The critical point in an antiferromagnetic superconductor |
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| Affiliation: | 1. Federal Research Centre Southern Scientific Centre of the Russian Academy of Sciences, Rostov-on-Don, 344006 Russia;2. Platov South-Russian State Polytechnic University (NPI), Novocherkassk, 346400 Russia;3. North-Caucasus Federal University, Stavropol, 355009 Russia;1. National Institute of Technology Patna, Ashok Rajpath, Patna, Bihar 800005, India;2. Indian Institute of Technology, Kanpur, UP 208016, India;3. Indira Gandhi Institute of Technology, Sarang, Dhenkanal, Odisha 759146, India;4. UGC DAE CSR Kalpakkam Node, Kokilamedu, Tamil Nadu 603104, India |
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| Abstract: | We study the stability criterion for the critical point of a transition of the second kind in the T-HQ plane of an antiferromagnetic superconductor AFS (T is temperature and HQ is the staggered molecular field). The AFS is described by using the mean-field model given by Nass, Levin and Grest and we assume a one dimensional electron band. Some properties of the system near the critical point are also investigated. |
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