Magnetic-Field-Induced Insulating Phases at Largers
نویسندگان
چکیده
منابع مشابه
Field induced spin density wave phases in (TMTSF)2ClO4 at high magnetic field
We propose a model to study the spin density wave (SDW) phases under a high magnetic field in the relaxed (TMTSF)2ClO4 salt where the ClO4 anions undergoe an orientational ordering transition. This opens a gap at the original Fermi surface and leads to a two band energy spectrum. We show that, in the high field regime, a competition takes place between the interband and the intraband SDW order ...
متن کاملInsulating phases of electrons on a zigzag strip in the orbital magnetic field
We consider electrons on a two-leg triangular ladder at half filling and in an orbital magnetic field. In a two-band regime in the absence of the field, the electronic system remains conducting for weak interactions since there is no four-fermion umklapp term. We find that in the presence of the orbital field there is a four-fermion umklapp and it is always relevant for repulsive interactions. ...
متن کاملParahydrogen-induced polarization at zero magnetic field.
We use symmetry arguments and simple model systems to describe the conversion of the singlet state of parahydrogen into an oscillating sample magnetization at zero magnetic field. During an initial period of free evolution governed by the scalar-coupling Hamiltonian HJ, the singlet state is converted into scalar spin order involving spins throughout the molecule. A short dc pulse along the z ax...
متن کاملMagnetic-field-induced crossover from Mott variable-range hopping to weakly insulating behavior.
There is considerable current interest in the magnetotransport of insulators that exhibit variable-range-hopping conductivity. Interesting, complex behavior has been found as a function of magnetic field. A substantial initial decrease in resistance, which saturates at fields around 2 or 3 T, has been attributed to quantum interference effects. A second and apparently distinct decrease or minim...
متن کاملUniversal scaling at field-induced magnetic phase transitions
We study field-induced magnetic order in cubic lattices of dimers with antiferromagnetic Heisenberg interactions. The thermal critical exponents at the quantum phase transition from a spin liquid to a magnetically ordered phase are determined from stochastic series expansion quantum Monte Carlo simulations. These exponents are independent of the interdimer coupling ratios, and converge to the v...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2005
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.94.226802