Observation of A-B Phase Transition of Superfluid 3He by Transverse Acoustic Response

2006 ◽  
Author(s):  
M. Saitoh ◽  
Y. Wada ◽  
Y. Aoki ◽  
R. Nishida ◽  
R. Nomura ◽  
...  
Keyword(s):  
Phase Transition ◽  
Superfluid 3He ◽  
Acoustic Response ◽  
Transverse Acoustic

Pressure Dependence of the Transverse Acoustic Impedance of Superfluid 3He-B

2006 ◽  
Author(s):  
Y. Wada ◽  
Y. Aoki ◽  
M. Saitoh ◽  
R. Nishida ◽  
R. Nomura ◽  
...  
Keyword(s):  
Pressure Dependence ◽  
Acoustic Impedance ◽  
Superfluid 3He ◽  
Transverse Acoustic

Theory of Transverse Acoustic Impedance of Superfluid 3He

2007 ◽  
Vol 149 (5-6) ◽  
pp. 294-313 ◽  
Author(s):  
Y. Nagato ◽  
M. Yamamoto ◽  
S. Higashitani ◽  
K. Nagai
Keyword(s):  
Acoustic Impedance ◽  
Superfluid 3He ◽  
Transverse Acoustic

Transverse acoustic impedance of superfluid 3He–B

2005 ◽  
Vol 66 (8-9) ◽  
pp. 1352-1354 ◽  
Author(s):  
Yasushi Nagato ◽  
Mikio Yamamoto ◽  
Seiji Higashitani ◽  
Katsuhiko Nagai
Keyword(s):  
Acoustic Impedance ◽  
Superfluid 3He ◽  
Transverse Acoustic

Novel elastic evolution of carbide Mo2Ga2C under pressure: Ab initio theoretical investigation

2019 ◽  
Vol 33 (30) ◽  
pp. 1950358
Author(s):  
Rui Wu ◽  
Hai-Chen Wang ◽  
Yan Yang ◽  
Li Ma ◽  
Shan Jiang ◽  
...  
Keyword(s):  
Phase Transition ◽  
High Pressure ◽  
Elastic Constants ◽  
Pressure Dependence ◽  
First Principles ◽  
Phonon Mode ◽  
First Principles Calculation ◽  
Max Phases ◽  
Transverse Acoustic ◽  
Phonon Structure

The pressure dependence of elastic properties of Mo2Ga2C is studied via first-principles calculation. The present investigation shows that differing from other MAX phases, in Mo2Ga2C the [Formula: see text] is larger than [Formula: see text], because of the strong Ga–Ga interlayer bonds along [Formula: see text]-axis. Moreover, under pressure, the [Formula: see text] increases more rapidly, originating from the faster strengthening of Ga–Ga bonds. Interestingly, elastic constants [Formula: see text] soften under high pressure (more than 20 GPa). Especially, the calculated phonon structure demonstrates that transverse acoustic (TA) phonon mode also softens under pressure, implying possible phase transition. The reduction of [Formula: see text] and softening of phonon mode are attributed to significantly weakened Mo–Mo interaction in contrast to the strengthening of Ga–Ga bonds under high pressure. Our present results further indicate that Mo2Ga2C is more ductile under pressure.

Transverse Acoustic Spectroscopy of Superfluid 3He in Compressed Aerogel

2009 ◽  
Vol 158 (1-2) ◽  
pp. 176-181
Author(s):  
P. Bhupathi ◽  
B. H. Moon ◽  
M. Gonzalez ◽  
Y. Lee
Keyword(s):  
Superfluid 3He ◽  
Acoustic Spectroscopy ◽  
Transverse Acoustic

A-B Phase Transition and Pinning of Phase Boundary of Superfluid 3He in Aerogel

2006 ◽  
Author(s):  
Osamu Ishikawa ◽  
Ryusuke Kado ◽  
Hisashi Nakagawa ◽  
Ken Obara ◽  
Hideo Yano ◽  
...  
Keyword(s):  
Phase Transition ◽  
Phase Boundary ◽  
Superfluid 3He

A–B phase transition in rotating superfluid 3He

1994 ◽  
Vol 197 (1-4) ◽  
pp. 376-389 ◽  
Author(s):  
M. Krusius ◽  
E.V. Thuneberg ◽  
Ü. Parts
Keyword(s):  
Phase Transition ◽  
Superfluid 3He
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