2024-03-28T21:53:02Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/453822022-11-17T02:08:08Zhdl_2115_20057hdl_2115_148Transport Properties of Andreev Polarons in a Superconductor-Semiconductor-Superconductor Junction with Superlattice StructureInoue, RyotaroMuranaga, KentaTakayanagi, HideakiHanamura, EiichiJo, MasafumiAkazaki, TatsushiSuemune, Ikuo427Transport properties of a superconductor-semiconductor-superconductor (Su-Sm-Su) junction with superlattice structure are investigated. Differential resistance as a function of voltage shows oscillatory behavior under the irradiation of radio-frequency (rf) waves with the specific frequency of 1.77 GHz regardless of the superconducting materials and the junction geometries. Experimental data are quantitatively explained in terms of the coupling of superconducting quasiparticles with long-wavelength acoustic phonons indirectly excited by the rf waves. We propose that the strong coupling causes the formation of novel composite particles, Andreev polarons.American Physical SocietyJournal Articleapplication/pdfhttp://hdl.handle.net/2115/45382https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/45382/1/PRL106-15_157002.pdf0031-9007Physical Review Letters106151570022011-04-15enginfo:doi/10.1103/PhysRevLett.106.157002© 2011 American Physical Societypublisher