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We show that a normal (single particle) current density $J_x$ {\emtransverse} to the ordering wavevector $2k_F{\bf\hat{z}}$ of a charge densitywave (CDW) has dramatic effects both above and {\em below} the CDW depinningtransition. It exponentially (in $J_x$) enhances CDW correlations, andexponentially suppresses the longitudinal depinning field. The intermediatelongitudinal I-V relation also changes, acquiring a {\em linear} regime. Wepropose a novel ``current effect transistor'' whose CDW channel is turned on bya transverse current. Our results also have important implications for therecently proposed ``striped phase'' of the high-T$_c$ superconductors.Comment: change of title and minor corrections, 4 RevTeX pgs, to appear in  Phys. Rev. Lett., 81, 3711 (1998

physical review letters

Transversely Driven Charge-Density Waves and Striped Phases of High-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="italic">T</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="italic">c</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>Superconductors: The Current-Effect Transistor

Transversely Driven Charge-Density Waves and Striped Phases of High-TcSuperconductors: The Current-Effect Transistor