Polar optic phonon scattering and mobility limited by such scattering are discussed for quantum wells with widths ranging between 10 nm and 2 nm.Numerical results are given for the InP/Ga0.47In0.53 As/InP system for both the bulkmode and the confined-mode models.Mobilities are found to be close to those given by the infinite-barrier, parabolic- band, bulk-mode model even when all the refinements of bulk-mode theory are taken into account or the analysis is made by using the confined-mode theory. © 1992 IOP Publishing Ltd.

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University of Calcutta (informally known as Calcutta University or CU) is a collegiate public state university located in Kolkata, West Bengal, India.&nbsp;Within India it is recognized as a &quot;Five-Star University&quot; and accredited &quot;A&quot; Grade by National Assessment and Accreditation Council.

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The University of Calcutta has secured the Fifth position among the Universities of India in the prestigious &quot;Indian University Ranking 2019&quot; list, released by the NIRF of the Ministry of Human Resource Development, Government of India.

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It was established on 24 January 1857, and was one of the first institutions in Asia to be established as a multidisciplinary and Western-style university. Its alumni and faculty include several heads of state, heads of government, social reformers, prominent artists, only academy award winner and Dirac medal winner in India, many Fellows of the Royal Society and five Nobel laureates as of 2019 which is highest in South Asia.

Journal	Japanese Journal of Applied Physics
Publisher	-
ISSN	0021-4922