scholarly journals Effect of pressure on the magnetic phase diagram of the antiferromagnetic spin density wave alloy Cr–1.6% Si

1997 ◽  
Vol 81 (8) ◽  
pp. 3877-3879 ◽  
Author(s):  
J. A. Fernandez-Baca ◽  
E. Fawcett ◽  
H. L. Alberts ◽  
V. Yu. Galkin ◽  
Y. Endoh
Keyword(s):  
Phase Diagram ◽  
Spin Density ◽  
Magnetic Phase ◽  
Density Wave ◽  
Spin Density Wave ◽  
Magnetic Phase Diagram ◽  
Effect Of Pressure ◽  
Antiferromagnetic Spin

Magnetic phase diagram of the spin-density-wave CrFe alloy system from susceptibility measurements

1997 ◽  
Vol 81 (8) ◽  
pp. 4207-4208 ◽  
Author(s):  
V. Yu. Galkin ◽  
P. C. de Camargo ◽  
N. Ali ◽  
E. Fawcett
Keyword(s):  
Phase Diagram ◽  
Spin Density ◽  
Magnetic Phase ◽  
Density Wave ◽  
Spin Density Wave ◽  
Magnetic Phase Diagram ◽  
Alloy System

scholarly journals Incommensurate Spin-Density Wave in Two-Dimensional Hubbard Model

2012 ◽  
Vol 190 ◽  
pp. 67-70 ◽  
Author(s):  
M.A. Timirgazin ◽  
Anatoly K. Arzhnikov ◽  
A.V. Vedyayev
Keyword(s):  
Phase Diagram ◽  
Hubbard Model ◽  
Ground State ◽  
Magnetic Phase ◽  
Density Wave ◽  
Spin Density Wave ◽  
Magnetic Phase Diagram ◽  
Two Dimensional ◽  
Magnetic Phases ◽  
Model Relation

We consider the magnetic phase diagram of the two-dimensional Hubbard model ona square lattice.We take into account both spiral and collinear incommensurate magnetic states.The possibility of phase separation of spiral magnetic phases is taken into consideration as well.Our study shows that all the listed phases appear to be the ground state at certain parametersof the model. Relation of the obtained results to real materials, e.g. Cu-based high-temperaturesuperconductors, is discussed.

Investigation of the elastic properties of UNI2Si2 as a function of temperature, magnetic field, and pressure

2003 ◽  
Vol 81 (6) ◽  
pp. 797-804 ◽  
Author(s):  
G Quirion ◽  
A Kelly ◽  
S Newbury ◽  
F S Razavi ◽  
J D Garrett
Keyword(s):  
Magnetic Field ◽  
Phase Diagram ◽  
Temperature Dependence ◽  
Elastic Properties ◽  
Magnetic Phase ◽  
Density Wave ◽  
Spin Density Wave ◽  
Magnetic Phase Diagram ◽  
75.40 Cx ◽  
62.20 Dc

It is now well-established that the strong anisotropy in the magnetic properties of the intermetallic compounds UT2Si2, where T stands for a transition metal, is responsible for their rich magnetic phase diagram. However, within that series of compounds, UNi2Si2 is one that shows an unusual sequence of magnetically ordered states. Thus, to better understand its unusual properties, we have investigated the elastic properties of UNi2Si2 as a function of temperature, magnetic field, and pressure. In all three magnetic phases, our measurements indicate that the sound-velocity temperature dependence is dominated by the magnetoelastic coupling. Moreover, the analysis of the temperature dependence for the incommensurate longitudinal spin-density wave phase is consistent with a critical exponent β = 0.38 ± 0.01. We also present the magnetic phase diagram for UNi2Si2 obtained at 0 and 8 kbar. Our investigation reveals that the triple-point coordinates (Tp, Hp) decrease with pressure at a rate of dTp/dP = –0.1 K/kbar and dHp/dP = –0.1 T/kbar, respectively. PACS Nos.: 75.30.kz, 62.20.Dc, 62.50.+p, 75.40.Cx

scholarly journals Spindigtheidsgolfgedrag van Cr-Si- en Cr-Ga-allooi-enkelkristalle

2000 ◽  
Vol 19 (1) ◽  
pp. 21-22
Author(s):  
A. R. E. Prinsloo
Keyword(s):  
Electrical Resistivity ◽  
Thermal Expansion ◽  
Phase Diagrams ◽  
Single Crystals ◽  
Spin Density ◽  
Ultrasonic Wave ◽  
Magnetic Phase ◽  
Density Wave ◽  
Spin Density Wave ◽  
Velocity Measurements

The spin-density-wave (SDW) effects in Cr-Si and Cr-Ga alloy single crystals were investigated by means of thermal expansion, electrical resistivity and ultrasonic wave velocity measurements. The complete temperature-concentration and temperature-pressure magnetic phase diagrams of Cr-Ga were constructed.

scholarly journals Effect of pressure on the superconducting and spin-density-wave states ofSmFeAsO1−xFx

2008 ◽  
Vol 78 (1) ◽  
Author(s):  
B. Lorenz ◽  
K. Sasmal ◽  
R. P. Chaudhury ◽  
X. H. Chen ◽  
R. H. Liu ◽  
...  
Keyword(s):  
Spin Density ◽  
Density Wave ◽  
Spin Density Wave ◽  
Effect Of Pressure ◽  
Wave States

PHASE DIAGRAM OF THE ONE-DIMENSIONAL t–U–J MODEL WITH ON-BOND REPULSION AT HALF FILLING

2010 ◽  
Vol 24 (32) ◽  
pp. 6307-6322 ◽  
Author(s):  
HANQIN DING ◽  
YANSHEN WANG
Keyword(s):  
Phase Diagram ◽  
Charge Density ◽  
Spin Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Spin Density Wave ◽  
Metallic Phase ◽  
Flow Diagram ◽  
One Dimensional ◽  
Bond Charge

By using the bosonization approach and the renormalization group (RG) technique, we study the half-filled band one-dimensional t–U–J model with additional on-bond repulsion (W>0) in the weak-coupling regime. The presence of on-bond repulsion is responsible for realization of a metallic phase in the system, and the phase diagram is strongly controlled by the symmetry of the model. By analyzing the RG flow diagram and comparing order parameters, the phase boundaries are determined and the structure of the phase diagram is clarified. In the case of SU (2) ⊗ SU (2) symmetry, the phase diagram consists of a metallic phase characterized by a Luttinger liquid (LL) and two insulting phases characterized by the degenerate spin-density-wave (SDW) and the bond-charge-density-wave (BCDW). In the SU (2) ⊗ U(1)-symmetric case, the phase diagram contains two metallic phases: a LL and a Luther–Emery phase, and three insulating phases: the transverse SDW ( SDW ±), the longitudinal SDW ( SDW z) and the dimerized BCDW. The insulating charge-density-wave and bond-spin-density-wave (BSDW) phases are always suppressed in the ground state. In addition, the system show a long-ranged order in the BCDW and SDW z phases.

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