Field and temperature dependence of thec-axis critical current inBi2Sr2CaCu2O8+δsingle crystals at the melting and two-dimensional decomposition fields

1995 ◽  
Vol 51 (10) ◽  
pp. 6655-6662 ◽  
Author(s):  
Sheng Luo ◽  
Guang Yang ◽  
C. E. Gough
Keyword(s):  
Temperature Dependence ◽  
Critical Current ◽  
Two Dimensional ◽  
Dimensional Decomposition

Pathway Complexity in the Stacking of Imine-linked Macrocycles Related to Two-Dimensional Covalent Organic Frameworks

2019 ◽  
Author(s):  
Shiwei Wang ◽  
Anton Chavez ◽  
Simil Thomas ◽  
Hong Li ◽  
Nathan C. Flanders ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Structural Similarity ◽  
Discrete Models ◽  
Side Chains ◽  
Two Dimensional ◽  
Assembly Process ◽  
Covalent Organic Frameworks ◽  
Electron Systems ◽  
Monomer Structure ◽  
Kinetic Traps

This work reports on the assembly of imine-linked macrocycles that serve as models of two-dimensional covalent organic frameworks (2D COFs). Interlayer interactions play an important role in the formation of 2D COFs, yet the effect of monomer structure on COF formation, crystallinity, and susceptibility to exfoliation are not well understood. For example, monomers with both electron-rich and electron-poor π-electron systems have been proposed to strengthen interlayer inter-actions and improve crystallinity. Here we probe these effects by studying the stacking behavior of imine-linked macrocycles that represent discrete models of 2D COFs. <div><br></div><div>Specifically, macrocycles based on terephthaldehyde (PDA) or 2,5-dimethoxyterephthaldehyde (DMPDA) stack upon cooling molecularly dissolved solutions. Both macrocycles assemble cooperatively with similar ΔHe values of -97 kJ/mol and -101 kJ/mol, respectively, although the DMPDA macrocycle assembly process showed a more straightforward temperature dependence. Circular dichroism spectroscopy performed on macrocycles bearing chiral side chains revealed a helix reversion process for the PDA macrocycles that was not observed for the DMPDA macrocycles. <br></div><div><br></div><div>Given the structural similarity of these monomers, these findings demonstrate that the stacking processes associated with nanotubes derived from these macrocycles, as well as for the corresponding COFs, are complex and susceptible to kinetic traps, casting doubt on the relevance of thermodynamic arguments for improving materials quality. <br></div>

Temperature dependence of the intragrain critical current density in polycrystalline Ag-sheathed Bi(2223) tapes

1999 ◽  
Vol 9 (2) ◽  
pp. 2659-2662 ◽  
Author(s):  
G. Grasso ◽  
M.R. Cimberle ◽  
C. Ferdeghini ◽  
A.S. Siri ◽  
F. Marti ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Temperature Dependence ◽  
Critical Current ◽  
Current Density

Temperature dependence of nuclear resonance frequencies in the two-dimensional ferromagnet K2CuF4

1973 ◽  
Vol 43 (1) ◽  
pp. 39-41 ◽  
Author(s):  
Le Dang Khoi ◽  
P. Veillet ◽  
J-P. Renard ◽  
C. Jacoboni
Keyword(s):  
Temperature Dependence ◽  
Nuclear Resonance ◽  
Two Dimensional ◽  
Resonance Frequencies

Tunneling-Type Temperature Dependence of Critical Current in Nb-Sn Point Contact

1980 ◽  
Vol 19 (8) ◽  
pp. L473-L474 ◽  
Author(s):  
Takashi Noguchi ◽  
Seiichi Takado ◽  
Seizo Morita ◽  
Nobuo Mikoshiba
Keyword(s):  
Temperature Dependence ◽  
Critical Current ◽  
Point Contact

Temperature dependence of the resistance of a two-dimensional topological insulator in a HgTe quantum well

2014 ◽  
Vol 89 (12) ◽  
Author(s):  
G. M. Gusev ◽  
Z. D. Kvon ◽  
E. B. Olshanetsky ◽  
A. D. Levin ◽  
Y. Krupko ◽  
...  
Keyword(s):  
Quantum Well ◽  
Temperature Dependence ◽  
Topological Insulator ◽  
Two Dimensional

TRANSPORT CHARACTERISTICS IN c-AXIS La2-xSrxCuO4 (LSCO) SINGLE CRYSTALS

2005 ◽  
Vol 19 (01n03) ◽  
pp. 447-450
Author(s):  
SANG-JAE KIM ◽  
TAKESHI HATANO
Keyword(s):  
Temperature Dependence ◽  
Single Crystals ◽  
Critical Current ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Etching Method ◽  
First Time ◽  
Small Voltage

c-axis micro-bridges of La 2-x Sr x CuO 4 ( LSCO ) single crystals were fabricated by the focused-ion-beam (FIB) etching method. Small rectangular LSCO pieces were fabricated by cutting and grinding single crystals of underdoped LSCO of x=0.09. The size of LSCO single crystals between electrodes was cut to 20×40μm2 in ab-plane by using the FIB etching method. Superconductor-insulator-superconductor (SIS) like-branch structures on I-V curves of the LSCO stacks were observed for the first time. The branch structures exhibited voltage jumps of several tens mV in the range of from 1.7 K to 5 K with temperature dependence. When the temperature is changed from 5 K to 1.7 K , the critical current and the next branch split into a few of small voltage jumps with the intervals of several mV in the range of from 0.1 mV and 2.0 mV .

Ordering kinetics of two-dimensional O(2) models: Scaling and temperature dependence

1995 ◽  
Vol 52 (2) ◽  
pp. 1550-1557 ◽  
Author(s):  
Jong-Rim Lee ◽  
Sung Jong Lee ◽  
Bongsoo Kim
Keyword(s):  
Temperature Dependence ◽  
Two Dimensional ◽  
Ordering Kinetics ◽  
Kinetics Of
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