Change of Fermi Surface Topology in CeRu2Si2 Studied by LSDA+U Method
نویسندگان
چکیده
منابع مشابه
Transport signatures of Fermi surface topology change in BiTeI
Linda Ye,1,* Joseph G. Checkelsky,2 Fumitaka Kagawa,3 and Yoshinori Tokura1,3 1Department of Applied Physics, University of Tokyo, Tokyo 113-8656, Japan 2Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA 3RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan (Received 1 January 2015; revised manuscript received 13 April 20...
متن کاملFermi surface of y-tin studied by positron 2D-ACAR
We present the electron-position momentum distribution measured in single crystals of 7-tin (Sno.~Ino. 2) by 2D angular correlation of positron annihilation radiation. The Fermi sphere and its Umklapp components up to the 3rd order are easily distinguishable. The deviation of the Fermi surface from a sphere is studied in detail, and compares nicely with theory based on Linear Muffin Tin Orbital...
متن کاملFermi surface topology of LaFePO and LiFeP.
We perform charge self-consistent density functional theory combined with dynamical mean field theory calculations to study correlation effects on the Fermi surfaces of the iron pnictide superconductors LaFePO and LiFeP. We find a distinctive change in the topology of the Fermi surface in both compounds where a hole pocket with Fe d(z(2)) orbital character changes its geometry from a closed sha...
متن کاملContinuous evolution of the Fermi surface of CeRu2Si2 across the metamagnetic transition.
We present new, high resolution Hall effect and magnetoresistance measurements across the metamagnetic transition in the heavy fermion compound CeRu2Si2 . The results, and ambiguities in the interpretation of de Haas-van Alphen data, force us to rethink the notion that the transition is accompanied by an abrupt f-electron localization. Instead, we explain our data assuming a continuous evolutio...
متن کاملFerromagnetic superconductivity driven by changing Fermi surface topology.
We introduce a simple but powerful zero temperature Stoner model to explain the unusual phase dia-gram of the ferromagnetic superconductor, UGe2. Triplet superconductivity is driven in the ferromagnetic phase by tuning the majority spin Fermi level through one of two peaks in the paramagnetic density of states (DOS). Each peak is associated with a metamagnetic jump in magnetization. The twin-pe...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Physical Society of Japan
سال: 2010
ISSN: 0031-9015,1347-4073
DOI: 10.1143/jpsj.79.024705