Heavy-Fermion Systems

Sleep Disorders II covers various aspects of sleep disorders. These include the different classification of sleep disorders, the genetic influences of sleep disorders, abnormality in the sleeping pattern, and the circadian rhythm sleep disorder. A sleep disorder is a medical disorder that affects the sleeping patterns of humans (and sometimes animals). The disruptions in sleep can be caused by different factors, such as teeth grinding, night terrors, and the like. The book also discusses different perspectives on insomnia and hypersomnia. According to the International Classification of Sleep Disorders, insomnia is a sleep that is low in quality or a difficulty in sleeping. On the other hand, hypersomnia is a sleeping disorder characterized by excessive daytime sleepiness (EDS) or prolonged nighttime sleep. The book discusses narcolepsy, a syndrome that is characterized by excessive daytime sleepiness that is associated with cataplexy and other REM sleep phenomena. The different medicines for this disease are also discussed. People who are practicing neurology and internal medicine, especially those in pulmonary, cardiovascular, gastrointestinal, renal and endocrine specialties, will find this book valuable.The book on Heavy-Fermion Systems is a part of the Book series "Handbook of Metal Physics", each volume of which is written to facilitate the research of Ph.D. students, faculty and other researchers in a specific area. The Heavy-Fermions (sometimes known as Heavy-Electrons) is a loosely defined collection of intermetallic compounds containing rare-earth (mostly Ce) or actinide (mostly U) elements. These unusual names were given due to the large effective mass (100-1,000 times greater than the mass of a free electron) below a critical temperature. They have a variety of ground states including superconducting, antiferromagnetic, paramagnetic or semiconducting. Some display unusual magnetic properties such as magnetic quantum critical point and metamagnetism. This book is essentially a summary as well as a critical review of the theoretical and experimental work done on Heavy Fermions.