Zobrazeno 1 - 10
of 196
pro vyhledávání: '"Gingras, Michel J. P."'
Autor:
Yadav, Lalit, Bag, Rabindranath, Dhakal, Ramesh, Winter, Stephen M., Rau, Jeffrey G., Kolesnikov, Alexander I., Podlesnyak, Andrey A., Brown, Craig M., Butch, Nicholas P., Graf, David, Gingras, Michel J. P., Haravifard, Sara
In this study, a novel material from the rare-earth based breathing pyrochlore family, Ba3Tm2Zn5O11, was successfully synthesized. Powder X-ray diffraction and high-resolution powder neutron diffraction confirmed phase purity and crystal structure, w
Externí odkaz:
http://arxiv.org/abs/2407.00222
Compass models provide insights into the properties of Mott-insulating materials that host bond-dependent anisotropic interactions between their pseudospin degrees of freedom. In this article, we explore the classical and quantum ground state propert
Externí odkaz:
http://arxiv.org/abs/2404.02196
Order-by-disorder, whereby fluctuations lift an accidental classical ground state degeneracy to stabilize a subset of ordered states, is a recurrent and prominent theme in the field of frustrated magnetism where magnetic moments, or spins, are subjec
Externí odkaz:
http://arxiv.org/abs/2403.02391
We introduce a novel geometrically frustrated classical Ising model, dubbed the "spin vorticity model", whose ground state manifold is a novel classical spin liquid, a "2-form Coulomb phase". We study the thermodynamics of this model both analyticall
Externí odkaz:
http://arxiv.org/abs/2310.17607
Autor:
Lozano-Gómez, Daniel, Noculak, Vincent, Oitmaa, Jaan, Singh, Rajiv R. P., Iqbal, Yasir, Reuther, Johannes, Gingras, Michel J. P.
Publikováno v:
Proc. Natl. Acad. Sci. U.S.A. 121, e2403487121 (2024)
Gauge theories are powerful tools in theoretical physics, allowing complex phenomena to be reduced to simple principles, and are used in both high-energy and condensed matter physics. In the latter context, gauge theories are becoming increasingly po
Externí odkaz:
http://arxiv.org/abs/2310.16682
Publikováno v:
Phys. Rev. Lett. 130, 266702 (2023)
Accidental ground state degeneracies -- those not a consequence of global symmetries of the Hamiltonian -- are inevitably lifted by fluctuations, often leading to long-range order, a phenomenon known as "order-by-disorder" (ObD). The detection and ch
Externí odkaz:
http://arxiv.org/abs/2301.11948
Autor:
Noculak, Vincent, Lozano-Gómez, Daniel, Oitmaa, Jaan, Singh, Rajiv R. P., Iqbal, Yasir, Gingras, Michel J. P., Reuther, Johannes
Publikováno v:
Phys. Rev. B 107, 214414 (2023)
We investigate the ground state and critical temperature phase diagrams of the classical and quantum $S=1/2$ pyrochlore lattice with nearest-neighbor Heisenberg and Dzyaloshinskii-Moriya interactions (DMI). We consider ferromagnetic and antiferromagn
Externí odkaz:
http://arxiv.org/abs/2211.08823
Autor:
Kiese, Dominik, Ferrari, Francesco, Astrakhantsev, Nikita, Niggemann, Nils, Ghosh, Pratyay, Müller, Tobias, Thomale, Ronny, Neupert, Titus, Reuther, Johannes, Gingras, Michel J. P., Trebst, Simon, Iqbal, Yasir
Publikováno v:
Phys. Rev. Research 5, L012025 (2023)
Pinch point singularities, associated with flat band magnetic excitations, are tell-tale signatures of Coulomb spin liquids. While their properties in the presence of quantum fluctuations have been widely studied, the fate of the complementary non-an
Externí odkaz:
http://arxiv.org/abs/2206.00264
Autor:
Dissanayake, Sachith, Shi, Zhenzhong, Rau, Jeffrey G., Bag, Rabindranath, Steinhardt, William, Butch, Nicholas P., Frontzek, Matthias, Podlesnyak, Andrey, Graf, David, Marjerrison, Casey, Liu, Jue, Gingras, Michel J. P., Haravifard, Sara
Publikováno v:
npj Quantum Materials volume 7, Article number: 77 (2022)
Ba3Yb2Zn5O11 is unique among breathing pyrochlore compounds for being in the nearly decoupled limit where inter-tetrahedron interactions are weak, hosting isolated clusters or "molecular magnet" like tetrahedra of magnetic ytterbium (Yb3+) ions. In t
Externí odkaz:
http://arxiv.org/abs/2111.06293
Autor:
Chung, Kristian Tyn Kai, Goh, Jeremy Swee Kang, Mukherjee, Aritro, Jin, Wen, Lozano-Gómez, Daniel, Gingras, Michel J. P.
In this paper, we illustrate how polarized neutron scattering can be used to isolate the spin-spin correlations of modes forming flat bands in a frustrated magnetic system hosting a classical spin liquid phase. In particular, we explain why the neare
Externí odkaz:
http://arxiv.org/abs/2108.07816