FRACTAL AND DYNAMICAL PROPERTIES OF THE KICKED HARPER MODEL

1994 ◽  
Vol 08 (03) ◽  
pp. 207-235 ◽  
Author(s):  
R. ARTUSO ◽  
G. CASATI ◽  
F. BORGONOVI ◽  
L. REBUZZINI ◽  
I. GUARNERI
Keyword(s):  
Magnetic Field ◽  
State Physics ◽  
Phase Diagram ◽  
Quantum Chaos ◽  
Multifractal Analysis ◽  
Model System ◽  
Magnetic Field Effects ◽  
Solid State Physics ◽  
Rich Phase ◽  
Dynamical Properties

We review recent work on the so-called kicked Harper model, which can be viewed either as a model system in the framework of quantum chaos, or as a pulsed version of the Harper model, which has been thoroughly investigated in the context of magnetic field effects in solid state physics. In particular we describe its rich phase diagram, by means of both dynamical methods and multifractal analysis of the spectrum.

scholarly journals Specific heat ofCe1−xLaxRhIn5in zero and applied magnetic field: A rich phase diagram

2002 ◽  
Vol 66 (13) ◽  
Author(s):  
J. S. Kim ◽  
J. Alwood ◽  
D. Mixson ◽  
P. Watts ◽  
G. R. Stewart
Keyword(s):  
Magnetic Field ◽  
Phase Diagram ◽  
Specific Heat ◽  
Applied Magnetic Field ◽  
Rich Phase

ULTRA-HIGH MAGNETIC FIELD FACILITIES IN INSTITUTE FOR SOLID STATE PHYSICS, UNIVERSITY OF TOKYO

1983 ◽  
pp. 309-318 ◽  
Author(s):  
Giyuu Kido ◽  
Noboru Miura ◽  
Kazuo Nakamura ◽  
Hideki Miyajima ◽  
Koichi Nakao ◽  
...  
Keyword(s):  
Magnetic Field ◽  
State Physics ◽  
Solid State ◽  
High Magnetic Field ◽  
Solid State Physics

scholarly journals Phase Separation and Phase Diagram in Lightly Doped Manganites: Temperature and Magnetic Field Effects

1999 ◽  
Vol 52 (2) ◽  
pp. 247 ◽  
Author(s):  
Liang-Jian Zou ◽  
H. Q. Lin
Keyword(s):  
Magnetic Field ◽  
Phase Diagram ◽  
Phase Separation ◽  
Doping Concentration ◽  
Double Exchange ◽  
Magnetic Field Effects ◽  
Jahn Teller ◽  
Doped Manganites ◽  
And Shifts ◽  
Canted Phase

The effects of magnetic field and temperature on the phase separation and phase diagram of lightly doped manganites are studied. Based on the double exchange model with on-site Coulomb interaction, we show that in the case of a homogeneous charge distribution, the canting angle of localised core spins and the critical doping concentration of the system from canted phase to ferromagnetic (FM) phase become large because the effective FM coupling between localised core spins is weakened when the temperature increases. The boundary of the canted phase and FM phase shifts to a high doping concentration regime at high temperatures. In comparison with with the zero-temperature result, the phase separation can take place more easily in lightly doped manganites at finite temperatures. The application of a magnetic field decreases the energy of the FM cluster in the system, favours the separation of the hole-rich FM phase from the antiferromagnetic (AFM) background, and shifts the cant-FM border to the low doping regime. The effect of the Jahn-Teller electron-phonon coupling on the phase diagram and phase separation is also discussed.

Melting Temperature of MgO under Pressure

2013 ◽  
Vol 319 ◽  
pp. 19-22
Author(s):  
Shuai Zhang ◽  
Lei Chen
Keyword(s):  
State Physics ◽  
Phase Diagram ◽  
Melting Temperature ◽  
Surface Stress ◽  
Solid State Physics ◽  
Clapeyron Equation ◽  
The Earth ◽  
Pressure Phase ◽  
Effect Of Surface ◽  
Volume Difference

The melting temperature-pressure phase diagram [Tm(P)-P] for magnesium oxide (MgO) is predicted through the Clapeyron equation where the pressure-dependent volume difference is modeled by introducing the effect of surface stress induced pressure. MgO is a material of key importance to earth sciences and solid-state physics: it is one of the most abundant minerals in the Earth and a prototype material for a large group of ionic oxides.

scholarly journals PHASE TRANSITION INDUCED BY A MAGNETIC FIELD

1998 ◽  
Vol 13 (14) ◽  
pp. 1143-1154 ◽  
Author(s):  
G. W. SEMENOFF ◽  
I. A. SHOVKOVY ◽  
L. C. R. WIJEWARDHANA
Keyword(s):  
Magnetic Field ◽  
State Physics ◽  
Phase Transition ◽  
Order Parameter ◽  
Energy Gap ◽  
Chiral Symmetry Breaking ◽  
Mass Energy ◽  
Solid State Physics ◽  
Dynamical Mass ◽  
Magnetic Catalysis

The magnetic catalysis of discrete chiral symmetry breaking in the (2+1)-dimensional Nambu–Jona-Lasinio model is analyzed. Particular attention is paid to a possible application of the effect in solid state physics. The fermion contribution to the thermal conductivity as a function of the dynamical mass (energy gap in the spectrum) is estimated and is shown to be suppressed when a nonzero order parameter develops.

Applications of Transmission Electron Microscopy in the Characterization of Metal Machinability

1968 ◽  
Vol 26 ◽  
pp. 442-443 ◽  
Author(s):  
L.E. Murr ◽  
A.B. Draper
Keyword(s):  
Electron Microscopy ◽  
State Physics ◽  
Test Material ◽  
Milling Machine ◽  
Rotary Table ◽  
Solid State Physics ◽  
Materials Properties ◽  
Transmission Electron ◽  
Selection Of

The industrial characterization of the machinability of metals and alloys has always been a very arbitrarily defined property, subject to the selection of various reference or test materials; and the adoption of rather naive and misleading interpretations and standards. However, it seems reasonable to assume that with the present state of knowledge of materials properties, and the current theories of solid state physics, more basic guidelines for machinability characterization might be established on the basis of the residual machined microstructures. This approach was originally pursued by Draper; and our presentation here will simply reflect an exposition and extension of this research.The technique consists initially in the production of machined chips of a desired test material on a horizontal milling machine with the workpiece (specimen) mounted on a rotary table vice. A single cut of a specified depth is taken from the workpiece (0.25 in. wide) each at a new tool location.

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