Investigation of the physical properties of the Ce2MAl7Ge4 (M = Co, Ir, Ni, Pd) heavy fermion compounds
We report the synthesis, crystal structure and characterization by means of single crystal x-ray diffraction, neutron powder diffraction, magnetic, thermal and transport measurements of the new heavy fermion compounds Ce\(_{2}\)MAl\(_{7}\)Ge\(_{4}\) (M = Co, Ir, Ni, Pd). These compounds crystallize...
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| creator | Ghimire, Nirmal J Cary, S K Eley, S Wakeham, N A Rosa, P F S Albrecht-Schmitt, T Lee, Y Janoschek, M Brown, C M Civile, L Thompson, J D Ronning, F Bauer, E D |
| description | We report the synthesis, crystal structure and characterization by means of single crystal x-ray diffraction, neutron powder diffraction, magnetic, thermal and transport measurements of the new heavy fermion compounds Ce\(_{2}\)MAl\(_{7}\)Ge\(_{4}\) (M = Co, Ir, Ni, Pd). These compounds crystallize in a noncentrosymmetic tetragonal space group P\={4}2\(_{1}\)m, consisting of layers of square nets of Ce atoms separated by Ge-Al and M-Al-Ge blocks. Ce\(_{2}\)CoAl\(_{7}\)Ge\(_{4}\), Ce\(_{2}\)IrAl\(_{7}\)Ge\(_{4}\) and Ce\(_{2}\)NiAl\(_{7}\)Ge\(_{4}\) order magnetically behavior below \(T_{M}=\) 1.8, 1.6, and 0.8 K, respectively. There is no evidence of magnetic ordering in Ce\(_{2}\)PdAl\(_{7}\)Ge\(_{4}\) down to 0.4 K. The small amount of entropy released in the magnetic state of Ce\(_{2}\)MAl\(_{7}\)Ge\(_{4}\) (M = Co, Ir, Ni) and the reduced specific heat jump at \(T_M\) suggest a strong Kondo interaction in these materials. Ce\(_{2}\)PdAl\(_{7}\)Ge\(_{4}\) shows non-Fermi liquid behavior, possibly due to the presence of a nearby quantum critical point. |
| doi_str_mv | 10.48550/arxiv.1604.07927 |
| format | Article |
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These compounds crystallize in a noncentrosymmetic tetragonal space group P\={4}2\(_{1}\)m, consisting of layers of square nets of Ce atoms separated by Ge-Al and M-Al-Ge blocks. Ce\(_{2}\)CoAl\(_{7}\)Ge\(_{4}\), Ce\(_{2}\)IrAl\(_{7}\)Ge\(_{4}\) and Ce\(_{2}\)NiAl\(_{7}\)Ge\(_{4}\) order magnetically behavior below \(T_{M}=\) 1.8, 1.6, and 0.8 K, respectively. There is no evidence of magnetic ordering in Ce\(_{2}\)PdAl\(_{7}\)Ge\(_{4}\) down to 0.4 K. The small amount of entropy released in the magnetic state of Ce\(_{2}\)MAl\(_{7}\)Ge\(_{4}\) (M = Co, Ir, Ni) and the reduced specific heat jump at \(T_M\) suggest a strong Kondo interaction in these materials. Ce\(_{2}\)PdAl\(_{7}\)Ge\(_{4}\) shows non-Fermi liquid behavior, possibly due to the presence of a nearby quantum critical point.</description><identifier>EISSN: 2331-8422</identifier><identifier>DOI: 10.48550/arxiv.1604.07927</identifier><language>eng</language><publisher>Ithaca: Cornell University Library, arXiv.org</publisher><subject>Cobalt ; Critical point ; Crystal structure ; Diffraction ; Fermi liquids ; Fermions ; Nickel aluminides ; Nickel base alloys ; Nickel compounds ; Physical properties ; Physics - Strongly Correlated Electrons ; Single crystals ; Structural analysis ; X-ray diffraction</subject><ispartof>arXiv.org, 2016-04</ispartof><rights>2016. This work is published under http://arxiv.org/licenses/nonexclusive-distrib/1.0/ (the “License”). 