Strong thermal fluctuations in cuprate superconductors in magnetic fields aboveTc

We performed low-temperature specific heat measurements on slightly underdoped samples of monolayer cuprate superconductors [Formula: see text] (Ln = La, Eu, Ln-Bi2201) under magnetic fields [Formula: see text]. In La-Bi2201, the coefficient [Formula: see text] of [Formula: see text]-linear term in the electronic specific heat [Formula: see text] at [Formula: see text] shows [Formula: see text] dependence, as expected in [Formula: see text] -wave superconductors. In Eu-Bi2201, [Formula: see text] shows almost the same [Formula: see text] dependence as that of La-Bi2201 below [Formula: see text] T, while [Formula: see text] is suppressed above [Formula: see text] T and deviates downward from the [Formula: see text] curve of La-Bi2201. This result suggests the the gap and the electronic excitation spectrum near nodes are modified in Eu-Bi2201 except the region of the Fermi surface in the immediate vicinity of nodes.

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Microwave Properties of Cuprate Superconductors in External Magnetic Fields

2007 International Kharkiv Symposium Physics and Engrg. of Millimeter and Sub-Millimeter Waves (MSMW) ◽

10.1109/msmw.2007.4294578 ◽

2007 ◽

Author(s):

N. Pompeo ◽

R. Rogai ◽

S. Sarti ◽

E. Silva

Keyword(s):

Magnetic Fields ◽

Cuprate Superconductors ◽

Microwave Properties

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Phase diagram of cuprate superconductors at ultrahigh magnetic fields

Brazilian Journal of Physics ◽

10.1590/s0103-97332003000400006 ◽

2003 ◽

Vol 33 (4) ◽

pp. 671-674 ◽

Cited By ~ 1

Author(s):

L. Krusin-Elbaum ◽

T. Shibauchi ◽

C. H. Mielke

Keyword(s):

Phase Diagram ◽

Magnetic Fields ◽

Cuprate Superconductors ◽

Ultrahigh Magnetic Fields

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Thermal Fluctuations in Pb–Ag–Pb (SNS) Josephson Junctions in Magnetic Fields

Journal of the Physical Society of Japan ◽

10.1143/jpsj.54.3061 ◽

1985 ◽

Vol 54 (8) ◽

pp. 3061-3066

Author(s):

Shoichi Nagata

Keyword(s):

Magnetic Fields ◽

Josephson Junctions ◽

Thermal Fluctuations

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Effects of static magnetic fields on thermal fluctuations in the melt of industrial CZ-Si crystal growth

Journal of Crystal Growth ◽

10.1016/j.jcrysgro.2011.11.080 ◽

2012 ◽

Vol 360 ◽

pp. 38-42 ◽

Cited By ~ 16

Author(s):

Xin Liu ◽

Lijun Liu ◽

Zaoyang Li ◽

Yuan Wang

Keyword(s):

Crystal Growth ◽

Magnetic Fields ◽

Thermal Fluctuations ◽

Static Magnetic Fields

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Tri-axial magnetic alignment and rare-earth-dependent tri-axial magnetic anisotropies in REBa2Cu4O8 cuprate superconductors

MRS Proceedings ◽

10.1557/opl.2013.1200 ◽

2013 ◽

Vol 1654 ◽

Author(s):

M. Yamaki ◽

M. Furuta ◽

T. Doi ◽

J. Shimoyama ◽

S. Horii

Keyword(s):

Magnetic Field ◽

Rare Earth ◽

Magnetic Fields ◽

Rare Earth Elements ◽

Single Crystals ◽

Cuprate Superconductors ◽

Ambient Pressure ◽

Axial Orientation ◽

Magnetic Alignment ◽

Flux Method

ABSTRACTWe report the growth of single crystals by a flux method in ambient pressure and tri-axial orientation under modulated rotation magnetic fields (MRFs) on REBa2Cu4O8 (RE124, RE; rare earth elements) compounds. RE124 crystals were grown for RE = Y, Sm, Eu, Gd, Dy, Ho, Er, Tm, and Yb through appropriate choice of source compounds. All the obtained RE124 powders were tri-axially aligned in MRF of 10T, whereas magnetization axes depended on the type of RE. Moreover, it was found from the changes in the degrees of c-axis and inplane orientation that tri-axial magnetic anisotropies of RE124 also depended on the type of RE. This indicates that it appropriate choice of RE is important for the fabrication of tri-axial oriented ceramics in lower magnetic field conditions.

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