TY - JOUR
T1 - Spectroscopic study of the surface density of states of superfluid He3 by transverse acoustic impedance measurements
AU - Saitoh, Masamichi
AU - Wada, Yuichiro
AU - Aoki, Yuki
AU - Murakawa, Satoshi
AU - Nomura, Ryuji
AU - Okuda, Yuichi
PY - 2006
Y1 - 2006
N2 - The surface density of states (SDOS) in superfluid He3 at a diffusive wall was investigated by systematic measurements of the transverse acoustic impedance Z. The observed difference between the temperature dependence of Z in the A and B phases can be explained by a difference in the SDOS of each phase. In the B phase, an additional gap in the SDOS opened between the upper energy edge Δ* of the surface Andreev bound states band and the bulk energy gap Δ. The temperature dependence of Δ* was measured and was about 30% smaller than the theoretical value. In the A phase, a flat and gapless SDOS was confirmed experimentally.
AB - The surface density of states (SDOS) in superfluid He3 at a diffusive wall was investigated by systematic measurements of the transverse acoustic impedance Z. The observed difference between the temperature dependence of Z in the A and B phases can be explained by a difference in the SDOS of each phase. In the B phase, an additional gap in the SDOS opened between the upper energy edge Δ* of the surface Andreev bound states band and the bulk energy gap Δ. The temperature dependence of Δ* was measured and was about 30% smaller than the theoretical value. In the A phase, a flat and gapless SDOS was confirmed experimentally.
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U2 - 10.1103/PhysRevB.74.220505
DO - 10.1103/PhysRevB.74.220505
M3 - Article
AN - SCOPUS:33845340493
SN - 1098-0121
VL - 74
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 22
M1 - 220505
ER -