‘Supercritical’ point on the phase diagram of hematite in an external magnetic field

1996 ◽  
Vol 153 (1-2) ◽  
pp. 127-131 ◽  
Author(s):  
V.V. Nietz
Keyword(s):  
Magnetic Field ◽  
Phase Diagram ◽  
External Magnetic Field

Chiral condensate of cold dense quark matter with external magnetic field

2020 ◽  
Vol 35 (19) ◽  
pp. 2050160
Author(s):  
Song Shi ◽  
Juan Liu
Keyword(s):  
Magnetic Field ◽  
Phase Diagram ◽  
External Magnetic Field ◽  
Quark Matter ◽  
Chemical Potential ◽  
Field Approximation ◽  
Chiral Condensate ◽  
Mean Field Approximation ◽  
Dynamical Mass ◽  
Dense Quark Matter

At zero temperature and finite chemical potential, the gap equation of cold dense quark matter under external magnetic field is studied with NJL model in the mean-field approximation. By introducing new methods, it is found that the Nambu phase has sophisticated structures which have not been studied before. As a consequence, the phase diagram is expanded and divided into five areas, in each area the condensate has unique behaviors with chemical potential varying. Furthermore, the expanded phase diagram is used to predict the order of phase transition between the Nambu phase and the Wigner phase, it can also be used to explain the relations of dynamical mass and chemical potential. Meanwhile, the metastable states and cascade effect of dynamical mass are studied in this paper.

scholarly journals CRYSTAL-FIELD EFFECTS IN THE FIRST-ORDER VALENCE TRANSITION IN YbInCu4 INDUCED BY EXTERNAL MAGNETIC FIELD

2002 ◽  
Vol 16 (20n22) ◽  
pp. 3306-3306 ◽  
Author(s):  
M. DZERO
Keyword(s):  
Magnetic Field ◽  
Phase Transition ◽  
Phase Diagram ◽  
External Magnetic Field ◽  
Magnetic Fields ◽  
Crystal Field ◽  
Valence Transition ◽  
First Order ◽  
Field Effects ◽  
Wide Range

As it was shown earlier [Dzero, Gor'kov and Zvezdin, J. Phys.: Condens. Matt.12, L711 (1000)], the properties of the first-order valence phase transition in YbInCu4 in the wide range of magnetic fields and temperatures are perfectly described in terms of a simple entropy transition for free Yb ions. Within this approach, the crystal field effects have been taken into account and we show that the phase diagram in the B - T plane acquires some anisotropy with respect to the direction of an external magnetic field.

Sign in / Sign up

Export Citation Format

Share Document