Role of impurities in bosonic quantum solids

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Role of impurities in bosonic quantum solids

• E. Manousakis
• Department of Physics, Florida State University
  and
• Department of Physics, University of Athens,
  Greece

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From Kim and Chan 3He impurities
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Impurities in Bosonic Solid Lattice Model
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B. Single Impurity
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Fourth order processes delocalizing
substitutional impurity
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Second order process delocalizing interstitial
impurity
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Local pseudo-ferromagnetism (superfluidity)
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Comparison of impurity dispersion with
variational treatment
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Comparison of dispersion obtained with
variational treatment
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Roughening Transition in Dilute 3He-4He mixtures
Carmi et al., PRL 62, 1363 (1989)
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Benedek et al. PRL 95, 095301(2005) and J. Low
Temp. Phys. 146, 393 (2007)