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Logarithmic singularities and quantum oscillations in magnetically doped topological insulators
Debaleena Nandi, Inti Sodemann, Kevin Shain +9
We report magnetotransport measurements on magnetically doped (Bi,Sb)Te films grown by molecular beam epitaxy. In Hallbar devices, logarithmic dependence on temperature and…
Mixed-valence insulators with neutral Fermi surfaces
Debanjan Chowdhury, Inti Sodemann, T. Senthil
Samarium hexaboride is a classic three-dimensional mixed valence system with a high-temperature metallic phase that evolves into a paramagnetic charge insulator below 40 kelvin. A…
Anisotropy Driven Transition from Moore-Read State to Quantum Hall Stripes
Zheng Zhu, Inti Sodemann, D. N. Sheng +1
We investigate the nature of the quantum Hall liquid in a half-filled second Landau level () as a function of band mass anisotropy using numerical exact diagonalization (ED) a…
Quantum Hall ferroelectrics and nematics in multivalley systems
Inti Sodemann, Zheng Zhu, Liang Fu
We study broken symmetry states at integer Landau level fillings in multivalley quantum Hall systems whose low energy dispersions are anisotropic. When the Fermi surface of individ…