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These compounds crystallize in a noncentrosymmetic tetragonal space group P\={4}2\(_{1}\)m, consisting of layers of square nets of Ce atoms separated by Ge-Al and M-Al-Ge blocks. Ce\(_{2}\)CoAl\(_{7}\)Ge\(_{4}\), Ce\(_{2}\)IrAl\(_{7}\)Ge\(_{4}\) and Ce\(_{2}\)NiAl\(_{7}\)Ge\(_{4}\) order magnetically behavior below \(T_{M}=\) 1.8, 1.6, and 0.8 K, respectively. There is no evidence of magnetic ordering in Ce\(_{2}\)PdAl\(_{7}\)Ge\(_{4}\) down to 0.4 K. The small amount of entropy released in the magnetic state of Ce\(_{2}\)MAl\(_{7}\)Ge\(_{4}\) (M = Co, Ir, Ni) and the reduced specific heat jump at \(T_M\) suggest a strong Kondo interaction in these materials. Ce\(_{2}\)PdAl\(_{7}\)Ge\(_{4}\) shows non-Fermi liquid behavior, possibly due to the presence of a nearby quantum critical point.</description><subject>Cobalt</subject><subject>Critical point</subject><subject>Crystal structure</subject><subject>Diffraction</subject><subject>Fermi liquids</subject><subject>Fermions</subject><subject>Nickel aluminides</subject><subject>Nickel base alloys</subject><subject>Nickel compounds</subject><subject>Physical properties</subject><subject>Physics - Strongly Correlated Electrons</subject><subject>Single crystals</subject><subject>Structural analysis</subject><subject>X-ray diffraction</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><sourceid>GOX</sourceid><recordid>eNo1kE1PAjEYhBsTEwnyAzzZxIsmLHbffu7BA9kokoCa6H1Ttl0oge3aLkT-vQvoaQ4zmcw8CN2kZMQU5-RRhx-3H6WCsBGRGcgL1ANK00QxgCs0iHFNCAEhgXPaQ8tpvbexdUvdOl9jX-F2ZXGzOkRX6g1ugm9saJ2N_1ZuYT7eyIll-H6On3Duh3gahvjNDfGHecArq_cHXNmwPfaVftv4XW3iNbqs9CbawZ_20efL81f-mszeJ9N8PEs0B5aAAS2oFJISAcxIBkRyzbIyNUouOLUEZEUgU8JQSmTFFwulRGlsmVlRMdpHt-fWE4SiCW6rw6E4wihOMLrE3TnRPfvedc-Ltd-FuptUAFEdGMopo78S7l71</recordid><startdate>20160427</startdate><enddate>20160427</enddate><creator>Ghimire, Nirmal J</creator><creator>Cary, S K</creator><creator>Eley, S</creator><creator>Wakeham, N A</creator><creator>Rosa, P F S</creator><creator>Albrecht-Schmitt, T</creator><creator>Lee, Y</creator><creator>Janoschek, M</creator><creator>Brown, C M</creator><creator>Civile, L</creator><creator>Thompson, J D</creator><creator>Ronning, F</creator><creator>Bauer, E D</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>PHGZM</scope><scope>PHGZT</scope><scope>PIMPY</scope><scope>PKEHL</scope><scope>PQEST</scope><scope>PQGLB</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>GOX</scope></search><sort><creationdate>20160427</creationdate><title>Investigation of the physical properties of the Ce2MAl7Ge4 (M = Co, Ir, Ni, Pd) heavy fermion compounds</title><author>Ghimire, Nirmal J ; Cary, S K ; Eley, S ; Wakeham, N A ; Rosa, P F S ; Albrecht-Schmitt, T ; Lee, Y ; Janoschek, M ; Brown, C M ; Civile, L ; Thompson, J D ; Ronning, F ; Bauer, E D</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a524-2d2a6376730624d742075a49c1d87b53e027f02986d3307f5bb886cdec9e6f43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Cobalt</topic><topic>Critical point</topic><topic>Crystal structure</topic><topic>Diffraction</topic><topic>Fermi liquids</topic><topic>Fermions</topic><topic>Nickel aluminides</topic><topic>Nickel base alloys</topic><topic>Nickel compounds</topic><topic>Physical properties</topic><topic>Physics - Strongly Correlated Electrons</topic><topic>Single crystals</topic><topic>Structural