Complex mixed state of the Pauli-limited superconductor CeCoIn5

被引：7

作者：

Gratens, X. ^{[1
]}

Mendonca-Ferreira, L. ^{[2
,3
]}

Kopelevich, Y. ^{[2
]}

Oliveira, N. F., Jr. ^{[1
]}

Urbano, R. R. ^{[2
,4
]}

Ribeiro, R. A. ^{[2
,3
]}

Movshovich, R. ^{[5
]}

Sarrao, J. L. ^{[5
]}

Thompson, J. D. ^{[5
]}

Fisk, Z. ^{[6
]}

Pagliuso, P. G. ^{[2
,6
]}

机构：

[1] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil

[2] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil

[3] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210170 Sao Paulo, Brazil

[4] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA

[5] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[6] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 05期

基金：

美国国家科学基金会; 巴西圣保罗研究基金会;

关键词：

PARALLEL MAGNETIC-FIELD; TYPE-2; SUPERCONDUCTORS; DIAPHRAGM MAGNETOMETER; FILMS; TRANSITION; ULTRATHIN; VORTICES;

D O I：

10.1103/PhysRevB.85.054502

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetization measurements were performed on CeCoIn5 at temperatures down to 20 mK and magnetic fields up to 17 T applied along different crystallographic orientations. For field configurations nearly parallel to the ab plane (theta less than or similar to 40 degrees and T <= 50 mK), we have found an intriguing vortex dynamics regime revealed by a hysteretic and metastable anomalous peak effect (APE), which gives evidence of surface barrier effects enhanced by antiferromagnetic fluctuations in the mixed state of CeCoIn5. Furthermore, we have observed crossover features in the torque and magnetization traces at fields below H-c2, which are consistent with vortices lattice phase transitions and with the anomalies speculated to be the Fulde-Ferrel-Larkin-Ovchinnikov (FFLO) superconducting state in CeCoIn5. All of the above features were found to be dramatically perturbed in Ce0.98Gd0.02CoIn5.

引用

页数：5

共 5 条

[1] Impurity-induced antiferromagnetic order in Pauli-limited nodal superconductors: Application to heavy-fermion CeCoIn5
Martiny, Johannes H. J.
Gastiasoro, Maria N.
Vekhter, I.
Andersen, Brian M.
PHYSICAL REVIEW B, 2015, 92 (22)
[2] Orientation of the ground-state orbital in CeCoIn5 and CeRhIn5
Sundermann, M.
Amorese, A.
Strigari, F.
Leedahl, B.
Tjeng, L. H.
Haverkort, M. W.
Gretarsson, H.
Yavas, H.
Sala, M. Moretti
Bauer, E. D.
Rosa, P. F. S.
Thompson, J. D.
Severing, A.
PHYSICAL REVIEW B, 2019, 99 (23)
[3] Evolution of ground-state wave function in CeCoIn5 upon Cd or Sn doping
Chen, K.
Strigari, F.
Sundermann, M.
Hu, Z.
Fisk, Z.
Bauer, E. D.
Rosa, P. F. S.
Sarrao, J. L.
Thompson, J. D.
Herrero-Martin, J.
Pellegrin, E.
Betto, D.
Kummer, K.
Tanaka, A.
Wirth, S.
Severing, A.
PHYSICAL REVIEW B, 2018, 97 (04)
[4] Strong Pressure Dependence of the Magnetic Penetration Depth in Single Crystals of the Heavy-Fermion Superconductor CeCoIn5 Studied by Muon Spin Rotation
Howald, L.
Maisuradze, A.
de Reotier, P. Dalmas
Yaouanc, A.
Baines, C.
Lapertot, G.
Mony, K.
Brison, J. -P.
Keller, H.
PHYSICAL REVIEW LETTERS, 2013, 110 (01)
[5] 59Co NMR shift anomalies and spin dynamics in the normal state of superconducting CeCoIn5: Verification of two-dimensional antiferromagnetic spin fluctuations
Sakai, Hironori
Baek, Seung-Ho
Brown, Stuart E.
Ronning, Filip
Bauer, Eric D.
Thompson, Joe D.
PHYSICAL REVIEW B, 2010, 82 (02):

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