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- Courant Institute of Mathematical SciencesUS7 papers
- Goddard Space Flight CenterUS7 papers
- Los Alamos National LaboratoryUS7 papers
- Princeton UniversityUS7 papers
- California Institute of TechnologyUS6 papers
- New York UniversityUS6 papers
- University of MichiganUS6 papers
- Johns Hopkins MedicineUS5 papers
- Massachusetts Institute of TechnologyUS5 papers
- Space Telescope Science InstituteUS5 papers
- University of TübingenDE5 papers
- Columbia UniversityUS4 papers
5 papers · 1 filter
Flux expulsion and greedy bosons: frustrated magnets at large N
O. Tchernyshyov, R. Moessner, S. L. Sondhi
We investigate the Sp(N) mean-field theory for frustrated quantum magnets. First, we establish some general properties of its solutions; in particular, for small spin we propose si…
Structural, orbital, and magnetic order in vanadium spinels
O. Tchernyshyov
Vanadium spinels (ZnV_2O_4, MgV_2O_4, and CdV_2O_4) exhibit a sequence of structural and magnetic phase transitions, reflecting the interplay of lattice, orbital, and spin degrees…
Valence-bond crystal in a {111} slice of the pyrochlore antiferromagnet
Oleg Tchernyshyov, Hong Yao, R. Moessner
We investigate theoretically the ordering effect of quantum spin fluctuations in a Heisenberg antiferromagnet on a two-dimensional network of corner sharing tetrahedra. This networ…
Quantum spin liquids: a large-S route
Oleg Tchernyshyov
This paper explores the large-S route to quantum disorder in the Heisenberg antiferromagnet on the pyrochlore lattice and its homologues in lower dimensions. It is shown that zero-…
Bond order from disorder in the planar pyrochlore magnet
O. Tchernyshyov, O. A. Starykh, R. Moessner +1
We study magnetic order in the Heisenberg antiferromagnet on the checkerboard lattice, a two-dimensional version of the pyrochlore network with strong geometric frustration. By emp…