搜索结果: 1-15 共查到“凝聚态物理学 critical”相关记录23条 . 查询时间(0.046 秒)
Unconventional magnetic phase diagram of cuprate superconductor La2-xSrxCuO4 at quantum critical point x = 1/9
Unconventional magnetic phase diagram cuprate superconductor La2-xSrxCuO4 quantum critical point
2012/2/27
We propose a new magnetic phase diagram of La2-xSrxCuO4 around a quantum critical point x = 1/9 based on field-cooled magnetization measurements and critical fittings. A new phase boundary Tm2(H) is d...
Determining the Critical Temperature and Number of Frozen Layers in a Two-Dimensional Bed of Vibrating Hard Spheres Using a Global Equation of State
Critical Temperature Number of Frozen Layers Two-Dimensional Bed of Vibrating Hard Spheres
2010/11/25
Using a global equation of state, empirically derived by Luding, we ac-curately model the density profile of a two-dimensional hard sphere system with diameter D and mass m under gravity with a given ...
Influence of Rotations on the Critical State of Soil Mechanics
Influence of Rotations Critical State of Soil Mechanics
2010/11/25
The ability of grains to rotate can play a crucial role on the collective behavior of granular media. It has been observed in computer simulations that imposing a torque at the contacts modi es the fo...
Upper Critical Field of Pressure-Induced Superconductor EuFe$_2$As$_2$
Upper Critical Field Superconductor
2010/11/25
We have carried out high-field resistivity measurements up to 27T in EuFe2As2 at P =2.5GPa,
a virtually optimal pressure for the P-induced superconductivity, where Tc =30K. The Bc2−Tc
phase di...
Depairing critical current achieved in superconducting thin films with through-thickness arrays of artificial pinning centers
Depairing critical current through-thickness arrays artificial pinning centers
2010/11/24
Large area arrays of through-thickness nanoscale pores have been milled into superconducting Nb
thin lms via a process utilizing anodized aluminum oxide thin lm templates. These pores act as arti c...
Anisotropic upper critical field and a possible Fulde-Ferrel-Larkin-Ovchinnikov state in a stoichiometric pnictide superconductor LiFeAs
Anisotropic upper critical field possible Fulde-Ferrel-Larkin-Ovchinnikov state
2010/11/25
Measurements of the temperature and angular dependencies of the upper critical fields Hc2 of a
stoichiometric single crystal LiFeAs in pulsed magnetic fields up to 50 T were performed using a tunnel ...
Critical behavior of ferromagnetic pure and random diluted nanoparticles with competing interactions: variational and Monte Carlo approaches
Critical behavior of ferromagnetic pure random diluted nanoparticles interactions: variational
2010/11/23
The magnetic properties and critical behavior of both ferromagnetic pure and metallic nanopar-
ticles having concurrently atomic disorder, dilution and competing interactions, are studied in the fram...
Transport Phenomena in Fluids: Finite-size scaling for critical behavior
Transport Phenomena critical behavior
2010/11/19
Results for transport properties, in conjunction with phase behavior and thermodynamics, are
presented at the criticality of a binary Lennard-Jones fluid from Monte Carlo and molecular dy-
namics si...
Effect of anisotropy on the field induced quantum critical properties of the three dimensional s=1/2 Heisenberg model
Effect of anisotropy field induced quantum critical properties
2010/11/18
The field induced quantum critical properties of the three dimensional spin-1/2 anisotropic antifer-romagnetic Heisenberg model has been studied. We have investigated the quantum phase transition betw...
Interaction anisotropy and random impurities effects on the critical behaviour of ferromagnets
Interaction anisotropy random impurities effects critical behaviour of ferromagnets
2010/11/23
The theory of phase transitions is based on the consideration of "idealized" models, such as the Ising model: a system of magnetic moments living on a cubic lattice and having only two accessible stat...
Determination of the Upper Critical Field of a Single Crystal LiFeAs: The Magnetic Torque Study up to 35 Tesla
iron-based superconductor LiFeAs upper critical field anisotropy
2010/11/18
We report on the upper critical field Bc2 of a superconducting LiFeAs single crystal with
Tc ∼16K, determined from magnetic torque measurements in dc-magnetic fields up to 35T and
at temperatu...
Dynamic susceptibility of a spin-ice near the critical point
Dynamic susceptibility spin-ice near the critical point
2010/11/23
We consider spin ice magnets (primarily, Dy2Ti2O7) in the vicinity of their critical point on the (H, T )plane. We find that the longitudinal susceptibility diverges at the critical point, leading to ...
We report on the numerical measures on different spin interfaces and FK cluster boundaries
in the Askhin-Teller (AT) model. For a general point on the AT critical line, we find that the
fractal dime...
Magnetic reversal processes and critical thickness in FePt/α-Fe/FePt trilayers
nucleation field coercivity pinning field hysteresis loop critical thickness
2010/11/24
Magnetic reversal processes of a FePt/α-Fe/FePt trilayer system with in-plane easy axes have been investigated within a micromagnetic approach. It is found that the magnetic reversal process consists ...
Critical-doping universality for cuprate superconductors: Oxygen nuclear-magnetic-resonance investigation of Ca(x)La(1-x)Ba(1.75-x)La(0.25+x)Cu(3)O(y)
cuprate superconductors Oxygen nuclear-magnetic-resonance investigation
2010/11/18
The critical doping levels in cuprates, where the ground state changes its nature (from an an-
tiferromagnet to a spin glass to superconductor to metal), are not universal. We investigate the origin ...