Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Wachtel, Gideon"'
Autor:
Wachtel, Gideon, Orgad, Dror
Publikováno v:
Phys. Rev. B 99, 115104 (2019)
The honeycomb $K-\Gamma$ model is known to have both deconfined spin liquid and confined phases. We study here a confinement transition between the Kitaev spin liquid and a dimerized phase in the limit of strong bond anisotropy. By partially projecti
Externí odkaz:
http://arxiv.org/abs/1811.05499
Autor:
Samarakoon, Anjana M., Wachtel, Gideon, Yamaji, Youhei, Tennant, D. A., Batista, Cristian D., Kim, Yong Baek
Publikováno v:
Phys. Rev. B 98, 045121 (2018)
Quantum to classical crossover is a fundamental question in dynamics of quantum many-body systems. In frustrated magnets, for example, it is highly non-trivial to describe the crossover from the classical spin liquid with a macroscopically-degenerate
Externí odkaz:
http://arxiv.org/abs/1803.00601
Publikováno v:
Phys. Rev. B 96, 224516 (2017)
Motivated by theory and experiments on strain induced pseudo-Landau levels (LLs) of Dirac fermions in graphene and topological materials, we consider its extension for Bogoliubov quasiparticles (QPs) in a nodal superconductor (SC). We show, using an
Externí odkaz:
http://arxiv.org/abs/1707.07683
Publikováno v:
Phys. Rev. B 97, 075126 (2018)
Motivated by recent experiments on $\alpha$-RuCl$_3$, we investigate a possible quantum spin liquid ground state of the honeycomb-lattice spin model with bond-dependent interactions. We consider the $K-\Gamma$ model, where $K$ and $\Gamma$ represent
Externí odkaz:
http://arxiv.org/abs/1706.09908
Publikováno v:
Phys. Rev. B 96, 064527 (2017)
Previous studies have shown that bipartite Hubbard systems with inhomogeneous hopping amplitudes can exhibit higher pair-binding energies than the uniform model. Here we examine whether this result holds for systems with a more generic band structure
Externí odkaz:
http://arxiv.org/abs/1706.05023
Publikováno v:
Phys. Rev. Lett. 120, 086802 (2018)
Recent experiments have explored two-dimensional electron gases (2DEGs) at oxide (111) surfaces and interfaces, finding evidence for hexagonal symmetry breaking in SrTiO$_3$ at low temperature. We discuss many-body instabilities of such (111) 2DEGs,
Externí odkaz:
http://arxiv.org/abs/1705.10795
Publikováno v:
npj Quantum Materials, 3, Article number: 23, (2018)
The spin liquid phase is one of the prominent strongly interacting topological phases of matter whose unambiguous confirmation is yet to be reached despite intensive experimental efforts on numerous candidate materials. Recently, a new family of corr
Externí odkaz:
http://arxiv.org/abs/1701.07837
Autor:
Wachtel, Gideon, Kim, Yong Baek
Publikováno v:
Phys. Rev. B 94, 104522 (2016)
Motivated by the recent discovery of a new family of Chromium based superconductors, we consider a two-band model, where a band of electrons dispersing only in one direction interacts with a band of electrons dispersing in all three directions. Stron
Externí odkaz:
http://arxiv.org/abs/1607.04300
Publikováno v:
Phys. Rev. B 92, 224504 (2015)
Recent experiments show that charge-density-wave correlations are prevalent in underdoped cuprate superconductors. The correlations are short ranged at weak magnetic fields but their intensity and spatial extent increase rapidly at low temperatures b
Externí odkaz:
http://arxiv.org/abs/1502.07498
Autor:
Wachtel, Gideon, Orgad, Dror
Publikováno v:
Phys. Rev. B 91, 014503 (2015)
Experimental evidence for the existence of a fluctuating charge-density wave order in the pseudogap regime of YBa$_2$Cu$_3$O$_{6+x}$ has renewed interest in its interplay with superconductivity. Here, we consider the problem within a nonlinear sigma
Externí odkaz:
http://arxiv.org/abs/1410.4525