# Browse by Subject "Physics, Condensed Matter"

• (1994)
The existence and behavior of ground-state and thermally-activated excitations in helium solids have been extensively examined by a variety of experimental and theoretical studies. Although these excitations are typically ...

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• (1971)

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• (1992)
The development of high performance heterostructure transistors is essential for emerging opto-electronic integrated circuits (OEICs) and monolithic microwave integrated circuits (MMICs). Applications for OEICs and MMICs ...

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• (1992)
This thesis contains basically three independent but related parts. In the first part, the concept of finite compressibility of a Fermi superfluid is used to reconsider the problem of inertial mass of vortex lines in both ...

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• (1981)
Extended x-ray absorption fine struture (EXAFS) spectra have been obtained for a group of layered transitional-metal dichalcogenide crystals, including the nonstoichiometric compounds Ti(,1+x)Se(,2) and the alloys ...

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• (1986)
Norm conserving pseudopotentials are implemented in the Hartree Fock formalism to study the local electronic response to X-Ray absorption in alkali metals and alloys. The pseudopotentials are tested in a variety of ...

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• (1996)
Doping of impurities may affect the Curie temperature (T$\sb{\rm c})$ associated with the ferroelectric phase transition in terms of lattice harmonicity and anharmonicity including the creation of the defect energy. Its ...

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• (1993)
Heavily doped p-type GaAs is important for both optical and electronic devices, and recently carbon has become the preferred base dopant for AlGaAs/GaAs and InGaP/GaAs heterojunction bipolar transistors (HBTs) due to its ...

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