@misc{akira2026a,
  title = {Vacancy-type defects introduced by mechanical polishing in ammonothermal GaN studied by a monoenergetic positron beam},
  author = {Akira Uedono, Shoji Ishibashi, Kohei Shima, Shigefusa F. Chichibu, Kacper Sierakowski, Makoto Oishi, Noriyuki Okada, Takuro Nagai, Michal Bockowski},
  publisher = {Elsevier BV},
  year = {2026-04-12},
  keywords = {Mechanical polishing, GaN, Vacancy, Defect, Positron annihilation}
}