TY - JOUR
T1 - Lifshitz transitions in the ferromagnetic superconductor UCoGe
AU - Bastien, Gaël
AU - Gourgout, Adrien
AU - Aoki, Dai
AU - Pourret, Alexandre
AU - Sheikin, Ilya
AU - Seyfarth, Gabriel
AU - Flouquet, Jacques
AU - Knebel, Georg
N1 - Funding Information:
We thank J.-P. Brison, B. Wu, V.P. Mineev, A.A. Varlamov, and G. Zwicknagl for fruitful discussions. This work has been supported by the ERC grant "NewHeavyFermion," KAKENHI (Grants No. 25247055, No. 15H05884, No. 15H05745, No. 15H05882, No. 15K21732, and No. 16H04006), and the EuromagNET II (EU Contract No. 228043). LNCMI-CNRS is a member of the European Magnetic Field Laboratory (EMFL).
Publisher Copyright:
© 2016 American Physical Society.
PY - 2016/11/9
Y1 - 2016/11/9
N2 - We present high field magnetoresistance, Hall effect and thermopower measurements in the Ising-type ferromagnetic superconductor UCoGe. A magnetic field is applied along the easy magnetization c axis of the orthorhombic crystal. In the different experimental probes, we observed five successive anomalies at H≈4, 9, 12, 16, and 21 T. Magnetic quantum oscillations were detected both in resistivity and thermoelectric power. At most of the anomalies, significant changes of the oscillation frequencies and the effective masses have been observed, indicating successive Fermi surface instabilities induced by the strong magnetic polarization under a magnetic field.
AB - We present high field magnetoresistance, Hall effect and thermopower measurements in the Ising-type ferromagnetic superconductor UCoGe. A magnetic field is applied along the easy magnetization c axis of the orthorhombic crystal. In the different experimental probes, we observed five successive anomalies at H≈4, 9, 12, 16, and 21 T. Magnetic quantum oscillations were detected both in resistivity and thermoelectric power. At most of the anomalies, significant changes of the oscillation frequencies and the effective masses have been observed, indicating successive Fermi surface instabilities induced by the strong magnetic polarization under a magnetic field.
UR - http://www.scopus.com/inward/record.url?scp=84994852214&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84994852214&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.117.206401
DO - 10.1103/PhysRevLett.117.206401
M3 - Article
AN - SCOPUS:84994852214
SN - 0031-9007
VL - 117
JO - Physical Review Letters
JF - Physical Review Letters
IS - 20
M1 - 206401
ER -