Quantum spin liquids and the metal-insulator transition in doped semiconductors
arXiv:1204.1342 · doi:10.1103/PhysRevLett.109.077205
Abstract
We describe a new possible route to the metal-insulator transition in doped semiconductors such as Si:P or Si:B. We explore the possibility that the loss of metallic transport occurs through Mott localization of electrons into a quantum spin liquid state with diffusive charge neutral "spinon" excitations. Such a quantum spin liquid state can appear as an intermediate phase between the metal and the Anderson-Mott insulator. An immediate testable consequence is the presence of metallic thermal conductivity at low temperature in the electrical insulator near the metal-insulator transition. Further we show that though the transition is second order the zero temperature residual electrical conductivity will jump as the transition is approached from the metallic side. However the electrical conductivity will have a non-monotonic temperature dependence that may complicate the extrapolation to zero temperature. Signatures in other experiments and some comparisons with existing data are made.
arXiv comment4 pages text + 3 pages Appendices, 3 Figures; v2 - References Added
References in corpus (18)
- Spin Liquid State in an Organic Mott Insulator with Triangular Lattice
- Spin-Liquid State in the S = 1/2 Hyperkagome Antiferromagnet Na4Ir3O8
- U(1) Gauge Theory of the Hubbard Model : Spin Liquid States and Possible Application to k-(BEDT-TTF)_2 Cu_2 (CN)_3
- Quantum phase transitions of metals in two spatial dimensions: I. Ising-nematic order
- Low energy effective theory of Fermi surface coupled with U(1) gauge field in 2+1 dimensions
- On the low energy properies of fermions with singular interactions
- On the stability of U(1) spin liquids in two dimensions
- Slave-rotor mean field theories of strongly correlated systems and the Mott transition in finite dimensions
- Non-Fermi Liquid Fixed Point in 2+1 Dimensions
- Low Energy Dynamics of the Spinon-Gauge System
- Theory of a continuous Mott transition in two dimensions
- Renormalization Group Approach to Low Temperature Properties of a Non-Fermi Liquid Metal
- Mott transition between a spin-liquid insulator and a metal in three dimensions
- Interaction corrections to the thermal transport coefficients in disordered metals: quantum kinetic equation approach
- Power-law Conductivity inside the Mott gap: application to
- Multiparticle ring exchange in the Wigner glass and its possible relevance to strongly interacting two-dimensional electron systems in the presence of disorder
- Electron-electron interaction corrections to the thermal conductivity in disordered conductors
- Role of disorder in the Mott-Hubbard transition
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- Many-Body Localization Transition in Random Quantum Spin Chains with Long-Range Interactions
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