Observation of Metallic Conductivity and Sharp Superconducting Transition at 19 K in Potassium-Doped Fulleride, C60, Single Crystal

In-plane resistance as a function of magnitude and direction of the magnetic field and the temperature has been measured for TmNi2B2C from above the superconducting transition temperature at 10.7 K to below the magnetic transition TN=1.5 K. The superconducting upper critical field HC2(T) exhibits a large anisotropy and structure in the vicinity of TN. The magnetoresistance above TC is large and changes sign as the direction of the magnetic field is rotated from in-plane to parallel with the c-axis.

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Characterization of the Superconducting Transition in Single-Crystal URu 2 Si 2

EPL (Europhysics Letters) ◽

10.1209/0295-5075/19/7/012 ◽

1992 ◽

Vol 19 (7) ◽

pp. 637-642 ◽

Cited By ~ 17

Author(s):

E. A Knetsch ◽

J. J Petersen ◽

A. A Menovsky ◽

M. W Meisel ◽

G. J Nieuwenhuys ◽

...

Keyword(s):

Single Crystal ◽

Superconducting Transition

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Study of the superconducting transition in YBa2Cu3O7−δ single crystal by thermopower measurements

Physica C Superconductivity ◽

10.1016/0921-4534(88)90156-6 ◽

1988 ◽

Vol 156 (5) ◽

pp. 765-768 ◽

Cited By ~ 3

Author(s):

Zhang Dian-lin ◽

Duan Hong-min ◽

Ma Bei-hai ◽

Lu Li ◽

Lin Shu-yuan

Keyword(s):

Single Crystal ◽

Superconducting Transition

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Single Crystal Growth and Superconducting Properties of Antimony Substituted NdO0.7F0.3BiS2

10.20944/preprints201712.0124.v1 ◽

2017 ◽

Author(s):

Satoshi Demura ◽

Satoshi Otsuki ◽

Yuita Fujisawa ◽

Hideaki Sakata

Keyword(s):

Crystal Growth ◽

Transition Temperature ◽

Single Crystal ◽

Superconducting Transition Temperature ◽

Single Crystal Growth ◽

Layered Superconductor ◽

Superconducting Transition ◽

Large Decrease ◽

Superconducting Properties ◽

Chemical Pressure

Antimony (Sb) Substitution less than 10 % is examined on a single crystal of a layered superconductor NdO0.7F0.3BiS2. Superconducting transition temperature of the substituted samples decreases with increasing Sb concentration. A lattice constant along the c axis showed a large decrease compared with that along the a axis. Since in-plane chemical pressure monotonically decreases with increasing Sb concentration, the suppression of the superconductivity is well described in terms of the decrease in in-plane chemical pressure.

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Verification of Nodeless Superconducting Pairing in Single-Crystal YBa2Cu3O7

International Journal of Modern Physics B ◽

10.1142/s0217979203021447 ◽

2003 ◽

Vol 17 (18n20) ◽

pp. 3582-3593 ◽

Cited By ~ 2

Author(s):

Dale R. Harshman ◽

W. J. Kossler ◽

X. Wan ◽

A. T. Fiory ◽

A. J. Greer ◽

...

Keyword(s):

Single Crystal ◽

Muon Spin ◽

Vortex Pinning ◽

Muon Spin Rotation ◽

Superconducting Transition ◽

S Wave ◽

Flux Lattice ◽

Field Dependent ◽

Superconducting Pairing ◽

D Wave

The temperature and field dependence of the penetration depth was determined from muon spin rotation (μ+ SR ) measurements on a single crystal of YBa 2 Cu 3 O 7 having a superconducting transition at Tc ≈ 91.3 K . Data were acquired at applied magnetic fields of 0.05, 1.0, 3.0, and 6.0 Tesla, yielding results inconsistent with any pairing state requiring nodes, including d-wave pairing. These data are, however, completely consistent with s-wave (or extended s-wave) superconductivity, with clear evidence of field-dependent, temperature-activated vortex pinning. Our results confirm the s-wave character originally observed in 1989, and show that the features of μ+ SR (and microwave) data used by other authors as evidence for d-wave superconductivity are instead due to temperature- and field-dependent vortex pinning/reordering, resulting in significant distortion of the flux lattice.

