TY - JOUR
T1 - New Anomaly in the Transverse Acoustic Impedance of Superfluid He3-B with a Wall Coated by Several Layers of He4
AU - Murakawa, S.
AU - Tamura, Y.
AU - Wada, Y.
AU - Wasai, M.
AU - Saitoh, M.
AU - Aoki, Y.
AU - Nomura, R.
AU - Okuda, Y.
AU - Nagato, Y.
AU - Yamamoto, M.
AU - Higashitani, S.
AU - Nagai, K.
PY - 2009/10/5
Y1 - 2009/10/5
N2 - We measured the transverse acoustic impedance of superfluid He3-B with a wall coated by several layers of He4. The coating is known to enhance the specularity in quasiparticle scattering by the wall. We found a new anomaly, a bump and a peak, in the temperature dependence of the transverse acoustic impedance. This agrees with a theoretical calculation using a partially specular wall boundary condition. The new anomaly is shown to arise from a change in the surface density of states by coating and the scattering of thermally occupied surface bound states to other states. The change is towards the density of states of Majorana cone in the specular limit.
AB - We measured the transverse acoustic impedance of superfluid He3-B with a wall coated by several layers of He4. The coating is known to enhance the specularity in quasiparticle scattering by the wall. We found a new anomaly, a bump and a peak, in the temperature dependence of the transverse acoustic impedance. This agrees with a theoretical calculation using a partially specular wall boundary condition. The new anomaly is shown to arise from a change in the surface density of states by coating and the scattering of thermally occupied surface bound states to other states. The change is towards the density of states of Majorana cone in the specular limit.
UR - http://www.scopus.com/inward/record.url?scp=70349786078&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349786078&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.103.155301
DO - 10.1103/PhysRevLett.103.155301
M3 - Article
AN - SCOPUS:70349786078
SN - 0031-9007
VL - 103
JO - Physical Review Letters
JF - Physical Review Letters
IS - 15
M1 - 155301
ER -