000199030 001__ 199030
000199030 005__ 20181203023510.0
000199030 0247_ $$2doi$$a10.1103/PhysRevB.89.144416
000199030 022__ $$a1098-0121
000199030 02470 $$2ISI$$a000335230100003
000199030 037__ $$aARTICLE
000199030 245__ $$aMagnetic entropy landscape and Gruneisen parameter of a quantum spin ladder
000199030 260__ $$bAmerican Physical Society$$c2014$$aCollege Pk
000199030 269__ $$a2014
000199030 300__ $$a5
000199030 336__ $$aJournal Articles
000199030 520__ $$aWe present measurements of the magnetic entropy landscape and Gruneisen parameter of the Cu2+ complex (C5H12N)(2)CuCl4 in a magnetic field. Our thermodynamic measurements are in very good agreement with a theoretical description by a S = 1/2 Heisenberg ladder model. Due to its excellent experimental access, the compound crosses two quantum critical points in the applied range of the magnetic field, first from a gapped unpolarized state to a critical phase and then to a gapped fully polarized state. This behavior is reflected directly in the magnetic entropy map. Due to the remarkable properties of the magnetic Gruneisen parameter, we are able to discuss the validity of critical behavior with respect to temperature and magnetic field for this model quasi-one-dimensional system.
000199030 700__ $$uHelmholtz Ctr Berlin Mat & Energy, D-14109 Berlin, Germany$$aRyll, H.
000199030 700__ $$uHelmholtz Ctr Berlin Mat & Energy, D-14109 Berlin, Germany$$aKiefer, K.
000199030 700__ $$uPaul Scherrer Inst, Neutron Scattering Lab, CH-5232 Villigen, Switzerland$$aRueegg, Ch.
000199030 700__ $$uPaul Scherrer Inst, Neutron Scattering Lab, CH-5232 Villigen, Switzerland$$aWard, S.
000199030 700__ $$uUniv Bern, Dept Chem & Biochem, CH-3012 Bern, Switzerland$$aKraemer, K. W.
000199030 700__ $$uUniv Bern, Dept Chem & Biochem, CH-3012 Bern, Switzerland$$aBiner, D.
000199030 700__ $$uUniv Hosp Geneva, Intervent Neuroradiol Unit, Dept Med Imaging & Informat Sci, CH-1211 Geneva, Switzerland$$aBouillot, P.
000199030 700__ $$uUniv Geneva, MaNEP, Dept Phys Mat Condensee, CH-1211 Geneva, Switzerland$$aCoira, E.
000199030 700__ $$uUniv Geneva, MaNEP, Dept Phys Mat Condensee, CH-1211 Geneva, Switzerland$$aGiamarchi, T.
000199030 700__ $$aKollath, C.
000199030 773__ $$j89$$tPhysical Review B$$k14
000199030 909C0 $$xU10309$$0252135$$pLMH
000199030 909CO $$pSTI$$particle$$ooai:infoscience.tind.io:199030
000199030 917Z8 $$x104417
000199030 937__ $$aEPFL-ARTICLE-199030
000199030 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000199030 980__ $$aARTICLE