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Long-range electronic reconstruction to a dxz,yz-dominated Fermi surface below the LaAlO3/SrTiO3 interface

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Long-range electronic reconstruction to a dxz,yz-dominated Fermi surface below the LaAlO3/SrTiO3 interface
นักวิจัย : Petrović, A. P. , Paré, A. , Paudel, T. R. , Lee, K. , Holmes, S. , Barnes, C. H. W. , David, A. , Wu, T. , Tsymbal, E. Y. , Panagopoulos, C.
คำค้น : DRNTU::Science::Physics
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2557
อ้างอิง : Petrović, A. P., Paré, A., Paudel, T. R., Lee, K., Holmes, S., Barnes, C. H. W., et al. (2014). Long-range electronic reconstruction to a dxz,yz-dominated Fermi surface below the LaAlO3/SrTiO3 interface. Scientific Reports, 4-. , 2045-2322 , http://hdl.handle.net/10220/20281 , http://dx.doi.org/10.1038/srep05338
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Scientific reports
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Low dimensionality, broken symmetry and easily-modulated carrier concentrations provoke novel electronic phase emergence at oxide interfaces. However, the spatial extent of such reconstructions - i.e. the interfacial “depth” - remains unclear. Examining LaAlO3/SrTiO3 heterostructures at previously unexplored carrier densities n2D ≥ 6.9 × 1014 cm−2, we observe a Shubnikov-de Haas effect for small in-plane fields, characteristic of an anisotropic 3D Fermi surface with preferential dxz,yz orbital occupancy extending over at least 100 nm perpendicular to the interface. Quantum oscillations from the 3D Fermi surface of bulk doped SrTiO3 emerge simultaneously at higher n2D. We distinguish three areas in doped perovskite heterostructures: narrow (<20 nm) 2D interfaces housing superconductivity and/or other emergent phases, electronically isotropic regions far (>120 nm) from the interface and new intermediate zones where interfacial proximity renormalises the electronic structure relative to the bulk.

บรรณานุกรม :
Petrović, A. P. , Paré, A. , Paudel, T. R. , Lee, K. , Holmes, S. , Barnes, C. H. W. , David, A. , Wu, T. , Tsymbal, E. Y. , Panagopoulos, C. . (2557). Long-range electronic reconstruction to a dxz,yz-dominated Fermi surface below the LaAlO3/SrTiO3 interface.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Petrović, A. P. , Paré, A. , Paudel, T. R. , Lee, K. , Holmes, S. , Barnes, C. H. W. , David, A. , Wu, T. , Tsymbal, E. Y. , Panagopoulos, C. . 2557. "Long-range electronic reconstruction to a dxz,yz-dominated Fermi surface below the LaAlO3/SrTiO3 interface".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Petrović, A. P. , Paré, A. , Paudel, T. R. , Lee, K. , Holmes, S. , Barnes, C. H. W. , David, A. , Wu, T. , Tsymbal, E. Y. , Panagopoulos, C. . "Long-range electronic reconstruction to a dxz,yz-dominated Fermi surface below the LaAlO3/SrTiO3 interface."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print.
Petrović, A. P. , Paré, A. , Paudel, T. R. , Lee, K. , Holmes, S. , Barnes, C. H. W. , David, A. , Wu, T. , Tsymbal, E. Y. , Panagopoulos, C. . Long-range electronic reconstruction to a dxz,yz-dominated Fermi surface below the LaAlO3/SrTiO3 interface. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.