000178251 001__ 178251
000178251 005__ 20180913061333.0
000178251 0247_ $$2doi$$a10.1103/PhysRevLett.108.217401
000178251 022__ $$a0031-9007
000178251 02470 $$2ISI$$a000304250000020
000178251 037__ $$aARTICLE
000178251 245__ $$aPhonon Energy Gaps in the Charged Incommensurate Planes of the Spin-Ladder Sr14Cu24O41 Compound by Raman and Infrared Spectroscopy
000178251 260__ $$bAmerican Physical Society$$c2012
000178251 269__ $$a2012
000178251 336__ $$aJournal Articles
000178251 520__ $$aThe terahertz (THz) excitations in the quantum spin-ladder system Sr14Cu24O41 have been determined along the c axis using THz time-domain, Raman, and infrared spectroscopy. Low-frequency infrared and Raman active modes are observed above and below the charge-ordering temperature T-co similar or equal to 200 K over a narrow interval similar or equal to 1-2 meV (similar or equal to 8-16 cm(-1)). A new infrared mode at similar or equal to 1 meV develops below similar or equal to 100 K. The temperature dependence of these modes shows that they are coupled to the charge-and spin-density-wave correlations in this system. These low-energy features are conjectured to originate in the gapped sliding motion of the chain and ladder subsystems, which are both incommensurate and charged.
000178251 6531_ $$aDynamics
000178251 6531_ $$aLattices
000178251 700__ $$aThorsmolle, V. K.
000178251 700__ $$aHomes, C. C.
000178251 700__ $$aGozar, A.
000178251 700__ $$aBlumberg, G.
000178251 700__ $$avan Mechelen, J. L. M.
000178251 700__ $$aKuzmenko, A. B.
000178251 700__ $$aVanishri, S.
000178251 700__ $$aMarin, C.
000178251 700__ $$aRonnow, H. M.
000178251 773__ $$j108$$q-$$tPhysical Review Letters
000178251 909C0 $$0252060$$pLPI$$xU10101
000178251 909CO $$ooai:infoscience.tind.io:178251$$pSB$$particle
000178251 917Z8 $$x176429
000178251 937__ $$aEPFL-ARTICLE-178251
000178251 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000178251 980__ $$aARTICLE