Driving a Liquid Crystal Phase Transition Using a Photochromic Hydrazone

2018 ◽  
Vol 140 (42) ◽  
pp. 13623-13627 ◽  
Author(s):  
Mark J. Moran ◽  
Mitchell Magrini ◽  
David M. Walba ◽  
Ivan Aprahamian
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Crystal Phase ◽  
Liquid Crystal Phase ◽  
Crystal Phase Transition ◽  
Liquid Crystal Phase Transition

Evidence for a liquid crystal phase transition in two-dimensional electrons in high Landau levels

2002 ◽  
Vol 12 (9) ◽  
pp. 377-380
Author(s):  
K. B. Cooper ◽  
M. P. Lilly ◽  
J. P. Eisenstein ◽  
L. N. Pfeiffer ◽  
K. W. West
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Landau Levels ◽  
Crystal Phase ◽  
Two Dimensional ◽  
Liquid Crystal Phase ◽  
Stripe Phase ◽  
Stripe Order ◽  
Crystal Phase Transition ◽  
Liquid Crystal Phase Transition

Transport measurements of high-mohility two-dimensional electron systems at low temperatures have revealed a large resistance anisotropy around half-filling of excited Landau levels. These results have been attributed to electronic stripe-phase formation with spontaneously broken orientational symmetry. Mechanisms which are known to break the orientational symmetry include poorly-understood crystal structure effects and an in-plane magnetic field, $B_{||}$. Here we report that a large $B_{||}$ also causes the transport anisotropy to persist up to much higher temperatures. In this regime, we find that the anisotropic resistance scales sublinearly with $B_{||}/T$. These observations support the proposal that the transition from anisotropic to isotropic transport reflects a liquid crystal phase transition where local stripe order persists even in the isotropic regime.

In situObservation of Supercooled Liquid–Crystal Phase Transition in Glassy Ferroelectric LaBGeO5

2011 ◽  
Vol 50 (6R) ◽  
pp. 068002 ◽  
Author(s):  
Yoshihiro Takahashi ◽  
Tomomichi Yasuoka ◽  
Minoru Osada ◽  
Rie Ihara ◽  
Takumi Fujiwara
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Supercooled Liquid ◽  
Crystal Phase ◽  
Liquid Crystal Phase ◽  
Crystal Phase Transition ◽  
Liquid Crystal Phase Transition
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