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The crossover from metal to semi-conductor in Cu-doped LiFeAs system

International Journal of Modern Physics B ◽

10.1142/s0217979215420230 ◽

2015 ◽

Vol 29 (25n26) ◽

pp. 1542023 ◽

Cited By ~ 4

Author(s):

L. Y. Xing ◽

X. C. Wang ◽

Z. Deng ◽

S. J. Zhang ◽

S. M. Feng ◽

...

Keyword(s):

Transition Temperature ◽

Single Crystal ◽

Doping Level ◽

Superconducting Transition Temperature ◽

Resistivity Measurement ◽

Superconducting Transition ◽

Cu Doping ◽

Semiconducting Behavior

A series of [Formula: see text] single crystal with the doping level [Formula: see text] were grown. The resistivity measurement was conducted. The results show that the 10% Cu doping completely suppresses superconducting transition temperature and when the doping level increases to 16%, it presents a semiconducting behavior in the region of 2 K to 300 K.

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Pr2CBr: Ein Ferromagnet mit Pr2C-Schichten/ Pr2CBr: A Ferromagnet with Pr2C Layers

Zeitschrift für Naturforschung B ◽

10.1515/znb-2009-0402 ◽

2009 ◽

Vol 64 (4) ◽

pp. 371-374 ◽

Cited By ~ 1

Author(s):

Hansjürgen Mattausch ◽

Reinhard K. Kremer ◽

Arndt Simon

Keyword(s):

Crystal Structure ◽

Single Crystal ◽

Single Phase ◽

Single Crystal Diffraction ◽

Space Group ◽

Metallic Conductivity ◽

X Ray ◽

Trigonal Prismatic

Single-phase Pr2CBr was prepared by heating a mixture of PrBr3, Pr and C (1 : 5:3) to 1140 °C for 18 d. The crystal structure was investigated by X-ray single crystal diffraction (space group P63/mmc, a = 3.8071(3), c = 14.7787(12) Å). In the structure the Pr atoms form C-centered octahedra condensed into Pr2C sheets via common edges; these sheets are separated by the Br atoms which are in a trigonal prismatic environment of Pr atoms. Pr2CBr is a black shiny compound with metallic conductivity. It is a ferromagnet with Tc = 13.8(5) K.

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Superconducting transition of single-crystal YBa2Cu3O7−x films

Synthetic Metals ◽

10.1016/0379-6779(89)90969-7 ◽

1989 ◽

Vol 29 (2-3) ◽

pp. 679-684

Author(s):

H. Mazaki ◽

T. Terashima ◽

Y. Bando

Keyword(s):

Single Crystal ◽

Superconducting Transition

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Aluminum Incorporation in Cuprate Perovskites

MRS Proceedings ◽

10.1557/proc-99-973 ◽

1987 ◽

Vol 99 ◽

Cited By ~ 1

Author(s):

T. Siegrist ◽

L. F. Schneemeyer ◽

J. V. Waszczak ◽

S. A. Sunshine ◽

N. P. Singh ◽

...

Keyword(s):

Single Crystal ◽

Single Crystals ◽

Diamagnetic Susceptibility ◽

Transition Temperatures ◽

Superconducting Transition ◽

X Ray Diffraction ◽

X Ray

ABSTRACTAluminum incorporation in cuprate perovskite single crystals has been studied by single crystal x-ray diffraction. We find that Al substitutes for copper in the Cu-O chains only. Superconducting transition temperatures, Tc, determined by dc diamagnetic susceptibility measurements, change only slightly, to «80K for ×=0.l, then drop sharply with higher aluminum concentrations.

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