Phase diagram of the ANNNI model at low temperatures I. Rigorous results

1986 ◽  
Vol 68 (1) ◽  
pp. 722-730
Author(s):  
A. E. Mazel'
Keyword(s):  
Phase Diagram ◽  
Low Temperatures ◽  
Rigorous Results ◽  
Annni Model

Multiple Superconducting Phases in UTe2: A Complex Analogy to Superfluid Phases of 3He

2021 ◽  
Vol 1 ◽  
Author(s):  
Shinsaku Kambe ◽  
Keyword(s):  
Phase Diagram ◽  
Physical Properties ◽  
Low Temperatures ◽  
Quantum Statistics ◽  
Superconducting Phases ◽  
Fermion Systems ◽  
Quantum Liquids ◽  
Wave Symmetry ◽  
Ferromagnetic Interactions ◽  
Ordered State

In quantum liquids, large differences are observed owing to differences in quantum statistics. The physical properties of liquid <sup>3</sup>He (Fermion) and <sup>4</sup>He (Boson) are considerably different at low temperatures. After the discovery of superconductivity in electron (i.e., Fermion) systems, a similar pairing ordered state was expected for <sup>3</sup>He. Remarkably, the observed ordered state of <sup>3</sup>He was more surprising than expected, multiple superfluid phases in the <em>T-P</em> phase diagram. The origin of the multiple phases was attributed to ferromagnetic interactions in the <em>p</em>-wave symmetry state.

Superconducting Properties and Possible Vortex Phase Diagram in a Thick Amorphous MgxB1-xFilm

2003 ◽  
Vol 17 (18n20) ◽  
pp. 3688-3693 ◽  
Author(s):  
S. Okuma ◽  
S. Togo ◽  
K. Amemori
Keyword(s):  
Phase Diagram ◽  
Glass Transition ◽  
Low Temperatures ◽  
Superconducting Properties ◽  
Vortex Phase Diagram ◽  
Vortex Phase ◽  
Current Voltage ◽  
Large Vortex ◽  
Field Temperature ◽  
Current Voltage Characteristics

We report on the superconducting properties in a thick amorphous Mg x B 1-x film, which was prepared by coevaporation of pure Mg and B. Measurements of the current-voltage characteristics and the AC complex resistivity in magnetic fields indicate the presence of the vortex-glass transition. Based on the data, we construct the possible phase diagram in the field-temperature plane. We find that there is the large vortex-liquid phase, which persists down to low temperatures.

scholarly journals Crystal structure of iron(III) perchlorate nonahydrate

2014 ◽  
Vol 70 (12) ◽  
pp. 477-479 ◽  
Author(s):  
Erik Hennings ◽  
Horst Schmidt ◽  
Wolfgang Voigt
Keyword(s):  
Crystal Structure ◽  
Phase Diagram ◽  
Liquid Phase ◽  
Low Temperatures ◽  
Point Group ◽  
Minor Component ◽  
Group Symmetry ◽  
Water Molecules ◽  
Point Group Symmetry ◽  
Solid Liquid

Since the discovery of perchlorate salts on Mars and the known occurrence of ferric salts in the regolith, there is a distinct possibility that the title compound could form on the surface of Mars. [Fe(H2O)6](ClO4)3·3H2O was crystallized from aqueous solutions at low temperatures according to the solid–liquid phase diagram. It consists of Fe(H2O)6octahedra (point group symmetry -3.) and perchlorate anions (point group symmetry .2) as well as non-coordinating water molecules, as part of a second hydrogen-bonded coordination sphere around the cation. The perchlorate appears to be slightly disordered, with major–minor component occupancies of 0.773 (9):0.227 (9).

Superconductivity and the magnetic phase diagram of DyNi2B2C at very low temperatures

1999 ◽  
Vol 259-261 ◽  
pp. 586-587 ◽  
Author(s):  
Klaus Winzer ◽  
Zhiqiang Peng ◽  
Klaus Krug
Keyword(s):  
Phase Diagram ◽  
Low Temperatures ◽  
Magnetic Phase ◽  
Magnetic Phase Diagram

MAGNETIC PHASE DIAGRAM OF PSEUDO-BINARY COMPOUNDS (Mn1–xFex)3Ga WITH THE D019 TYPE STRUCTURE

1993 ◽  
Vol 07 (01n03) ◽  
pp. 883-886
Author(s):  
T. HORI ◽  
H. NIIDA ◽  
Y. YAMAGUCHI ◽  
Y. NAKAGAWA
Keyword(s):  
Phase Diagram ◽  
Low Temperatures ◽  
Spin Structure ◽  
Magnetic Phase ◽  
Magnetic Phase Diagram ◽  
Hexagonal Structure ◽  
Orthorhombic Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Binary Compounds

We have made X-ray diffraction and magnetization measurements for pseudo-binary compounds (Mn1–xFex)3–δ Ga having the DO19 type hexagonal structure. For x≦0.1 the hexagonal structure is slightly distorted to an orthorhombic structure at low temperatures. The Néel temperature of the triangular spin structure decreases monotonically with increasing x, while the compounds with x>0.5 show the typical ferromagnetism. The magnetic phase diagram of the system is proposed.

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