Kim, DS Ko, HS Lim, YS Kim, YM Lee, JS Rhee, SJ Kim, WS Hong, SC Yee, YH Khim, JS Jung, JM Huhr, S Lee, JH Chang, JS Choe, BD Woo, JC Song, PH Choi, HJ Jhi, SH Ihm, J Shin, EJ Kim, D Woo, DH Kang, KN Song, JJ 2024-01-21T19:34:53Z 2024-01-21T19:34:53Z 2022-01-10 1996-06 0740-3224 https://pubs.kist.re.kr/handle/201004/144431 We discuss a few examples of cases in which the widely used mean-field approaches to alloys and alloy superlattices may not give complete solutions. These examples include the anomalously large Stokes and anti-Stokes real space-charge transfer over thick alloy barriers and the spatial extent of optical phonons in alloys and alloy superlattices, which have remained unsolved or controversial. We argue, both theoretically and experimentally, that approaches that fully account for inhomogeneities, partial ordering, and disorder effects in the alloys as well as the proper understanding of coupled quantum-mechanical systems do give answers to these important puzzles. (C) 1996 Optical Society of America English OPTICAL SOC AMER QUANTUM-WELL STRUCTURES RAMAN-SCATTERING LO PHONONS SEMICONDUCTORS RELAXATION VIBRATIONS EXCITONS DYNAMICS LATTICES MODEL Going beyond the mean-field approximations of alloys and alloy superlattices: A few puzzles solved? Article 10.1364/JOSAB.13.001210 1 JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, v.13, no.6, pp.1210 - 1223 JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS 13 6 1210 1223 scie scopus A1996UP79600015 2-s2.0-0030541452 Optics Optics Article QUANTUM-WELL STRUCTURES RAMAN-SCATTERING LO PHONONS SEMICONDUCTORS RELAXATION VIBRATIONS EXCITONS DYNAMICS LATTICES MODEL mean-field approximations