Realization of Artificial Ice Systems for Magnetic Vortices in a Superconducting MoGe Thin Film with Patterned Nanostructures

被引：74

作者：

Latimer, M. L. ^{[1
,2
]}

Berdiyorov, G. R. ^{[3
]}

Xiao, Z. L. ^{[1
,2
]}

Peeters, F. M. ^{[3
]}

Kwok, W. K. ^{[1
]}

机构：

[1] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

[2] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA

[3] Univ Antwerp, Dept Fys, B-2020 Antwerp, Belgium

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 06期

关键词：

SPIN-ICE; FRUSTRATION; FERROELECTRICITY; DEFECTS;

D O I：

10.1103/PhysRevLett.111.067001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report an anomalous matching effect in MoGe thin films containing pairs of circular holes arranged in such a way that four of those pairs meet at each vertex point of a square lattice. A remarkably pronounced fractional matching was observed in the magnetic field dependences of both the resistance and the critical current. At the half matching field the critical current can be even higher than that at zero field. This has never been observed before for vortices in superconductors with pinning arrays. Numerical simulations within the nonlinear Ginzburg-Landau theory reveal a square vortex ice configuration in the ground state at the half matching field and demonstrate similar characteristic features in the field dependence of the critical current, confirming the experimental realization of an artificial ice system for vortices for the first time.

引用

页数：5

共 36 条

[1] THE RESONATING VALENCE BOND STATE IN LA2CUO4 AND SUPERCONDUCTIVITY [J].

ANDERSON, PW .

SCIENCE, 1987, 235 (4793) :1196-1198

[2] Noise-enhanced performance of ratchet cellular automata [J].

Babic, D ;

Bechinger, C .

PHYSICAL REVIEW LETTERS, 2005, 94 (14)

[3] COMPOSITE FLUX-LINE LATTICES STABILIZED IN SUPERCONDUCTING FILMS BY A REGULAR ARRAY OF ARTIFICIAL DEFECTS [J].

BAERT, M ;

METLUSHKO, VV ;

JONCKHEERE, R ;

MOSHCHALKOV, VV ;

BRUYNSERAEDE, Y .

PHYSICAL REVIEW LETTERS, 1995, 74 (16) :3269-3272

[4] Vortex configurations and critical parameters in superconducting thin films containing antidot arrays: Nonlinear Ginzburg-Landau theory [J].

Berdiyorov, G. R. ;

Milosevic, M. V. ;

Peeters, F. M. .

PHYSICAL REVIEW B, 2006, 74 (17)

[5] Novel commensurability effects in superconducting films with antidot arrays [J].

Berdiyorov, G. R. ;

Milosevic, M. V. ;

Peeters, F. M. .

PHYSICAL REVIEW LETTERS, 2006, 96 (20)

[6] Large Magnetoresistance Oscillations in Mesoscopic Superconductors due to Current-Excited Moving Vortices [J].

Berdiyorov, G. R. ;

Milosevic, M. V. ;

Latimer, M. L. ;

Xiao, Z. L. ;

Kwok, W. K. ;

Peeters, F. M. .

PHYSICAL REVIEW LETTERS, 2012, 109 (05)

[7] Superconducting films with antidot arrays - Novel behavior of the critical current [J].

Berdiyorov, GR ;

Milosevic, MV ;

Peeters, FM .

EUROPHYSICS LETTERS, 2006, 74 (03) :493-499

[8] Phase behavior of colloidal molecular crystals on triangular light lattices [J].

Brunner, M ;

Bechinger, C .

PHYSICAL REVIEW LETTERS, 2002, 88 (24) :4-248302

[9] Disorder Strength and Field-Driven Ground State Domain Formation in Artificial Spin Ice: Experiment, Simulation, and Theory [J].

Budrikis, Zoe ;

Morgan, J. P. ;

Akerman, J. ;

Stein, A. ;

Politi, Paolo ;

Langridge, S. ;

Marrows, C. H. ;

Stamps, R. L. .

PHYSICAL REVIEW LETTERS, 2012, 109 (03)

[10] Magnetic monopoles in spin ice [J].

Castelnovo, C. ;

Moessner, R. ;

Sondhi, S. L. .

NATURE, 2008, 451 (7174) :42-45

← 1 2 3 4 →