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C. Geibel
Max Planck Society
595Publications
43H-index
8,012Citations
Publications 603
Newest
#1V. F. CorreaH-Index: 4
Last.C. Geibel (MPG: Max Planck Society)H-Index: 43
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#1U. StockertH-Index: 6
#2C. KlingnerH-Index: 8
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We present thermopower measurements on Yb(\(\hbox {Rh}_{1-x}\hbox {Co}_x\))\(_2\hbox {Si}_2\). Upon cobalt substitution, the Kondo temperature is decreasing and the single large thermopower minimum observed for \(\hbox {YbRh}_2\hbox {Si}_2\) splits into two minima. Simultaneously, the absolute thermopower values are strongly reduced due to a weaker exchange coupling between the 4f and the conduction electron states with increasing x. Pure \(\hbox {YbCo}_2\hbox {Si}_2\) is considered a stable tri...
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#1U. StockertH-Index: 6
#2C. KlingnerH-Index: 8
Last.Frank SteglichH-Index: 2
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#1Daniel Hafner (MPG: Max Planck Society)H-Index: 4
#2Binod K. RaiH-Index: 8
Last.Manuel Brando (MPG: Max Planck Society)H-Index: 17
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#1U. StockertH-Index: 6
#2C. KlingnerH-Index: 8
Last.Frank Steglich (CAS: Chinese Academy of Sciences)H-Index: 2
view all 6 authors...
We present thermopower measurements on Yb(\(\hbox {Rh}_{1-x}\hbox {Co}_x\))\(_2\hbox {Si}_2\). Upon cobalt substitution, the Kondo temperature is decreasing and the single large thermopower minimum observed for \(\hbox {YbRh}_2\hbox {Si}_2\) splits into two minima. Simultaneously, the absolute thermopower values are strongly reduced due to a weaker exchange coupling between the 4f and the conduction electron states with increasing x. Pure \(\hbox {YbCo}_2\hbox {Si}_2\) is considered a stable tri...
Source
#1U. Stockert (MPG: Max Planck Society)H-Index: 6
#2C. Klingner (MPG: Max Planck Society)H-Index: 8
Last.Frank Steglich (MPG: Max Planck Society)H-Index: 60
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A very strong magnetoelastic effect in the CeCo_{1-x}e_{x}i alloys is reported. The strength of the magnetostrictive effect can be tuned upon changing x The moderate low-temperature linear magnetostriction observed at low Fe concentrations becomes very large (\frac {\Delta L}{L} \left(16 T,2 K\right) =3\times0^{-3} around the critical concentration (x_c \approx0.23) at which the long-range antiferromagnetic order vanishes. Upon increasing doping through the non-magnetic regi...
#1Sandra Hamann (MPG: Max Planck Society)H-Index: 2
#2Jie Zhang (MPG: Max Planck Society)H-Index: 43
Last.Manuel Brando (MPG: Max Planck Society)H-Index: 17
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Yb(Rh1-xCox)2Si2 is a model system to address two challenging problems in the field of strongly correlated electron systems: The first is the intriguing competition between ferromagnetic (FM) and antiferromagnetic (AFM) order when approaching a magnetic quantum critical point (QCP). The second is the occurrence of magnetic order along a very hard crystalline electric field (CEF) direction, i.e. along the one with the smallest available magnetic moment. Here, we present a detailed study of the ev...
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#1J. KlotzH-Index: 1
#2K. GötzeH-Index: 2
Last.Helge Rosner (MPG: Max Planck Society)H-Index: 39
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1 CitationsSource
#1Silvia Seiro (MPG: Max Planck Society)H-Index: 11
#2Lin Jiao (MPG: Max Planck Society)H-Index: 13
Last.Steffen Wirth (MPG: Max Planck Society)H-Index: 18
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Strong electron correlations can give rise to extraordinary properties of metals with renormalized Landau quasiparticles. Near a quantum critical point, these quasiparticles can be destroyed and non-Fermi liquid behavior ensues. YbRh2Si2 is a prototypical correlated metal exhibiting the formation of quasiparticle and Kondo lattice coherence, as well as quasiparticle destruction at a field-induced quantum critical point. Here we show how, upon lowering the temperature, Kondo lattice coherence dev...
1 CitationsSource
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