Revealing novel quantum phases in quantum antiferromagnets on random lattices
Quantum magnets represent an ideal playground for the controlled realization of novel quantum phases and of quantum phase transitions. The Hamiltonian of the system can be indeed manipulated by applying a magnetic field or pressure on the sample. When doping the system with non-magnetic impurities...
Збережено в:
Дата: | 2009 |
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Автори: | , , |
Формат: | Стаття |
Мова: | English |
Опубліковано: |
Інститут фізики конденсованих систем НАН України
2009
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Назва видання: | Condensed Matter Physics |
Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/120289 |
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Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
Цитувати: | Revealing novel quantum phases in quantum antiferromagnets on random lattices / R. Yu, S. Haas, T. Roscilde // Condensed Matter Physics. — 2009. — Т. 12, № 3. — С. 519-530. — Бібліогр.: 34 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of UkraineРезюме: | Quantum magnets represent an ideal playground for the controlled realization of novel quantum phases and of
quantum phase transitions. The Hamiltonian of the system can be indeed manipulated by applying a magnetic
field or pressure on the sample. When doping the system with non-magnetic impurities, novel inhomogeneous
phases emerge from the interplay between geometric randomness and quantum fluctuations. In this paper
we review our recent work on quantum phase transitions and novel quantum phases realized in disordered
quantum magnets. The system inhomogeneity is found to strongly affect phase transitions by changing their
universality class, giving the transition a novel, quantum percolative nature. Such transitions connect conventionally
ordered phases to unconventional, quantum disordered ones quantum Grif ths phases, magnetic
Bose glass phases exhibiting gapless spectra associated with low-energy localized excitations. |
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