000189094 001__ 189094
000189094 005__ 20180913062045.0
000189094 0247_ $$2doi$$a10.1103/PhysRevB.87.195119
000189094 022__ $$a1098-0121
000189094 02470 $$2ISI$$a000319115500001
000189094 037__ $$aARTICLE
000189094 245__ $$aDoping dependence of the plasmon dispersion in 2H-TaSe2
000189094 260__ $$aCollege Pk$$bAmer Physical Soc$$c2013
000189094 269__ $$a2013
000189094 300__ $$a5
000189094 336__ $$aJournal Articles
000189094 520__ $$aInelastic electron scattering is applied to investigate the impact of potassium intercalation on the charge-carrier plasmon energy and dispersion in the charge- density wave (CDW) bearing compound 2H-TaSe2. We observe an unususal doping dependence of the plasmon dispersion, which even changes sign on alkali addition. In contrast to the continous energy shift of the plasmon position on doping at lowest momentum transfer, its dispersion changes in a rather discontinuous manner. We argue that the observed dynamics can be explained only in a picture, where complex phenomena are taken into account, including the suppression of the CDW on doping as well as the interplay of the CDW and the plasma resonance.
000189094 700__ $$aKoenig, A.$$uIFW Dresden, Inst Solid State Res, D-01171 Dresden, Germany
000189094 700__ $$aSchuster, R.$$uIFW Dresden, Inst Solid State Res, D-01171 Dresden, Germany
000189094 700__ $$aKnupfer, M.$$uIFW Dresden, Inst Solid State Res, D-01171 Dresden, Germany
000189094 700__ $$aBuechner, B.$$uIFW Dresden, Inst Solid State Res, D-01171 Dresden, Germany
000189094 700__ $$0240360$$aBerger, H.$$g104502
000189094 773__ $$j87$$k19$$tPhysical Review B
000189094 909C0 $$0252170$$pLSE$$xU10153
000189094 909CO $$ooai:infoscience.tind.io:189094$$pSB$$particle
000189094 917Z8 $$x107920
000189094 937__ $$aEPFL-ARTICLE-189094
000189094 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000189094 980__ $$aARTICLE