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- H. Takeya2 profiles21 · h 35
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54 papers · 1 filter
Anisotropy in vortex phase diagram and the pinning force density in the basal plane of YNi_2B_2C
Pradip Das, C. V. Tomy, H. Takeya +2
We present magnetic field dependence of the critical current density from dc-magnetization measurements concerning the anisotropic behavior of flux line lattice (FLL) in a single c…
Peak effect phenomena, surface superconductivity and paramagnetic Meissner effect in a spherical single crystal of niobium
Pradip Das, C. V. Tomy, H. Takeya +2
We have explored the vortex phase diagram in a spherical single crystal of niobium (T ~ 9.3 K) via isothermal and temperature dependent dc magnetization and ac-susceptibility measu…
Thermo-magnetic history effects in the vortex state of YNi_2B_2C superconductor
Pradip Das, C. V. Tomy, H. Takeya +2
The nature of five-quadrant magnetic isotherms for is different from that for in a single crystal of YNi2B2C, pointing towards an anisotropic behaviour of the flux line lattice (FL…
Long-Range Magnetic Interactions Induced by the Lattice Distortions and the Origin of the E-type Antiferromagnetic Phase in the Undoped Orthorhombic Manganites
Igor Solovyev
With the increase of the lattice distortion, the orthorhombic manganites MnO ( La, Pr, Nd, Tb, and Ho) are known to undergo the phase transition from the layered A-typ…
Dynamically dominant excitations of string solutions in the spin-1/2 antiferromagnetic Heisenberg chain in magnetic fields
Masanori Kohno
Using Bethe-ansatz solutions, we uncover a well-defined continuum in dynamical structure factor of the spin-1/2 antiferromagnetic Heisenberg chain in magnetic fields.…
Colossal electroresistance and colossal magnetoresistive step in paramagnetic insulating phase of single crystalline bilayered manganite(LaPr)SrMnO
Y. Yamato, M. Matsukawa, R. Suryanarayanan +5
We report a significant decrease in the low-temperature resistance induced by the application of an electric current on the -plane in the paramagnetic insulating (PMI) state of…