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Showing 1 to 7 of 7 entries
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Negative electronic compressibility and tunable spin splitting in WSe2.

Nature nanotechnology

Riley JM, Meevasana W, Bawden L, Asakawa M, Takayama T, Eknapakul T, Kim TK, Hoesch M, Mo SK, Takagi H, Sasagawa T, Bahramy MS, King PD.
PMID: 26389661
Nat Nanotechnol. 2015 Dec;10(12):1043-7. doi: 10.1038/nnano.2015.217. Epub 2015 Sep 21.

Tunable bandgaps, extraordinarily large exciton-binding energies, strong light-matter coupling and a locking of the electron spin with layer and valley pseudospins have established transition-metal dichalcogenides (TMDs) as a unique class of two-dimensional (2D) semiconductors with wide-ranging practical applications. Using...

Ubiquitous formation of bulk Dirac cones and topological surface states from a single orbital manifold in transition-metal dichalcogenides.

Nature materials

Bahramy MS, Clark OJ, Yang BJ, Feng J, Bawden L, Riley JM, Marković I, Mazzola F, Sunko V, Biswas D, Cooil SP, Jorge M, Wells JW, Leandersson M, Balasubramanian T, Fujii J, Vobornik I, Rault JE, Kim TK, Hoesch M, Okawa K, Asakawa M, Sasagawa T, Eknapakul T, Meevasana W, King PDC.
PMID: 29180775
Nat Mater. 2018 Jan;17(1):21-28. doi: 10.1038/nmat5031. Epub 2017 Nov 27.

Transition-metal dichalcogenides (TMDs) are renowned for their rich and varied bulk properties, while their single-layer variants have become one of the most prominent examples of two-dimensional materials beyond graphene. Their disparate ground states largely depend on transition metal d-electron-derived...

Resistive switching in diamondoid thin films.

Scientific reports

Jantayod A, Doonyapisut D, Eknapakul T, Smith MF, Meevasana W.
PMID: 33149239
Sci Rep. 2020 Nov 04;10(1):19009. doi: 10.1038/s41598-020-76093-3.

The electrical transport properties of a thin film of the diamondoid adamantane, deposited on an Au/W substrate, were investigated experimentally. The current I, in applied potential V, from the admantane-thiol/metal heterstructure to a wire lead on its surface exhibited...

Interplay of negative electronic compressibility and capacitance enhancement in lightly-doped metal oxide Bi.

Scientific reports

Nathabumroong S, Eknapakul T, Jaiban P, Yotburut B, Siriroj S, Saisopa T, Mo SK, Supruangnet R, Nakajima H, Yimnirun R, Maensiri S, Meevasana W.
PMID: 32198381
Sci Rep. 2020 Mar 20;10(1):5153. doi: 10.1038/s41598-020-61859-6.

Light-sensitive capacitance variation of Bi

Electronic structure of a quasi-freestanding MoS₂ monolayer.

Nano letters

Eknapakul T, King PD, Asakawa M, Buaphet P, He RH, Mo SK, Takagi H, Shen KM, Baumberger F, Sasagawa T, Jungthawan S, Meevasana W.
PMID: 24552197
Nano Lett. 2014 Mar 12;14(3):1312-6. doi: 10.1021/nl4042824. Epub 2014 Feb 24.

Several transition-metal dichalcogenides exhibit a striking crossover from indirect to direct band gap semiconductors as they are thinned down to a single monolayer. Here, we demonstrate how an electronic structure characteristic of the isolated monolayer can be created at...

Spectral weight reduction of two-dimensional electron gases at oxide surfaces across the ferroelectric transition.

Scientific reports

Jaiban P, Lu MH, Eknapakul T, Chaiyachad S, Yao SH, Pisitpipathsin N, Unruan M, Siriroj S, He RH, Mo SK, Watcharapasorn A, Yimnirun R, Tokura Y, Shen ZX, Hwang HY, Maensiri S, Meevasana W.
PMID: 33033329
Sci Rep. 2020 Oct 08;10(1):16834. doi: 10.1038/s41598-020-73657-1.

The discovery of a two-dimensional electron gas (2DEG) at the [Formula: see text] interface has set a new platform for all-oxide electronics which could potentially exhibit the interplay among charge, spin, orbital, superconductivity, ferromagnetism and ferroelectricity. In this work,...

Subband structure of a two-dimensional electron gas formed at the polar surface of the strong spin-orbit perovskite KTaO3.

Physical review letters

King PD, He RH, Eknapakul T, Buaphet P, Mo SK, Kaneko Y, Harashima S, Hikita Y, Bahramy MS, Bell C, Hussain Z, Tokura Y, Shen ZX, Hwang HY, Baumberger F, Meevasana W.
PMID: 22540511
Phys Rev Lett. 2012 Mar 16;108(11):117602. doi: 10.1103/PhysRevLett.108.117602. Epub 2012 Mar 14.

We demonstrate the formation of a two-dimensional electron gas (2DEG) at the (100) surface of the 5d transition-metal oxide KTaO3. From angle-resolved photoemission, we find that quantum confinement lifts the orbital degeneracy of the bulk band structure and leads...

Showing 1 to 7 of 7 entries