Huge First-Order Metamagnetic Transition in the Paramagnetic Heavy-Fermion System CeTiGe
We report on the observation of large, step-like anomalies in the magnetization (\(\Delta M = 0.74\)\,\(\mu_{\rm B}\)/Ce), in the magnetostriction (\(\Delta l/l_{0} = 2.0 \cdot 10^{-3}\)), and in the magnetoresistance in polycrystals of the paramagnetic heavy-fermion system CeTiGe at a critical magn...
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| creator | Deppe, Micha Lausberg, Stefan Weickert, Franziska Brando, Manuel Skourski, Yurii Caroca-Canales, Nubia Geibel, Chistoph Steglich, Frank |
| description | We report on the observation of large, step-like anomalies in the magnetization (\(\Delta M = 0.74\)\,\(\mu_{\rm B}\)/Ce), in the magnetostriction (\(\Delta l/l_{0} = 2.0 \cdot 10^{-3}\)), and in the magnetoresistance in polycrystals of the paramagnetic heavy-fermion system CeTiGe at a critical magnetic field \(\mu_0 H_c \approx \) 12.5\,T at low temperatures. The size of these anomalies is much larger than those reported for the prototypical heavy-fermion metamagnet CeRu\(_2\)Si\(_2\). Furthermore, hysteresis between increasing and decreasing field data indicate a real thermodynamic, first-order type of phase transition, in contrast to the crossover reported for CeRu\(_2\)Si\(_2\). Analysis of the resistivity data shows a pronounced decrease of the electronic quasiparticle mass across \(H_c\). These results establish CeTiGe as a new metamagnetic Kondo-lattice system, with an exceptionally large, metamagnetic transition of first-order type at a moderate field. |
| doi_str_mv | 10.48550/arxiv.1201.2347 |
| format | Article |
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The size of these anomalies is much larger than those reported for the prototypical heavy-fermion metamagnet CeRu\(_2\)Si\(_2\). Furthermore, hysteresis between increasing and decreasing field data indicate a real thermodynamic, first-order type of phase transition, in contrast to the crossover reported for CeRu\(_2\)Si\(_2\). Analysis of the resistivity data shows a pronounced decrease of the electronic quasiparticle mass across \(H_c\). 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The size of these anomalies is much larger than those reported for the prototypical heavy-fermion metamagnet CeRu\(_2\)Si\(_2\). Furthermore, hysteresis between increasing and decreasing field data indicate a real thermodynamic, first-order type of phase transition, in contrast to the crossover reported for CeRu\(_2\)Si\(_2\). Analysis of the resistivity data shows a pronounced decrease of the electronic quasiparticle mass across \(H_c\). These results establish CeTiGe as a new metamagnetic Kondo-lattice system, with an exceptionally large, metamagnetic transition of first-order type at a moderate field.</description><subject>Anomalies</subject><subject>Crossovers</subject><subject>Fermions</subject><subject>Magnetoresistance</subject><subject>Magnetoresistivity</subject><subject>Magnetostriction</subject><subject>Phase transitions</subject><subject>Physics - Strongly Correlated Electrons</subject><subject>Polycrystals</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GOX</sourceid><recordid>eNpFj8FLwzAUxoMgOObuniTguTN5Sdr0KMOtg8kEe_BW0vZ1Zth2Julw_72dEzx9D74fj-9HyB1nc6mVYo_GfdvjnAPjcxAyuSITEIJHWgLckJn3e8YYxAkoJSbkPRt2SJfW-RBtXY2OvmAwrdl1GGxFc2c6b4PtO2o7Gj6Qvhr3X2dojqdoia49E28nH7ClC8ztCm_JdWM-Pc7-ckry5XO-yKLNdrVePG0io7iMGqmxRqhRaSFZoppK1gy0GU3Gc9wtpCpVBalMdQmNSUuB2FQ6rnnMNDRiSu4vb3-ti4OzrXGn4mxfnO1H4OECHFz_NaAPxb4fXDdOKoDpmKcxT6T4AbzoXKM</recordid><startdate>20120111</startdate><enddate>20120111</enddate><creator>Deppe, Micha</creator><creator>Lausberg, Stefan</creator><creator>Weickert, Franziska</creator><creator>Brando, Manuel</creator><creator>Skourski, Yurii</creator><creator>Caroca-Canales, Nubia</creator><creator>Geibel, Chistoph</creator><creator>Steglich, Frank</creator><general>Cornell University Library, arXiv.org</general><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>GOX</scope></search><sort><creationdate>20120111</creationdate><title>Huge First-Order Metamagnetic Transition in the Paramagnetic Heavy-Fermion System CeTiGe</title><author>Deppe, Micha ; 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The size of these anomalies is much larger than those reported for the prototypical heavy-fermion metamagnet CeRu\(_2\)Si\(_2\). Furthermore, hysteresis between increasing and decreasing field data indicate a real thermodynamic, first-order type of phase transition, in contrast to the crossover reported for CeRu\(_2\)Si\(_2\). Analysis of the resistivity data shows a pronounced decrease of the electronic quasiparticle mass across \(H_c\). These results establish CeTiGe as a new metamagnetic Kondo-lattice system, with an exceptionally large, metamagnetic transition of first-order type at a moderate field.</abstract><cop>Ithaca</cop><pub>Cornell University Library, arXiv.org</pub><doi>10.48550/arxiv.1201.2347</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Anomalies Crossovers Fermions Magnetoresistance Magnetoresistivity Magnetostriction Phase transitions Physics - Strongly Correlated Electrons Polycrystals |
| title | Huge First-Order Metamagnetic Transition in the Paramagnetic Heavy-Fermion System CeTiGe |
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