Pressure Effect on Superconducting Critical Temperature According to String Model
نویسندگان
چکیده
منابع مشابه
Pressure effects on the electronic structure and superconducting critical temperature of Li2B2.
We present the structural, electronic and superconducting properties of Li2B2 under pressure within the framework of the density functional theory. The structural parameters, electronic band structure, phonon frequency of the E2g phonon mode and superconducting critical temperature Tc were calculated for pressures up to 20 GPa. We predicted that the superconducting critical temperature of Li2B2...
متن کاملMachine learning modeling of superconducting critical temperature
Valentin Stanev, 2 Corey Oses, 4 A. Gilad Kusne, 5 Efrain Rodriguez, 2 Johnpierre Paglione, 2 Stefano Curtarolo, 4, 8 and Ichiro Takeuchi 2 Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742-4111, USA Center for Nanophysics and Advanced Materials, University of Maryland, College Park, Maryland 20742, USA Department of Mechanical Engineering and Mater...
متن کاملIsotope effect on the superconducting critical temperature of cuprates in the presence of charge order
Using the large-N limit of the t–J model and also allowing for phonons and the electron–phonon interaction, we study the isotope effect α for coupling constants appropriate for YB2C3Oy. We find that α has a minimum at optimal doping and increases strongly (slightly) towards the underdoped (overdoped) region. Using values for the electron–phonon interaction from the local density approximation w...
متن کاملEffect of pressure on the superconducting transition temperature of doped and neutron-damaged MgB2
Measurements of the superconducting transition temperatures for Al-doped, Cdoped and neutron-damaged-annealed MgB2 samples under pressure up to ∼ 8 kbar are presented. The dTc/dP values change systematically with the decrease of the ambient pressure Tc in a regular fashion. The evolution of the pressure derivatives can be understood assuming that the change in phonon spectrum is a dominant cont...
متن کاملUsing inhomogeneity to raise the superconducting critical temperature in a two-dimensional XY model
Superconductors with low superfluid density are often dominated by phase fluctuations of the order parameter. In this regime, their physics may be described by XY models. The transition temperature Tc of such models is of the same order as the zero-temperature phase stiffness helicity modulus , a long-wavelength property of the system: Tc=A 0 . However, the constant A is a nonuniversal number, ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Fluid Mechanics & Thermal Sciences
سال: 2017
ISSN: 2469-8105
DOI: 10.11648/j.ijfmts.20170306.12