%0 Journal Article %1 PhysRevLett.125.206602 %A Danu, Bimla %A Vojta, Matthias %A Assaad, Fakher F. %A Grover, Tarun %D 2020 %I American Physical Society %J Phys. Rev. Lett. %K b %N 20 %P 206602 %R 10.1103/PhysRevLett.125.206602 %T Kondo breakdown in a spin-$\dfrac12$ chain of adatoms on a Dirac semimetal %U https://link.aps.org/doi/10.1103/PhysRevLett.125.206602 %V 125 %X We consider a spin-1/2 Heisenberg chain coupled via a Kondo interaction to two-dimensional Dirac fermions. The Kondo interaction is irrelevant at the decoupled fixed point, leading to the existence of a Kondo-breakdown phase and a Kondo-breakdown critical point separating such a phase from a heavy Fermi liquid. We reach this conclusion on the basis of a renormalization group analysis, large-N calculations as well as extensive auxiliary-field quantum Monte Carlo simulations. We extract quantities such as the zero-bias tunneling conductance which will be relevant to future experiments involving adatoms on semimetals such as graphen

@article{PhysRevLett.125.206602, abstract = {We consider a spin-1/2 Heisenberg chain coupled via a Kondo interaction to two-dimensional Dirac fermions. The Kondo interaction is irrelevant at the decoupled fixed point, leading to the existence of a Kondo-breakdown phase and a Kondo-breakdown critical point separating such a phase from a heavy Fermi liquid. We reach this conclusion on the basis of a renormalization group analysis, large-N calculations as well as extensive auxiliary-field quantum Monte Carlo simulations. We extract quantities such as the zero-bias tunneling conductance which will be relevant to future experiments involving adatoms on semimetals such as graphen}, added-at = {2021-04-20T11:22:00.000+0200}, author = {Danu, Bimla and Vojta, Matthias and Assaad, Fakher F. and Grover, Tarun}, biburl = {https://www.bibsonomy.org/bibtex/20149e1f04fa98c5862cc8d423deac5f7/ctqmat}, day = 13, description = {Phys. Rev. Lett. 125, 206602 (2020) - Kondo Breakdown in a Spin-$1/2$ Chain of Adatoms on a Dirac Semimetal}, doi = {10.1103/PhysRevLett.125.206602}, interhash = {5c78ff9b44e174332c2c42c780c5e9ab}, intrahash = {0149e1f04fa98c5862cc8d423deac5f7}, journal = {Phys. Rev. Lett.}, keywords = {b}, month = {11}, number = 20, numpages = {6}, pages = 206602, publisher = {American Physical Society}, timestamp = {2023-10-19T13:26:19.000+0200}, title = {Kondo breakdown in a spin-$\mathbf{\dfrac{1}{2}}$ chain of adatoms on a Dirac semimetal}, url = {https://link.aps.org/doi/10.1103/PhysRevLett.125.206602}, volume = 125, year = 2020 }