analysis</topic><topic>X-ray diffraction</topic><toplevel>online_resources</toplevel><creatorcontrib>Ghimire, Nirmal J</creatorcontrib><creatorcontrib>Cary, S K</creatorcontrib><creatorcontrib>Eley, S</creatorcontrib><creatorcontrib>Wakeham, N A</creatorcontrib><creatorcontrib>Rosa, P F S</creatorcontrib><creatorcontrib>Albrecht-Schmitt, T</creatorcontrib><creatorcontrib>Lee, Y</creatorcontrib><creatorcontrib>Janoschek, M</creatorcontrib><creatorcontrib>Brown, C M</creatorcontrib><creatorcontrib>Civile, L</creatorcontrib><creatorcontrib>Thompson, J D</creatorcontrib><creatorcontrib>Ronning, F</creatorcontrib><creatorcontrib>Bauer, E D</creatorcontrib><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>ProQuest Central (New)</collection><collection>ProQuest One Academic (New)</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Middle East (New)</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Applied & Life Sciences</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><collection>arXiv.org</collection><jtitle>arXiv.org</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ghimire, Nirmal J</au><au>Cary, S K</au><au>Eley, S</au><au>Wakeham, N A</au><au>Rosa, P F S</au><au>Albrecht-Schmitt, T</au><au>Lee, Y</au><au>Janoschek, M</au><au>Brown, C M</au><au>Civile, L</au><au>Thompson, J D</au><au>Ronning, F</au><au>Bauer, E D</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Investigation of the physical properties of the Ce2MAl7Ge4 (M = Co, Ir, Ni, Pd) heavy fermion compounds</atitle><jtitle>arXiv.org</jtitle><date>2016-04-27</date><risdate>2016</risdate><eissn>2331-8422</eissn><abstract>We report the synthesis, crystal structure and characterization by means of single crystal x-ray diffraction, neutron powder diffraction, magnetic, thermal and transport measurements of the new heavy fermion compounds Ce\(_{2}\)MAl\(_{7}\)Ge\(_{4}\) (M = Co, Ir, Ni, Pd). These compounds crystallize in a noncentrosymmetic tetragonal space group P\={4}2\(_{1}\)m, consisting of layers of square nets of Ce atoms separated by Ge-Al and M-Al-Ge blocks. Ce\(_{2}\)CoAl\(_{7}\)Ge\(_{4}\), Ce\(_{2}\)IrAl\(_{7}\)Ge\(_{4}\) and Ce\(_{2}\)NiAl\(_{7}\)Ge\(_{4}\) order magnetically behavior below \(T_{M}=\) 1.8, 1.6, and 0.8 K, respectively. There is no evidence of magnetic ordering in Ce\(_{2}\)PdAl\(_{7}\)Ge\(_{4}\) down to 0.4 K. The small amount of entropy released in the magnetic state of Ce\(_{2}\)MAl\(_{7}\)Ge\(_{4}\) (M = Co, Ir, Ni) and the reduced specific heat jump at \(T_M\) suggest a strong Kondo interaction in these materials. Ce\(_{2}\)PdAl\(_{7}\)Ge\(_{4}\) shows non-Fermi liquid behavior, possibly due to the presence of a nearby quantum critical point.</abstract><cop>Ithaca</cop><pub>Cornell University Library, arXiv.org</pub><doi>10.48550/arxiv.1604.07927</doi><oa>free_for_read</oa></addata></record> |
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| subjects | Cobalt Critical point Crystal structure Diffraction Fermi liquids Fermions Nickel aluminides Nickel base alloys Nickel compounds Physical properties Physics - Strongly Correlated Electrons Single crystals Structural analysis X-ray diffraction |
| title | Investigation of the physical properties of the Ce2MAl7Ge4 (M = Co, Ir, Ni, Pd) heavy fermion compounds |
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