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It is known that, in a pure one-dimensional case, Charge-Density-Wave (CDW)phase is destroyed by a magnetic field, whereas Spin-Density-Wave (SDW) onedoes not feel the field. In reality, SDW phase is often observed inquasi-one-dimensional (Q1D) conductors due to the so-called "nesting" propertyof their electron spectra. We show that, in the latter case, a high magneticfield generates some "anti-nesting" term in a Q1D electron spectrum, whichdestroys SDW phase. We suggest to perform the corresponding experiments in SDWphases of the real Q1D organic conductors with chemical formula (TMTSF)$_2$X(X=PF$_6$, ClO$_4$, etc.).

Can a Magnetic Field Destroy a Spin-Density-Wave Phase in a Quasi-One-Dimensional Conductor?