Journal
PHYSICAL REVIEW LETTERS
Volume 103, Issue 15, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.103.155301
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Funding
- Global COE Program through the Nanoscience and Quantum Physics Project of Tokyo Tech
- MEXT, Japan [19540361, 20029009, 17071009]
- Grants-in-Aid for Scientific Research [20029009, 19540361, 17071009] Funding Source: KAKEN
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We measured the transverse acoustic impedance of superfluid He-3-B with a wall coated by several layers of He-4. 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.
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