<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>S</mml:mi></mml:math>-Wave Spin-Triplet Order in Superconductors without Inversion Symmetry:<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>Li</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>Pd</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:mi mathvariant="normal">B</mml:mi></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>Li

Yuan, Huiqiu; Agterberg, D. F.; Hayashi, Nobuhiko; Badica, P.; Vandervelde, D.; Togano, K.; Sigrist, Manfred; Salamon, M. B.

doi:10.1103/physrevlett.97.017006

Cited by 432 publications

(424 citation statements)

References 27 publications

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“…Recent experiment of the penetration depth of Li 2 Pd 3 B and Li 2 Pt 3 B clearly shows the different behavior of the penetration depths, reflecting the difference of the strengths of the RSOC. 18 This implies that spin-orbit coupling enhances the spin-triplet component of noncentrosymmetric superconductors. However, its physical origin has not yet been clarified.…”

mentioning

confidence: 99%

Enhanced triplet superconductivity in noncentrosymmetric systems

2007

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We study pairing symmetry of noncentrosymmetric superconductors based on the extended Hubbard model on square lattice near half-filling, using the random phase approximation. We show that d + f -wave pairing is favored and the triplet f -wave state is enhanced by Rashba type spin-orbit coupling originating from the broken inversion symmetry. The enhanced triplet superconductivity stems from the increase of the effective interaction for the triplet pairing and the reduction of the spin susceptibility caused by the Rashba type spin-orbit coupling which lead to the increase of the triplet component and the destruction of the singlet one, respectively.

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confidence: 99%

Enhanced triplet superconductivity in noncentrosymmetric systems

2007

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“…This behavior can also be obtained directly by substituting eq (2) and (3) into (1) and using ∇ × ∇χ = −2πδ (2) ( ρ)ẑ. We get…”

Section: One Isolated Vortex Linementioning

confidence: 99%

“…The family of Li 2 B(Pd 1−x Pt x ) 3 as well as the compounds CePt 3 Si and CeRhSi 3 are among the major examples. 1, 2,3,4,5,6,7,8,9 The lack of inversion symmetry of background crystal causes an unconventional pairing in the superconducting state and a number of consequences are predicted. 10,11,12,13 It is commonly believed that in the normal state the Fermi surface is split by the spin-orbital coupling as a result of the broken inversion symmetry, and the pairing wavefunction is in a mixture of singlet and triplet pseudospin state.…”

Section: Introductionmentioning

confidence: 99%

Transverse Magnetic Field Distribution in the Vortex State of Noncentrosymmetric Superconductor with O Symmetry

Yip

2009

J Low Temp Phys

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We investigate the magnetic field distribution inside a Type II superconductor which has point group symmetry O such as Li2Pt3B. The absence of inversion symmetry as a departure from perfect cubic group O h causes a magnetization collinear with the phase gradient associated with the order parameter, and a component of current collinear with the local magnetic field. In the vortex state, we predict, by solving the Maxwell equation, a local magnetic field transverse to the vortex lines. The probability distribution of this transverse field is also obtained for the prospective muon-spinrotation measurements.

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“…Here we recover the well-known chiral p x þ ip y pairing 29 in the limit h x ¼ 0. The in-plane Zeeman field here creates an effective s-wave pairing component (although still hosts MFs), and the effective pairing is reminiscent to the (s þ p)-wave pairing in some solid materials 44 .…”

Section: System and Hamiltonianmentioning

confidence: 99%

Topological superfluids with finite-momentum pairing and Majorana fermions

et al. 2013

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Majorana fermions (MFs), quantum particles that are their own antiparticles, are not only of fundamental importance in elementary particle physics and dark matter, but also building blocks for fault-tolerant quantum computation. Recently MFs have been intensively studied in solid state and cold atomic systems. These studies are generally based on superconducting pairing with zero total momentum. On the other hand, finite total momentum Cooper pairings, known as Fulde-Ferrell (FF) Larkin-Ovchinnikov (LO) states, were widely studied in many branches of physics. However, whether FF and LO superconductors can support MFs has not been explored. Here we show that MFs can exist in certain types of gapped FF states, yielding a new quantum matter: topological FF superfluids/superconductors. We demonstrate the existence of such topological FF superfluids and the associated MFs using spin-orbitcoupled degenerate Fermi gases and derive their parameter regions. The implementation of topological FF superconductors in semiconductor/superconductor heterostructures is also discussed.

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S-Wave Spin-Triplet Order in Superconductors without Inversion Symmetry:Li2Pd3BandLi

Cited by 432 publications

References 27 publications

Enhanced triplet superconductivity in noncentrosymmetric systems

Enhanced triplet superconductivity in noncentrosymmetric systems

Transverse Magnetic Field Distribution in the Vortex State of Noncentrosymmetric Superconductor with O Symmetry

Topological superfluids with finite-momentum pairing and Majorana fermions

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