TY - JOUR
T1 - Spectroscopic study of stripe pattern formation induced by current injection in a charge-transfer complex
AU - Okimoto, Y.
AU - Kumai, R.
AU - Saitoh, E.
AU - Izumi, M.
AU - Horiuchi, S.
AU - Tokura, Y.
PY - 2004/9
Y1 - 2004/9
N2 - A stripe pattern with a spacing of a few micrometers is observed to show up on the crystal surface of a potassium 7,7′,8,8′- tetracyanoquinodimethane (K-TCNQ) upon the current-induced local insulator-metal transition. The spatially resolved reflectivity and Raman spectroscopies have shown that the stripe is a consequence of periodic phase separation with alternate dimerized and less-dimerized domains in the TCNQ stacks. The periodic modulation of the electronic state is generated in order to minimize the energy of the lattice strain, arising from the current-induced relaxation of the Peierls distortion.
AB - A stripe pattern with a spacing of a few micrometers is observed to show up on the crystal surface of a potassium 7,7′,8,8′- tetracyanoquinodimethane (K-TCNQ) upon the current-induced local insulator-metal transition. The spatially resolved reflectivity and Raman spectroscopies have shown that the stripe is a consequence of periodic phase separation with alternate dimerized and less-dimerized domains in the TCNQ stacks. The periodic modulation of the electronic state is generated in order to minimize the energy of the lattice strain, arising from the current-induced relaxation of the Peierls distortion.
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U2 - 10.1103/PhysRevB.70.115104
DO - 10.1103/PhysRevB.70.115104
M3 - Article
AN - SCOPUS:19744381360
VL - 70
SP - 115104-1-115104-6
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 0163-1829
IS - 11
M1 - 115104
ER -