scholarly journals Anisotropic phase diagram and superconducting fluctuations of single-crystalline SmFeAsO0.85F0.15

2011 ◽  
Vol 83 (10) ◽  
Author(s):  
U. Welp ◽  
C. Chaparro ◽  
A. E. Koshelev ◽  
W. K. Kwok ◽  
A. Rydh ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Single Crystalline ◽  
Superconducting Fluctuations ◽  
Anisotropic Phase

Highly reversible switching from P- to N-type NO2 sensing in a monolayer Fe2O3 inverse opal film and the associated P–N transition phase diagram

2015 ◽  
Vol 3 (7) ◽  
pp. 3372-3381 ◽  
Author(s):  
Zhengfei Dai ◽  
Chul-Soon Lee ◽  
Yahui Tian ◽  
Il-Doo Kim ◽  
Jong-Heun Lee
Keyword(s):  
Phase Diagram ◽  
Transition Phase ◽  
Inverse Opal ◽  
Transition Diagram ◽  
Single Crystalline ◽  
Opal Film

A monolayer α-Fe2O3 inverse opal film with single-crystalline rotocenters shows reversible NO2 p–n sensing switches tuned by a T–C transition diagram.

scholarly journals Superconducting fluctuations, pseudogap and phase diagram in cuprates

2010 ◽  
Vol 91 (3) ◽  
pp. 37005 ◽  
Author(s):  
H. Alloul ◽  
F. Rullier-Albenque ◽  
B. Vignolle ◽  
D. Colson ◽  
A. Forget
Keyword(s):  
Phase Diagram ◽  
Superconducting Fluctuations

QUANTUM SUPERCONDUCTING FLUCTUATIONS AND DISSIPATION IN VORTEX STATES

1996 ◽  
Vol 10 (06) ◽  
pp. 601-634 ◽  
Author(s):  
RYUSUKE IKEDA
Keyword(s):  
Phase Diagram ◽  
Vortex Flow ◽  
Mean Field ◽  
Feynman Graph ◽  
Transition Line ◽  
Single Vortex ◽  
Ginzburg Landau ◽  
Vortex States ◽  
Resistance Curves ◽  
Superconducting Fluctuations

Quantum effects on renormalized superconducting fluctuations are studied in the context of vortex states. It is argued by taking account of existing resistivity data that inclusion of dissipative (metallic) dynamics is indispensable at any nonzero temperature. Analysis is largely based on simple extensions of the usual time-dependent Ginzburg–Landau (TDGL) dynamics to quantum regime. First, phase diagram and dc conductivities resulting from a quantum GL action with purely dissipative dynamics are investigated, and it is noticed that, on (or, in the vicinity of) the transition line between the vortex lattice and the resulting quantum vortex liquid regime, the inverse of vortex flow conductance becomes a nearly universal value of the order of R q = 6.45 ( k Ω) and independent of material parameters. On the other hands, based on the usual Feynman graph analysis of Kubo formula, the superconducing (i.e. fluctuation) contribution to dc diagonal conductance decreases upon cooling in the disordered phase affected by quantum fluctuations, and becomes zero in T = 0 liquid regime [and above Hc2 (0)] irrespective of the details of dynamics. Reflecting these theoretical results, calculated resistance curves show the behavior quite similar to those observed in homogeneously disordered thin films, even though the presence of a field-tuned insulator–superconductor transition at T = 0 is neglected and the dynamics is purely dissipative. Phenomena in systems with quantum fluctuation of moderate strength are also considered. Analysis is also extended to the cases with other dynamical terms. It is pointed out that the usual (mean field) vortex flow Hall conductivity is never found in any nondissipative T = 0 liquid regime, and argued that, in general, the superconducting Hall effect itself is absent there at low enough fields irrespective of the presence of particle–hole assymmetry. Therefore, in contrast to the thermal vortex states with no pinning disorder, the dc transport phenomena at T = 0 are quite sensitive to the corresponding phase diagram, and hence, discussions based on the single vortex dynamics are even qualitatively invalid in the liquid regime at extremely low temperatures.

The Complex Electronic Phase Diagram of Single-Crystalline R2PdSi3 (R = Ho, Dy) Studied by Thermal Expansion and Magnetostriction

2019 ◽  
Vol 88 (9) ◽  
pp. 094709 ◽  
Author(s):  
Liran Wang ◽  
Binh Tran ◽  
Mingquan He ◽  
Christoph Meingast ◽  
Mahmoud Abdel-Hafiez ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Thermal Expansion ◽  
Single Crystalline ◽  
Electronic Phase ◽  
Electronic Phase Diagram

Anisotropic phase diagram at higher temperature for Tl2Ba2CaCu2O8thin film

2001 ◽  
Vol 14 (7) ◽  
pp. 457-462 ◽  
Author(s):  
L Shan ◽  
J K F Yau ◽  
X Jin ◽  
R T Lu ◽  
L Fang ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Higher Temperature ◽  
Anisotropic Phase

Anisotropic phase diagram of ferroquadrupolar ordering in the trigonal chiral compoundDyNi3Ga9

2019 ◽  
Vol 99 (7) ◽  
Author(s):  
Isao Ishii ◽  
Kohki Takezawa ◽  
Takuyou Mizuno ◽  
Soichiro Kumano ◽  
Takashi Suzuki ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Anisotropic Phase
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