Enhanced spin-ordering temperature in ultrathin FeTe films grown on a topological insulator

Udai Raj Singh; Jonas Warmuth; Anand Kamlapure; Lasse Cornils; Martin Bremholm; Philip Hofmann; Jens Wiebe; Roland Wiesendanger

doi:10.1103/PhysRevB.97.144513

Enhanced spin-ordering temperature in ultrathin FeTe films grown on a topological insulator

Udai Raj Singh
, Jonas Warmuth
, Anand Kamlapure
, Lasse Cornils
, Martin Bremholm
, Philip Hofmann
, Jens Wiebe
, Roland Wiesendanger

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

7 Citationer (Scopus)

Abstract

We studied the temperature dependence of the diagonal double-stripe spin order in 1 and 2 unit cell thick layers of FeTe grown on the topological insulator Bi2Te3 via spin-polarized scanning tunneling microscopy. The spin order persists up to temperatures which are higher than the transition temperature reported for bulk Fe1+yTe with lowest possible excess Fe content y. The enhanced spin order stability is assigned to a strongly decreased y with respect to the lowest values achievable in bulk crystal growth, and effects due to the interface between the FeTe and the topological insulator. The result is relevant for understanding the recent observation of a coexistence of superconducting correlations and spin order in this system.

Originalsprog	Engelsk
Artikelnummer	144513
Tidsskrift	Physical Review B
Vol/bind	97
Nummer	14
Antal sider	6
ISSN	2469-9950
DOI	https://doi.org/10.1103/PhysRevB.97.144513
Status	Udgivet - 20 apr. 2018

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10.1103/PhysRevB.97.144513

https://arxiv.org/ftp/arxiv/papers/1711/1711.10406.pdf

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Citationsformater

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abstract = "We studied the temperature dependence of the diagonal double-stripe spin order in 1 and 2 unit cell thick layers of FeTe grown on the topological insulator Bi2Te3 via spin-polarized scanning tunneling microscopy. The spin order persists up to temperatures which are higher than the transition temperature reported for bulk Fe1+yTe with lowest possible excess Fe content y. The enhanced spin order stability is assigned to a strongly decreased y with respect to the lowest values achievable in bulk crystal growth, and effects due to the interface between the FeTe and the topological insulator. The result is relevant for understanding the recent observation of a coexistence of superconducting correlations and spin order in this system.",

author = "Singh, \{Udai Raj\} and Jonas Warmuth and Anand Kamlapure and Lasse Cornils and Martin Bremholm and Philip Hofmann and Jens Wiebe and Roland Wiesendanger",

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T1 - Enhanced spin-ordering temperature in ultrathin FeTe films grown on a topological insulator

AU - Singh, Udai Raj

AU - Warmuth, Jonas

AU - Kamlapure, Anand

AU - Cornils, Lasse

AU - Bremholm, Martin

AU - Hofmann, Philip

AU - Wiebe, Jens

AU - Wiesendanger, Roland

PY - 2018/4/20

Y1 - 2018/4/20

N2 - We studied the temperature dependence of the diagonal double-stripe spin order in 1 and 2 unit cell thick layers of FeTe grown on the topological insulator Bi2Te3 via spin-polarized scanning tunneling microscopy. The spin order persists up to temperatures which are higher than the transition temperature reported for bulk Fe1+yTe with lowest possible excess Fe content y. The enhanced spin order stability is assigned to a strongly decreased y with respect to the lowest values achievable in bulk crystal growth, and effects due to the interface between the FeTe and the topological insulator. The result is relevant for understanding the recent observation of a coexistence of superconducting correlations and spin order in this system.

AB - We studied the temperature dependence of the diagonal double-stripe spin order in 1 and 2 unit cell thick layers of FeTe grown on the topological insulator Bi2Te3 via spin-polarized scanning tunneling microscopy. The spin order persists up to temperatures which are higher than the transition temperature reported for bulk Fe1+yTe with lowest possible excess Fe content y. The enhanced spin order stability is assigned to a strongly decreased y with respect to the lowest values achievable in bulk crystal growth, and effects due to the interface between the FeTe and the topological insulator. The result is relevant for understanding the recent observation of a coexistence of superconducting correlations and spin order in this system.

UR - https://www.scopus.com/pages/publications/85045885330

U2 - 10.1103/PhysRevB.97.144513

DO - 10.1103/PhysRevB.97.144513

M3 - Journal article

AN - SCOPUS:85045885330

SN - 2469-9950

VL - 97

JO - Physical Review B

JF - Physical Review B

IS - 14

M1 - 144513

ER -

Enhanced spin-ordering temperature in ultrathin FeTe films grown on a topological insulator

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