Collective Phenomena in Cold Indirect Excitons1
نویسنده
چکیده
Due to their long lifetimes, indirect excitons can cool to below the temperature of quantum degeneracy. This gives an opportunity to experimentally study cold composite bosons. Both theoretically predicted phenomena and phenomena that have not been anticipated were observed in a cold gas of indirect excitons. In this contribution, we overview our studies of cold indirect excitons over the past decade, presenting spontaneous coherence and condensation of excitons, spatially modulated exciton state, long-range spin currents and spin textures, and exciton localization–delocalization transitions. DOI: 10.1134/S1063776116030031
منابع مشابه
Condensation and pattern formation in cold exciton gases in coupled quantum wells
Bound electron–hole pairs—excitons—are light Bose particles with a mass comparable to or smaller than that of the free electron. Since the quantum degeneracy temperature scales inversely with the mass, it is anticipated that Bose–Einstein condensation of an exciton gas can be achieved at temperatures of about 1 K, orders of magnitude larger than the micro-Kelvin temperatures employed in atomic ...
متن کاملPossible Theories of Cold Fusion
— We review some of the key facts in the phenomenology of Pdhydrides usually referred to as «cold fusion». We conclude that all theoretical attempts that concentrate only on few-body interactions, both electromagnetic and nuclear, are probably insufficient to explain such phenomena. On the other hand we find good indications that theories describing collective, coherent interactions among eleme...
متن کاملEvaluation of the Mechanical Properties of the cement treated Cold-in-Place Recycled Asphalt Mixtures
Cold-in-place recycling (CIR) is an environmentally sustainable alternative for preservation of asphalt pavements. A major disadvantage of this practice is the lower strength of the cold-in-place mixtures. Addition of cement into this type of mixture is a method for increasing its bearing capacity. The effect of cement content on the mechanical properties of the cold-in-place recycled asphalt m...
متن کاملCold Fusion—From the Laboratory to the World Setting the Stage for ICCF-17
The objective of ICCF-17 is to allow international groups of scientists to present their data to further the collective understanding of scientists working in the field and so that skeptical members of the mainstream scientific community, the media, and the public will see the evidence that “cold fusion” is real. Indeed, several groups are currently developing commercial products that produce e...
متن کاملAnalyzing the Structural Relationships of Professional Learning Community and Teachers' Commitment with Mediator Role of Collective Efficacy
This study aimed to analysis structural relationships of professional learning community and teacher commitment with mediator role of collective efficacy. In order to do so, 323 Elementary teachers of Jiroft city were chosen as the research sample through cluster sampling. Required data regarding the variables of research were collected using the questionnaire of school professional learning com...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2016