Abstract
We report the investigation of charge density waves (CDW's) in Lu 2Ir3Si5 by electron diffraction and dark-field imaging in transmission electron microscopy using superlattice diffraction spots. The CDW state is confirmed by the presence of superlattice reflections. Most interestingly, the CDW state at low temperatures is found to be electronically phase separated, with the coexistence of CDW domains and low-temperature normal phase domains. With a change in temperature, unlike other typical incommensurate CDW systems in which commensurability varies with temperature, we find that commensurability remains unchanged in the present case and that the predominant change is in the redistribution of the area ratio of the two coexisting phases, which is clearly revealed in the dark-field images obtained from the CDW superlattice reflections. The electronic phase separation in the CDW state of Lu2Ir3Si5 is unprecedented in CDW systems, and its temperature dependence is also anomalous.
| Original language | English |
|---|---|
| Article number | 155121 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 83 |
| Issue number | 15 |
| DOIs | |
| Publication status | Published - 2011 Apr 26 |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Electronically phase-separated charge-density waves in Lu 2Ir3Si5. / Lee, M. H.; Chen, C. H.; Chu, M. W.; Lue, C. S.; Kuo, Y. K.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 83, No. 15, 155121, 26.04.2011.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Electronically phase-separated charge-density waves in Lu 2Ir3Si5
AU - Lee, M. H.
AU - Chen, C. H.
AU - Chu, M. W.
AU - Lue, C. S.
AU - Kuo, Y. K.
PY - 2011/4/26
Y1 - 2011/4/26
N2 - We report the investigation of charge density waves (CDW's) in Lu 2Ir3Si5 by electron diffraction and dark-field imaging in transmission electron microscopy using superlattice diffraction spots. The CDW state is confirmed by the presence of superlattice reflections. Most interestingly, the CDW state at low temperatures is found to be electronically phase separated, with the coexistence of CDW domains and low-temperature normal phase domains. With a change in temperature, unlike other typical incommensurate CDW systems in which commensurability varies with temperature, we find that commensurability remains unchanged in the present case and that the predominant change is in the redistribution of the area ratio of the two coexisting phases, which is clearly revealed in the dark-field images obtained from the CDW superlattice reflections. The electronic phase separation in the CDW state of Lu2Ir3Si5 is unprecedented in CDW systems, and its temperature dependence is also anomalous.
AB - We report the investigation of charge density waves (CDW's) in Lu 2Ir3Si5 by electron diffraction and dark-field imaging in transmission electron microscopy using superlattice diffraction spots. The CDW state is confirmed by the presence of superlattice reflections. Most interestingly, the CDW state at low temperatures is found to be electronically phase separated, with the coexistence of CDW domains and low-temperature normal phase domains. With a change in temperature, unlike other typical incommensurate CDW systems in which commensurability varies with temperature, we find that commensurability remains unchanged in the present case and that the predominant change is in the redistribution of the area ratio of the two coexisting phases, which is clearly revealed in the dark-field images obtained from the CDW superlattice reflections. The electronic phase separation in the CDW state of Lu2Ir3Si5 is unprecedented in CDW systems, and its temperature dependence is also anomalous.
UR - http://www.scopus.com/inward/record.url?scp=79961119397&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79961119397&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.83.155121
DO - 10.1103/PhysRevB.83.155121
M3 - Article
AN - SCOPUS:79961119397
VL - 83
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 1098-0121
IS - 15
M1 - 155121
ER -