Broadening of the surface Andreev bound states band of superfluid H3e-B on a partially specular wall

Yuichiro Wada; Satoshi Murakawa; Yuta Tamura; Masamichi Saitoh; Yuki Aoki; Ryuji Nomura; Yuichi Okuda

doi:10.1103/PhysRevB.78.214516

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Broadening of the surface Andreev bound states band of superfluid H3e-B on a partially specular wall

Yuichiro Wada, Satoshi Murakawa, Yuta Tamura, Masamichi Saitoh, Yuki Aoki, Ryuji Nomura, Yuichi Okuda

DOI 10.1103/PhysRevB.78.214516 · Physical Review B

T1

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Abstract

A measurement of the surface Andreev bound states of the superfluid H3e-B phase under different boundary conditions is presented. Transverse-acoustic impedance spectroscopy was used to determine the bandwidth of the bound states on a wall with various specularities. It was found that the band was broader for larger specularity and filled up the superfluid gap above a critical specularity. Specularity was controlled by coating the wall with thin layers of H4e and was evaluated separately using acoustic impedance measurement in the normal-fluid phase.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown