Abstract:
This work focuses on the study of mathematical aspects of upper critical magnetic
field of superconducting
HoM06SeS. At zero external magnetic field, HoM06SeS
)
was found to undergo a transition from the normal state to the superconducting
state at 5.6X and returned to a normal but magnetically ordered state between the
temperature range of O.3K and O.53K. The main objective of this work is to show
the temperature dependance of the upper critical magnetic field of superconduct
ing
HoMo
Ses by using the Ginzburg-Landau(GL) phenomenological equation. We
found the direct relationship between the GL coherence length(c;cd and penetration
depth (ACL) with temperature. From the GL equations and the results obtained for
the GL coherence length, the expression for upper critical magnetic field(H
6
tained for
the superconducting HoM06SeS'
The result is plotted as a function of temperature. The graph shows the linear de
pendance of
upper critical magnetic field(H
is in agreement with experimental observations.
c2
)
is ob
c2
)
with temperature(T) and our finding
Key ·words: Ginzburg-Landau equation, upper critical magnetic field and
HoMo
6
Ses
