Results 81 to 90 of about 6,538,230 (211)

Ginzburg-Landau theory for multiband superconductors: Microscopic derivation [PDF]

, 2013
A procedure to derive the Ginzburg-Landau (GL) theory from the multiband BCS Hamiltonian is developed in a general case with an arbitrary number of bands and arbitrary interaction matrix.
N. Orlova, A. Shanenko, M. Milovsevi'c, F. Peeters, A. Vagov, V. M. Axt   +5 more
semanticscholar   +1 more source

Modeling small‐angle scattering data of porous and/or bicontinuous structures in n dimensions

Journal of Applied Crystallography, EarlyView.
A small‐angle scattering fitting function is derived for porous materials with arbitrary fractal dimension. It includes a correlation peak and a power law at higher q.Fractal structures are often observed in small‐angle scattering experiments where a simple power law q−α describes the scattering intensity over many orders of magnitude.
Henrich Frielinghaus
wiley   +1 more source

Paving the way for future advancements in superconductivity research through gold ormus studies

Beni-Suef University Journal of Basic and Applied Sciences
Background Gold ormus is a type of superconductor that can exhibit superconductivity at temperatures below 1 Kelvin, allowing it to conduct electricity without resistance.
Mohamad Hasson, Mohamad Asem Alkourdi, Marwan Al-Raeei   +2 more
doaj   +1 more source

Analysis of Strong-Coupling Parameters for Superfluid 3He

, 2006
Superfluid $^{3}$He experiments show strong deviation from the weak-coupling limit of the Ginzburg-Landau theory, and this discrepancy grows with increasing pressure.
A.I. Ahonen, D.D. Osheroff, D.N. Paulson, D.S. Greywall, E.V. Thuneberg, E.V. Thuneberg, H. Choi, H. Choi, H.P. Ramm, I. Hahn, J. P. Davis, J. Pollanen, J.A. Sauls, J.B. Kycia, M.R. Rand, N.A. Greaves, R.A. Webb, R.E. Sager, R.F. Hoyt, R.S. Fishman, R.S. Fishman, T. M. Haard, U.E. Israelson, W. P. Halperin, Y.H. Tang   +24 more
core   +1 more source

Asymmetry of the Ferroelectric Phase Transition in BaTiO3

Advanced Materials, Volume 38, Issue 25, 4 May 2026.
Phase transitions are typically assumed to behave identically in forward and reverse. This work shows that in the ferroelectric material barium titanate this is not true: heating drives an abrupt, first‐order jump, while cooling gives a smooth, continuous change.
Asaf Hershkovitz, Elangovan Hemaprabha, Rajesh Mandal, Pravin Kavle, Jamil Tanus, Maya Barzilay, Ching‐Che Lin, David Spirito, Semën Gorfman, Bo Wang, Ignacio J. Villar‐García, Neus Domingo, Long‐Qing Chen, Lane W. Martin, Yachin Ivry   +14 more
wiley   +1 more source

Influence of external magnetic field, finite-size effects and chemical potential on the phase transition of a complex scalar field

European Physical Journal C: Particles and Fields, 2017
A scalar model is built, as a quantum field theory defined on a toroidal topology, to describe a phase transition in films subjected to periodic boundary conditions and influenced by an external and constant magnetic field. Criticality is studied and the
E. Cavalcanti, E. Castro, C. A. Linhares, A. P. C. Malbouisson   +3 more
doaj   +1 more source

Ginzburg-Landau theory of crystalline anisotropy for bcc-liquid interfaces [PDF]

, 2006
The weak anisotropy of the interfacial free energy $\ensuremath{\gamma}$ is a crucial parameter influencing dendritic crystal growth morphologies in systems with atomically rough solid-liquid interfaces. The physical origin and quantitative prediction of
Kuo-An Wu, A. Karma, J. Hoyt, M. Asta
semanticscholar   +1 more source

Boosting Photo‐Pyroelectric Effect via Tunable Polarization and Interfacial Defect Engineering

Advanced Science, Volume 13, Issue 25, 4 May 2026.
This study reports Ba(Ti0.85Zr0.15)O3 nanocatalysts with enhanced polarization and oxygen‐vacancy‐rich interfaces for efficient NIR‐II photo‐pyroelectric therapy. Zr doping boosts the pyroelectric coefficient and accelerates polarization switching, while oxygen vacancies improve photothermal conversion and surface reactivity.
Yanli Huang, Haifen Luo, Jie Yin, Shuai Cao, Gaolei Dong, Zhi Tan, Chunlin Zhao, Peiye Wen, Fengwei Sun, Shan Zhang, Xianzeng Zhang, Yunlu Dai, Zhen Yang, Wei Huang   +13 more
wiley   +1 more source

Scalings and limits of Landau-de Gennes models for liquid crystals: a comment on some recent analytical papers

Mathematical Modelling and Analysis, 2018
Some recent analytical papers have explored limiting behaviors of Landaude Gennes models for liquid crystals in certain extreme ranges of the model parameters: limits of “vanishing elasticity” (in the language of some of these papers) and “low ...
Eugene C. Gartland, Jr.
doaj   +1 more source

Post Gaussian effective potential in the Ginzburg Landau theory of superconductivity

, 2004
The post Gaussian effective potential in D=3 dimensions and the Gaussian effective potential in D=2+epsilon are evaluated for the Ginzburg-Landau theory of superconductivity.
Kim, Chul Koo, Rakhimov, A., Yee, Jae Hyung   +2 more
core   +1 more source