Role of impurities in bosonic quantum solids

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Presentation transcript:

Role of impurities in bosonic quantum solids E. Manousakis Department of Physics, Florida State University and Department of Physics, University of Athens, Greece

From Kim and Chan: 3He impurities

Impurities in Bosonic Solid: Lattice Model

B. Single Impurity

Fourth order processes delocalizing substitutional impurity

Second order process delocalizing interstitial impurity

Local pseudo-ferromagnetism (superfluidity)

Comparison of impurity dispersion with variational treatment

Comparison of dispersion obtained with variational treatment

Roughening Transition in Dilute 3He-4He mixtures Carmi et al., PRL 62, 1363 (1989)

Benedek et al. PRL 95, 095301(2005) and J. Low Temp. Phys