TY - JOUR
T1 - Observation of new structures in the collective mode spectrum of 3HeB
AU - Zhao, Zuyu
AU - Adenwalla, S.
AU - Shih, M. C.
AU - Ketterson, J. B.
AU - Sarmat, Bimal K.
N1 - Funding Information:
leading to a three fold mode splitting is dispersion and to lowest order the dispersion and superflow effects are additive.) A second feature we observed is a bump-like structure (Fig. 3) preceding the pair-breaking edge by 20pK with an external magnetic field perpendicular to the sound propagation direction. This structure was observed at 64.3 MHz for pressures between 4 and 7; it was absent in zero field. The data cluster around the position of the J, - -1, J = l-mode predicted by Schopohl et a1.(7) A more lengthy discussion of the above phenomena can be found in Ref. 8. This work was supported by the National Science Foundation under grant DMR 89-07396.
PY - 1990/8
Y1 - 1990/8
N2 - The single-ended, cw, impedance technique has been employed to study the squashing mode of 3.5. Superfluid 3HeB in a sound cell with a path length of 381 μm with ultrasound frequencies of 115.8 MHz and 141.6 MHz. A doublet splitting of the squashing mode has been observed and the magnitude of the splitting depends on the pressure. In addition, a "bump-like" structure, preceding the pair-breaking edge by about 3.5 MHz, has been observed with a sound frequency of 64.3 MHz in an applied magnetic field at pressures ranging from 4 to 7 bar.
AB - The single-ended, cw, impedance technique has been employed to study the squashing mode of 3.5. Superfluid 3HeB in a sound cell with a path length of 381 μm with ultrasound frequencies of 115.8 MHz and 141.6 MHz. A doublet splitting of the squashing mode has been observed and the magnitude of the splitting depends on the pressure. In addition, a "bump-like" structure, preceding the pair-breaking edge by about 3.5 MHz, has been observed with a sound frequency of 64.3 MHz in an applied magnetic field at pressures ranging from 4 to 7 bar.
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U2 - 10.1016/S0921-4526(90)81180-V
DO - 10.1016/S0921-4526(90)81180-V
M3 - Article
AN - SCOPUS:0025465947
VL - 165-166
SP - 661
EP - 662
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - PART 1
ER -