Surface tension and boundary conditions for superfluid Fermi liquid. Size effect and the effect of a magnetic field on the phase diagram

1975 ◽  
Vol 12 (11) ◽  
pp. 4825-4829 ◽  
Author(s):  
I. A. Privorotskii
1996 ◽  
Vol 46 (S1) ◽  
pp. 209-210
Author(s):  
M. Yu Kagan ◽  
M. A. Baranov ◽  
D. V. Efremov ◽  
M. S. Mar’enko

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
W. Knafo ◽  
M. Nardone ◽  
M. Vališka ◽  
A. Zitouni ◽  
G. Lapertot ◽  
...  

AbstractSuperconductivity induced by a magnetic field near metamagnetism is a striking manifestation of magnetically-mediated superconducting pairing. After being observed in itinerant ferromagnets, this phenomenon was recently reported in the orthorhombic paramagnet UTe2. Here we explore the phase diagram of UTe2 under two magnetic-field directions: the hard magnetization axis b, and a direction titled by ≃25-30° from b in the (b,c) plane. Zero-resistivity measurements confirm that superconductivity is established beyond the metamagnetic field Hm in the tilted-field direction. While superconductivity is locked exactly at fields either smaller (for H | | b), or larger (for H tilted by ≃27° from b to c), than Hm, the variations of the Fermi-liquid coefficient in the electrical resistivity and of the residual resistivity are similar for the two field directions. The resemblance of the normal states for the two field directions puts constraints for theoretical models of superconductivity and implies that some subtle ingredients must be in play.


2018 ◽  
Vol 32 (26) ◽  
pp. 1850289 ◽  
Author(s):  
A. Alrajhi ◽  
M. Madani ◽  
N. Hachem ◽  
M. El Bouziani

The ferrimagnetic mixed spin-1/2 and spin-1 cubic Ising nanowire is studied in the framework of the Monte Carlo simulation. The competition between the bilinear interaction and crystal field of spin-1 atoms as well as the nanowire size effect is highlighted. The corresponding phase diagram is discussed showing compensation points and critical second-order phase transitions. The effect of an external magnetic field and the hysteresis loops behavior are also carried out. Finally, we compare our results with other works in the literature.


2012 ◽  
Vol 116 (33) ◽  
pp. 17676-17681 ◽  
Author(s):  
Z.H.I. Sun ◽  
X. Guo ◽  
M. Guo ◽  
C. Li ◽  
J. Vleugels ◽  
...  

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Matúš Orendáč ◽  
Slavomír Gabáni ◽  
Pavol Farkašovský ◽  
Emil Gažo ◽  
Jozef Kačmarčík ◽  
...  

AbstractWe present a study of the ground state and stability of the fractional plateau phase (FPP) with M/Msat = 1/8 in the metallic Shastry–Sutherland system TmB4. Magnetization (M) measurements show that the FPP states are thermodynamically stable when the sample is cooled in constant magnetic field from the paramagnetic phase to the ordered one at 2 K. On the other hand, after zero-field cooling and subsequent magnetization these states appear to be of dynamic origin. In this case the FPP states are closely associated with the half plateau phase (HPP, M/Msat = ½), mediate the HPP to the low-field antiferromagnetic (AF) phase and depend on the thermodynamic history. Thus, in the same place of the phase diagram both, the stable and the metastable (dynamic) fractional plateau (FP) states, can be observed, depending on the way they are reached. In case of metastable FP states thermodynamic paths are identified that lead to very flat fractional plateaus in the FPP. Moreover, with a further decrease of magnetic field also the low-field AF phase becomes influenced and exhibits a plateau of the order of 1/1000 Msat.


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