_5$ displays an additional transition within its superconducting (SC) state, whose nature is characterized by high-precision studies of the isothermal field dependence of the entropy, derived from…

强关联电子 · 物理学 2013-06-25 Y. Tokiwa , E. D. Bauer , P. Gegenwart

We present resistivity and thermal-conductivity measurements of superconducting FeSe in intense magnetic fields up to 35 T applied parallel to the $ab$ plane. At low temperatures, the upper critical field $\mu_0 H_{c2}^{ab}$ shows an…

A sufficiently high magnetic field applied to a superconductor will act on both the charge and the spin of the individual electrons breaking up the Cooper pairs. If the spin effect dominates, the superconducting state can develop a texture…

强关联电子 · 物理学 2007-05-23 H. A. Radovan , N. A. Fortune , T. P. Murphy , S. T. Hannahs , E. C. Palm , S. W. Tozer , D. Hall

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…

Single crystals of the layered organic type II superconductor, $\kappa$-(BEDT-TTF)$_{2}$Cu(NCS)$_{2}$, have been studied in magnetic fields of up to 33 T and at temperatures between 0.5 K and 11 K using a compact differential susceptometer.…

强关联电子 · 物理学 2009-11-07 J. Singleton , J. A. Symington , M. -S. Nam , A. Ardavan , M. Kurmoo , P. Day

The heavy-fermion superconductor CeCoIn5 is the first material, where different experimental probes show strong evidence pointing to the realization of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state. The inhomogeneous superconducting…

强关联电子 · 物理学 2009-11-13 M. Nicklas , C. F. Miclea , J. L. Sarrao , J. D. Thompson , G. Sparn , F. Steglich

Magnetization measurements were performed on CeCoIn_5 at temperature down to 30 mK with the magnetic field applied in three different orientations: parallel, near parallel ($\sim$ 10$^{0}$ rotated) and perpendicular to the ab-plane. For…

Temperature induced transition of thin superconductor-ferromagnet-normal (S/F/N) metal hybrid structure to in-plane Fulde-Ferrel-Larkin-Ovchinnikov (FFLO) state is accompanied by vanishing of effective inverse magnetic field penetration…

超导电性 · 物理学 2018-12-07 P. M. Marychev , D. Yu. Vodolazov

We show that a wide class of layered superconductor-ferromagnet (S/F) hybrids demonstrate the emergence of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phase well below the superconducting transition temperature. Decreasing the temperature…

超导电性 · 物理学 2018-08-29 S. V. Mironov , D. Yu. Vodolazov , Y. Yerin , A. V. Samokhvalov , A. S. Mel'nikov , A. Buzdin

We report upper critical field measurements in the metal-free-all-organic superconductor $\beta''$-(ET)$_{2}$SF$_{5}$CH$_{2}$CF$_{2}$SO$_{3}$ obtained from measuring the in-plane penetration depth using the tunnel diode oscillator…

超导电性 · 物理学 2009-06-19 K. Cho , B. E. Smith , W. A. Coniglio , L. E. Winter , C. C. Agosta , J. A. Schlueter

We report the phase diagram of $\lambda$-(BETS)$_2$GaCl$_4$ from rf penetration depth measurements with a tunnel diode oscillator in a pulsed magnetic field. We examined four samples with 1100 field sweeps in a range of angles with the…

超导电性 · 物理学 2015-03-13 William A. Coniglio , Laurel E. Winter , Kyuil Cho , C. C. Agosta , B. Fravel , L. K. Montgomery

Ultrasound velocity measurements of the unconventional superconductor CeCoIn_5 with extremely large Pauli paramagnetic susceptibility reveal an unusual structural transformation of the flux line lattice (FLL) in the vicinity of the upper…

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