1,380 research outputs found
Softening of Magnetic Excitations Leading to Pressure-Induced Quantum Phase Transition in Gapped Spin System KCuCl
KCuCl is a three dimensionally coupled spin dimer system, which undergoes
a pressure-induced quantum phase transition from a gapped ground state to an
antiferromagnetic state at a critical pressure of kbar.
Magnetic excitations in KCuCl at a hydrostatic pressure of 4.7 kbar have
been investigated by conducting neutron inelastic scattering experiments using
a newly designed cylindrical high-pressure clamp cell. A well-defined single
excitation mode is observed. The softening of the excitation mode due to the
applied pressure is clearly observed. From the analysis of the dispersion
relations, it is found that an intradimer interaction decreases under
hydrostatic pressure, while most interdimer interactions increase.Comment: 4 pages, 5 figures, 1 table, jpsj2.cls, to be published in J. Phys.
Soc. Jpn. Vol.76 (2007), the graphic problem of Fig.2 was fixe
Study of Anomalous Transport of Fast Ions Induced by Interaction with AEs Using Hybrid Directional Langmuir Probe (HDLP)
Spectroscopic Measurement of the Density Profile and the Divergence Angle of the Neutral Beam
Observation of an Impurity Hole in a Plasma with an Ion Internal Transport Barrier in the LHD
Characteristics of Anomalous Transport of Fast Ions Due to Bursting Energetic Particle Mode in CHS
- …