scholarly journals Effects of single defect position on the characteristics of Ginzburg-Landau free energy and potential differences of type-II superconductor

2020 ◽  
Author(s):  
Nizar R. Hardiyanto ◽  
Dyah E. Puspitasari ◽  
Eny Latifah ◽  
Hari Wisodo
Keyword(s):  
Free Energy ◽  
Type Ii ◽  
Ginzburg Landau ◽  
Single Defect ◽  
Defect Position ◽  
Landau Free Energy ◽  
Type Ii Superconductor

scholarly journals Effect of intensity and size of defect on Ginzburg-Landau free energy for type II superconductors

2020 ◽  
Author(s):  
Dyah Eka Puspitasari ◽  
Nizar Rahmanda Hardiyanto ◽  
Eny Latifah ◽  
Hari Wisodo
Keyword(s):  
Free Energy ◽  
Type Ii ◽  
Ginzburg Landau ◽  
Type Ii Superconductors ◽  
Landau Free Energy

Precursor Nanoscale Textures in Ferroelastics: Interplay between Anisotropy and Disorder

2013 ◽  
Vol 738-739 ◽  
pp. 155-159 ◽  
Author(s):  
Teresa Castán ◽  
Antoni Planes ◽  
Avadh Saxena
Keyword(s):  
Experimental Data ◽  
Free Energy ◽  
Ginzburg Landau ◽  
Landau Free Energy ◽  
Frozen State ◽  
Nanoscale Textures

We study the effect of anisotropy and disorder on the morphology of precursor microstructures within a Ginzburg-Landau free energy framework. In addition, with increasing disorder at low anisotropy we find a crossover from a twinned state to a non-transforming frozen state. Results are compared with available experimental data.

The Nernst effect in layered superconductors under a magnetic field

2016 ◽  
Vol 30 (22) ◽  
pp. 1650281 ◽  
Author(s):  
Bui Duc Tinh ◽  
Le Minh Thu ◽  
Nguyen Quang Hoc
Keyword(s):  
Thermal Noise ◽  
Gaussian Approximation ◽  
Landau Levels ◽  
Recent Experimental Data ◽  
Type Ii ◽  
Nernst Effect ◽  
Ginzburg Landau ◽  
Type Ii Superconductor ◽  
Self Consistent ◽  
Tdgl Equation

We calculated the Nernst signal [Formula: see text], describing the Nernst effect in type-II superconductor in the vortex–liquid regime, by using the time-dependent Ginzburg–Landau (TDGL) equation with thermal noise. The nonlinear interaction term in the TDGL equation is treated within self-consistent Gaussian approximation. The expression of the Nernst signal [Formula: see text] including all the Landau levels is presented in explicit form which is applicable essentially to the whole phase. Our results are compared with the recent experimental data on high-[Formula: see text] superconductor.

Existence of Minimizer to the Ginzburg-Landau Free Energy of Ferromagnetic System

2013 ◽  
Vol 444-445 ◽  
pp. 717-722
Author(s):  
Li Mei Li ◽  
Hong Luo
Keyword(s):  
Free Energy ◽  
Sobolev Space ◽  
Monotone Operator ◽  
Ginzburg Landau ◽  
Landau Free Energy ◽  
Lower Semi ◽  
Ferromagnetic System ◽  
Compact Imbedding

In this paper, we obtain the existence of minimizer to Ginzburg-Landau free energy of ferromagnetic system by coercivity and weakly lower semi-continuity of the free energy, where the weakly lower semi-continuity is derived from monotone operator condition and the Sobolev space compact imbedding theorem.

scholarly journals Pengaruh Variasi Dimensi Superkonduktor Berbentuk Persegi Panjang Terhadap Medan Kritis Pada Pada κ = 1,5

2020 ◽  
Vol 5 ◽  
Author(s):  
Alqaan Maqbullah Ilmi ◽  
Cari Cari ◽  
Fuad Anwar
Keyword(s):  
Equilibrium State ◽  
Critical Field ◽  
Time Dependent ◽  
Type Ii ◽  
Ginzburg Landau ◽  
Rectangular Shape ◽  
Type Ii Superconductor ◽  
Tdgl Equation

<p class="AbstractEnglish"><strong>Abstract:</strong> The Time Dependent Ginzburg-Landau (TDGL) equation can be used to study the characteristics of a superconductor in the evolution of time until it reaches an equilibrium state. This study uses the ѰU method to calculate the critical field value numerically which has been tested stable and consistent. Previous research has been carried out regarding the critical field ratio of rectangular and rectangular superconductors with the same area at κ = 1.5. This research examines the variation of the dimensions of the type II superconductor with a rectangular shape, then it is found that the critical field of the Hc<sub>3</sub> surface forms a pattern that can be used to study the characteristics of the type II superconductor.</p><p class="AbstrakIndonesia"><strong>Abstrak: </strong>Persamaan Ginzburg-Landau Gayut Waktu (Time Dependent Ginzburg-Landau/TDGL) dapat digunakan untuk mempelajari karakteristik superkonduktor dalam evolusi waktu sampai mencapai keadaan setimbang. Penelitian ini menggunakan metode ѰU untuk menghitung nilai medan kritis secara numerik yang telah teruji stabil dan konsisten. Telah dilakukan penelitian sebelumnya mengenai perbandingan medan kritis superkonduktor berbentuk persegi dan persegi panjang dengan luas sama pada κ = 1,5. Dalam penelitian ini dikaji variasi dimensi superkonduktor tipe II dengan bentuk persegi panjang, kemudian didapatkan bahwa medan kritis permukaan Hc<sub>3</sub> membentuk pola yang dapat digunakan untuk mempelajari karakteristik superkonduktor tipe II.</p>

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